Orion Starblast 6I, Starblast 6 User Manual

Download

INSTRUCTION MANUAL

Orion StarBlast™ 6/6i

IntelliScope Reflector

#10016 / #27191

Providing Exceptional Consumer Optical Products Since 1975

OrionTelescopes.com Customer Support (800) 676-1343 E-mail: support@telescope.com

Corporate Offices (831) 763-7000 89 Hangar Way, Watsonville, CA 95076

IN 377 Rev. D 08/13

Focuser

EZ Finder II reflex sight

Sirius Plössl eyepiece

Navigation knob

Focus wheels

Optical tube assembly

Vertical stop

Carrying handle

Top baseplate

Tube rings

Altitude tensioning knob

Bottom end ring and primary mirror cell

IntelliScope Computerized Object Locator

Eyepiece rack

Carrying handle

Altazimuth base

Bottom baseplate

Figure 1. The StarBlast 6/6i, shown with IntelliScope system installed (#27191)

Congratulations on your purchase of an Orion Star Blast 6/6i IntelliScope Reflector telescope! It is

a versatile and compact astronomical instrument designed to provide wondrous views of celestial objects while offering unprecedented ease of use.

These instructions apply to both the StarBlast 6 (#10016, without IntelliScope Computerized Object Locator) and the StarBlast 6i (#27191), which includes the IntelliScope system. If you purchased the StarBlast 6 (#10016), you may always add the IntelliScope system (#27926) later to enjoy full digital object location capability.

NOTE: The original model of the StarBlast 6 (#9964) is not compatible with the IntelliScope Computerized Object Locator.

If you purchased the #10016 StarBlast 6, you will enjoy breathtaking views of the Moon, planets, and even deep-sky objects like the Orion Nebula. The telescope’s precision Newtonian optics; portable, user-friendly design; and complement of outstanding features and accessories will make stargazing easy and fun for the whole family.

If you purchased the #27191 StarBlast 6i IntelliScope, viewing the night sky will be even easier, as you will have the ability to pinpoint and view thousands of celestial objects with the push of a button. Searching for objects will not be necessary because the IntelliScope’s high-resolution digital encoders will find them for you, in seconds!

Either way, we hope you enjoy your journey through the universe!

These instructions will help you set up and use your StarBlast 6/6i telescope, please read them thoroughly.

WARNING: Never look at the sun with your telescope

(or even with just your eyes) without a professionally made solar filter. Permanent eye damage or blindness could result. Young children should use this telescope only with adult supervision.

Avoid using the type of solar filter that screws into an eyepiece. They are susceptible to cracking under the intense heat that builds up near the focus point, and could cause severe retinal damage. Use only the type of solar filter that covers the front of the telescope. Also, be sure to leave the cover caps on the finder scope when solar observing. Better yet, remove the finder scope altogether when viewing the sun.

Table of Contents

1. Unpacking............................4

2. Parts List.............................4

3. Assembly of #10016 StarBlast 6

(without IntelliScope system)

.................6

4. Assembly of #27191

StarBlast 6i IntelliScope .................6

5. Final Assembly of Your Telescope

(StarBlast 6/6i) .......................11

6. Preparing to Use Your Telescope .........12

7. Observing With Your Telescope ..........13

8. Using the IntelliScope Computerized

Object Locator .......................16

A. Alignment ........................16

B. Overview of the IntelliScope

Computerized Object Locator .........18

C. Locating the Planets ................19

D. Locating Deep-Sky Objects

by Catalog........................20

E. Locating Deep Sky Objects

by Object Type ....................21

F. Locating Stars.....................22

G. Tours of the Best Objects ............23

H. The Identify Function ...............23

I. Adding User-Defined Objects .........24

J. The Function (FCN) Button...........24

K. The “Hidden” Functions .............25

9. Care and Maintenance .................26

10. Specifications of the StarBlast 6/6i ........27

11. Specifications of the IntelliScope System ...27

Appendix A: Collimating the Optics ..........28

Appendix B: Cleaning the Optics ............31

Appendix C: Troubleshooting the

IntelliScope System ...................31

Appendix D: Alignment Star Finder Charts.....34

Appendix E: Constellation Abbreviations ......38

Appendix F: ST Catalog . . . . . . . . . . . . . . . . . . .39

Top of base side panel

Rotate

Telescope mounting bracket

Figure 2. To remove the cardboard insert from atop the altazimuth base, rotate the telescope mounting bracket so its long axis is vertically oriented, then lift the insert off.

1. Unpacking

Carefully unpack the StarBlast 6/6i from its shipping box. We recommend keeping the original shipping box and any smaller accessory boxes contained within it. In the event that the telescope needs to be shipped to another location, or returned to Orion for warranty repair, having the proper shipping containers will help ensure that your telescope will survive the journey intact.

To remove the foam insert from the top of the altazimuth base, rotate the telescope mounting bracket so that its long axis is oriented vertically, then lift the foam insert out of the box (Figure 2).

Make sure all the parts in the Parts List below are present. Be sure to check the boxes carefully, as some parts are small. If anything appears to be missing or broken, immediately call Orion Customer Support (800-676-1343) for assistance.

2. Parts List

Qty. Description

1 Optical tube assembly

1 Altazimuth base

1 Tube rings, pair

1 Optical tube dust cover

1 25mm Sirius Plössl eyepiece,

1 10mm Sirius Plössl eyepiece

1 EZ Finder II reflex sight

1 Collimation cap

1 3-Hole eyepiece rack

1 Hex key, or Allen wrench (size 3/16")

The following parts are packed in small plastic bags inside the main telescope box. They are needed only

for the StarBlast 6i IntelliScope model (#27191), not for the StarBlast 6 (#10016) without IntelliScope. If you purchased the latter, please do not discard these parts! Should you decide at a later date to add the IntelliScope Computerized Object Locator (#27926), you will need these parts. Keep them in a safe place.

1 Azimuth encoder board

1 Azimuth encoder disk

1 Vertical stop L-bracket

1 Vertical stop bolt (with knob)

1 Jam nut for vertical stop bolt

1 Brass azimuth bushing

1 Aluminum spacer ring

3 Machine screws, 5mm (<1/4") long

6 Wood screws, 12mm (~½") long

2 Machine screws, 25mm (~1") long

2 Small hex nuts (for 25mm machine screws)

2 Small flat washers (for 25mm machine screws)

2 Small lock washers (for 25mm machine screws)

Hex lock nut

Fender washer

Vertical side panel

25mm (~1") machine screws

Vertical stop L-bracket

Top baseplate

Azimuth bearing pads (x3)

Washer

Wood screw

Modular jack

Pre-drilled holes

Lock washers

Hex nuts

Wave spring

Azimuth encorder board

Brass azimuth bushing

Azimuth encoder disk

Bottom baseplate

Short azimuth bushing

Fender washer

Azimuth axis bolt

Figure 3. Illustration showing correct placement of the azimuth components of the IntelliScope system on the altazimuth base.

Fender washers

Lock nut

Azimuth axis bolt

Long azimuth bushing

Short azimuth bushing

PTFE/ UHMW bearing ring

Altazimuth encoder jack

Azimuth bolt lock nut

Vertical stop knob

Vertical stop L-bracket

Jam nut

Figure 4. When you disassemble the top and bottom baseplates, you should see all of these parts.

The following parts are included in the small box containing the IntelliScope Computerized Object Locator that

comes with the StarBlast 6i IntelliScope model (#27191) only. They are not included or needed with the standard StarBlast 6 (#10016).

1 Computerized Object Locator

1 Altitude encoder board

1 Encoder connector board

1 Altitude encoder disk

1 Coil cable

1 Altitude encoder cable (shorter)

1 Azimuth encoder cable (longer)

1 Wood screw, ½" long

8 Washers, 5/16" diameter

1 Wave spring

1 Compression spring

4 Cable retaining clips

2 Hook-and-loop strips (1 “hook” strip, 1 “loop” strip)

9-volt battery

3. Assembly of #10016 StarBlast 6 (without IntelliScope system)

The StarBlast 6/6i is partially assembled at the factory, for your convenience. The altazimuth base is fully pre-assembled in the #10016 configuration; that is, it is ready for use without the IntelliScope system. If you purchased the #10016 StarBlast 6, please skip to section 5: “Final Assembly of Your Telescope (StarBlast 6/6i).”

Figure 5. The vertical stop L-bracket and bolt (with knob), shown installed in their correct orientations. The jam (hex) nut on the opposite side of the L-bracket from the knob locks the vertical stop bolt in the desired position.

4. Assembly of #27191 StarBlast 6i IntelliScope

If you purchased the #27191 StarBlast 6i IntelliScope, some assembly is required to install the components of the IntelliScope system on the altazimuth base. In fact, you will first have to disassemble a portion of the base to remove a couple of parts and install others that are necessary for the IntelliScope system of function properly.

Installation of the IntelliScope System on the Altazimuth Base

The assembly requires a small and a medium-sized Phillips screwdriver and two adjustable crescent wrenches. You can substitute a pair of pliers for one of the adjustable crescent wrenches. You will also need a small (4" or so) piece of duct tape, masking tape, or packing tape.

When tightening screws, tighten them until firm, but be careful not to strip the threads by over-tightening.

Begin by placing the pre-assembled altazimuth base on the floor or a table. For steps 1-11, refer to the schematic illustration in Figure 3 for correct placement of components.

1. To prepare the base for the installation of the IntelliScope

system components, you must first disassemble the top baseplate from the bottom baseplate. To do this, use one adjustable crescent wrench or a pair of pliers to hold the hex head of the azimuth axis bolt steady on the underside of the bottom baseplate while using another adjustable crescent wrench to turn the hex lock nut on the other end of the bolt. Remove the lock nut and metal fender washer and set them aside. Now carefully separate the two baseplates. In addition to the azimuth axis bolt and a fender washer on the underside of the

Under side of top baseplate

Pre-drilled starter hole

Wood screw

Center hole

Altazimuth encoder board

Wave spring

Washer

Modular jack

Figure 6. Install the azimuth encoder board on the underside of the top baseplate. Be sure to place one washer on the screw after inserting the screw through its hole in the azimuth board, then thread the screw into the predrilled starter hole.

bottom baseplate, you should also see three white plastic parts: a short azimuth bushing, a long azimuth bushing, and a flat PTFE/UHMW bearing ring (Figure 4). The bushings may have remained lodged in the center hole of the baseplate(s) when you removed it. If that’s the case, use a finger to push the bushing out of the hole. Set the bottom baseplate and associated parts aside for now while you install the vertical stop L-bracket on the top baseplate.

2. Install the vertical stop L-bracket. It will be permanently

installed on the top baseplate (Figure 5). The vertical stop L-bracket will be used before each observing session to set the precise vertical orientation of the optical tube, the procedure for which will be described later. Once installed, the L-bracket will never have to be removed because it does not interfere with the range of motion of the optical tube between vertical and horizontal positions.

To install the vertical stop L-bracket, insert the two 25mm (~1") machine screws through the two holes in the L-bracket’s foot. Then insert the screws into the holes in the top baseplate, with the L-bracket oriented as shown in Figure 5. On the underside of the top baseplate, place a small lock washer on the end of each screw, then thread on a small hex nut. While holding the hex nut stationary with two fingers, tighten the screw with a small Phillips screwdriver. Repeat for the other screw. Now the L-bracket is secured in place.

Note: You may discard the two small flat washers for the 25mm machine screws that were included in the hardware kit; they are not needed.

Under side of top baseplate

Figure 7. Wedge the wave spring between the azimuth encoder board and the baseplate and align the “hole” in the wave spring with the central hole in the baseplate.

3. Thread the vertical stop bolt and knob into the

corresponding hole in the vertical stop bracket, in the orientation show in Figure 5. Thread it though so that 1/2" or so of the bolt emerges on the other side of the L-bracket, then thread on the jam nut. You will adjust the position of the vertical stop bolt and tighten the jam nut later, when initializing the IntelliScope system prior to using it for the first time.

4. Attach the azimuth encoder board to the underside of the

top baseplate (Figure 6). Insert a wood screw through the slot in the azimuth encoder board, then place a washer over the tip of the screw. Now hold the encoder board so that the modular jack and large hole in the encoder board line up with their corresponding holes in the baseplate. Insert the screw tip into the pre-drilled starter hole and screw it in with a Phillips screwdriver until just tight. The screw should not be fully tightened; it should be tight, but not tight enough to prevent the encoder board from moving in its slot.

5. Place the wave spring between the azimuth encoder

board and the bottom of the top baseplate as shown in Figure 7. Position the wave spring so that it aligns precisely with the central hole in the baseplate.

Now that the azimuth encoder is installed on the underside of the top baseplate, be sure not to set the baseplate down on a flat surface, as doing so could damage the encoder. Rather, set the baseplate with attached vertical side panel assembly on its side for now.

6. Place one fender washer on the azimuth axis bolt,

followed by the short nylon bushing. Then insert the bolt through the central hole from the underside of the bottom

Under side of bottom baseplate

Head of azimuth axis bolt (and fender washer)

Tape

Figure 8. Placing a piece of duct, masking, or packing tape over the hex head of the azimuth axis bolt will keep it from dropping downward when you replace the top baseplate onto the bottom baseplate.

baseplate. Make sure the short nylon bushing seats up into the hole.

7. Now temporarily place a piece of duct tape, masking tape, or packing tape over the head of the azimuth axis bolt (Figure 8). This will keep the bolt from sliding down as you install the top baseplate, which you will do in step

10.

8. Place the azimuth encoder disk, flat side down, over the azimuth axis bolt and rest it on the bottom baseplate. Make sure you’ve got the correct encoder disk! The azimuth encoder disk has a smaller center hole than the altitude encoder disk.

9. Place the brass bushing onto the azimuth axis bolt so that the wide end of the bushing is closest to the encoder disk. Seat the bushing onto the encoder disk so that the registration feature on the bushing goes into the hole in the encoder disk. You may need to move the encoder disk around on the azimuth axis bolt a bit for the bushing to seat properly.

Note that for the IntelliScope version (#27191) of this telescope, you will not need the long nylon azimuth bushing and PTFE/UHMW bearing disk that you removed during the baseplate disassembly (Figure 4). Those parts are only utilized for the non-IntelliScope version of the StarBlast 6 (#10016).

10. Carefully position the top baseplate over the bottom baseplate and lower it so the brass bushing goes up into

Figure 9. To reassemble the baseplates, tilt them only slightly, as shown. Do not place them on their side. Use one wrench to hold the azimuth axis bolt head steady while turning the hex lock nut with the other wrench.

the center hole of the top baseplate. Place the remaining fender washer onto the shaft of the azimuth axis bolt, then thread the hex lock nut onto the end of the bolt and tighten it only finger tight, for now. Note that the brass

bushing protrudes slightly above the surface of the top baseplate. This is by design.

11. Tilt the assembled base at a slight angle (as little as possible) and remove the tape from underneath the bottom baseplate. Now, with one wrench (or pliers) hold the head of the azimuth axis screw still while turning the hex lock nut with the other wrench (Figure 9). Tighten the hex lock nut just until the top fender washer is no longer loose, then tighten the hex nut 3/16 to 1/4 turn beyond that. This ensures proper spacing between the encoder disk and the azimuth encoder board.

12. Attach the encoder connector board to the side panel. Place a wood screw into each of the four holes of the connector board and then a washer onto each screw. Sliding the washers all the way down on the screw shaft should help keep the screws from falling out while installing the board. Still, the installation may take a bit of dexterity, so don’t get frustrated if it takes a couple tries. Align the screw tips with the four pre-drilled holes in the side panel so that the modular jack fits into the rectangular cutout. Then thread the screws into the holes with a screwdriver. See Figure 10.

Figure 10. Installing the encoder connector board. There is

a washer on each screw, between the encoder board and the side panel.

13. To attach the altitude encoder board and altitude encoder disk, you must first remove the telescope mounting bracket. Rotate the altitude axis tensioning knob counterclockwise and remove it completely. You’ll see two flat washers and a ball bearing ring remaining on the mounting bracket’s shaft. To remove them you have to rotate the outer washer counterclockwise to “unthread” it from the bolt shaft, then slide the ball bearing ring and inside washer off of the shaft. Now remove the telescope mounting bracket from the side panel.

14. Insert the compression spring into the hole just below the hole for the altitude axis bolt on the inside surface of the side panel. When inserted as far as it will go, the spring will still protrude from the hole by several millimeters (Figure 11).

15. Now you will install the altitude encoder board. Place two wood screws through the mounting holes in the board, and then place two washers over the screw tips as shown in Figure 12a. Thread the screws into the predrilled mounting holes with a Phillips screwdriver until the board is secured, making sure that the large hole in the encoder board is aligned with the hole in the side panel and the board is pressing squarely against the compression spring that you installed in the previous step (Figure 12b). The screws should not be fully tightened; they should be tight, but not tight enough to prevent the altitude encoder from moving up and down within the slots in the encoder board.

Compression spring

Figure 11. Insert the compression spring into the small hole just below the larger hole for the altitude axis bolt.

Altitude encoder board

Washers

Wood screws

Figure 12. (a) Installing the altitude encoder board. Place

a washer on each screw, as shown. (b) The altitude encoder board installed.

Telescope mounting bracket

5mm machine screws

Altitude encoder disk

Aluminum spacer ring

a b

Figure 13. (a) The altitude encoder disk is attached to the telescope mounting bracket with three 5mm machine screws.

The disk fits just inside the Ebony Star bearing ring. (b) The aluminum spacer ring should be installed on the telescope mounting bracket’s shaft (altitude axis bolt) such that the flat side of the ring faces outward.

16. Attach the altitude encoder disk to the telescope mounting bracket with the three 5mm (~1/4") machine screws (Figure 13a). Place the aluminum spacer ring on the telescope mounting bracket shaft with the flat side of the ring facing outward (the opposite side has

Altitude encoder board

an indentation around the hole). See Figure 13b. Then carefully insert the shaft through the hole in the altitude encoder board and then the hole in the side panel. You may have to carefully rotate the shaft back and forth a little to get it through the hole, as it is a tight fit. Slide the inside washer and ball bearing ring (which you removed in step 13) onto the shaft, then “thread on” the outer washer followed by the altitude tensioning knob.

17. Lastly, connect the encoder cables and install the cable

Altitude encoder cable

Cable clips

retaining clips. Refer to Figure 14 for proper placement. Connect one end of the azimuth encoder cable (the longer of the two cables) to the encoder jack in the top baseplate. Connect the other end to the encoder connector board on the side panel. The cable should plug into the jack on the right side of the encoder connector board.

Plug one end of the altitude encoder cable into the modular jack on the altitude encoder board. Connect the

Altitude cable jack

Cable clip

Encoder connector board

Azimuth cable jack

Azimuth encoder cable

other end of the cable to the jack on the left side of the encoder connector board.

Use the provided cable retaining clips to secure the altitude and azimuth cables neatly to the base. We

Azimuth encoder board jack

recommend using one clip for the (shorter) altitude cable, and two clips for the (longer) azimuth cable (Figure 14).

Figure 14. Connect the two encoder cables as shown. The clips have adhesive backing; simply peel the paper off the back of the clip and press the adhesive back to the base where you want the clip to be located.

Tube ring

Telescope mounting bracket

Flat washer

Figure 15. Attaching a tube ring to the telescope mounting bracket.

Lock washer

Socket head cap screw

Hex key

5. Final Assembly of Your Telescope (StarBlast 6/6i)

Now you will complete the assembly of your telescope by installing the tube rings and optical tube assembly on the altazimuth base and attaching the included accessories.

Before getting started, locate the following items:

Qty. Description

1 Optical tube assembly

2 Tube rings

1 Telescope mounting bracket

1 EZ Finder II reflex sight

1 25mm Sirius Plössl eyepiece

1 10mm Sirius Plössl eyepiece

1 Eyepiece rack

2 Socket-head cap screws w/washers

(on tube rings)

Attach the Optical Tube to the Base

To attach the optical tube assembly to the altazimuth base you will first need to equip the telescope mounting bracket with the two tube rings. Rotate the bracket so one of the two through holes in the bracket is accessible (Figure 15). Place a lock washer and then a flat washer onto each of the socket-head cap screws. Then insert the screw into the through hole as shown in Figure 15 and thread it into one of the two tube rings using the included hex key. Do not tighten it all the way; you’ll do that after the telescope tube has been secured in the tube rings. Now rotate the bracket 180° so the other through hole is accessible. Fasten the second tube ring to the bracket with the remaining washer-equipped screw using the hex key. Again, don’t tighten the screw completely yet. Be sure to orient the

Front (open) end of optical tube

Dovetail base

Thumbscrew

Figure 16. Attach the EZ Finder II in its dovetail base in the orientation shown.

tube rings so that the knurled ring clamps are on the same side.

Open the tube rings by loosening the knurled ring clamps. Place the optical tube assembly in the open rings so the front (open) end of the tube points upward. While grasping the optical tube firmly, close the rings around the tube and loosely tighten the knurled ring clamps. Adjust the position of the optical tube in the tube rings so the bottom end of the tube just clears the hardware in the center of the top baseplate.

To view through the StarBlast 6/6i comfortably, you can adjust the orientation of the focuser by rotating the optical tube within the tube rings. Loosen the knurled ring clamps on the tube rings by a few turns. Now, gently rotate the optical tube within the tube rings until the focuser is oriented to your liking. Then tighten the knurled ring clamps to secure the optical tube in that position.

Now that the optical tube is secured tightly in the tube rings, tighten up each of the two socket-head cap screws that fasten the tube rings to the telescope mounting bracket using the hex key.

Install the EZ Finder II Reflex Sight

Slide the foot of the EZ Finder II bracket into the dovetail base that is pre-installed on the optical tube (Figure 16). The EZ Finder II should be oriented as in the figure. Tighten the thumbscrew on the dovetail base to secure the EZ Finder II in place. If it is present, remove the thin plastic battery shield tab

(not shown) from the battery casing prior to use and discard it.

Install the Eyepiece Rack

The eyepiece rack can be installed so that it can be removed, or so it is permanently attached. Place the large portion of the eyepiece rack’s “keyhole” mounting slots over the two preinstalled Phillips head screws on the side of the altazimuth base, then slide the rack downward. If you want to be able to remove the rack for transport or storage of the telescope, be sure the screws are loose enough so you can lift the rack and remove it from the base through the large opening of the “keyhole.” If you wish to permanently attach the rack to the

base, tighten the two screws with a screwdriver until the rack is secured in place.

Insert an Eyepiece

Remove the small cap covering the focuser drawtube and loosen the two eyepiece locking thumbscrews on the drawtube collar. Insert the chrome barrel of the 25mm Sirius Plössl eyepiece into the focuser and secure it with the thumbscrews. You can place the 10mm Sirius Plössl eyepiece in the eyepiece rack for use later.

Congratulations! Your telescope is now fully assembled. Remove the dust cap from the front of the telescope when it is in use. Replace it when you are finished observing.

6. Preparing to Use Your Telescope

This section applies to both the StarBlast 6 (#10016) and Star Blast 6i IntelliScope (#27191).

It’s best to get a feel for the basic functions of the StarBlast 6/6i during the day, before observing astronomical objects at night. This way you won’t have to orient yourself in the dark! Find a spot outdoors where you’ll have plenty of room to move the telescope, and where you’ll have a clear view of some object or vista that is at least 1/4 mile away. It is not critical that the altazimuth base be exactly level (except when initially setting the vertical stop knob position on the StarBlast 6i IntelliScope), but it should be somewhat level to ensure smooth movement.

The StarBlast 6/6i was designed specifically for visual observation of astronomical objects in the night sky. Like all Newtonian reflector telescopes, it is not well suited for daytime terrestrial usage because the image in the eyepiece will be rotated somewhat from the normal, naked-eye view.

Placing the StarBlast 6/6i for Comfortable Viewing

One of the great assets of the StarBlast 6/6i is its extremely portable size. Due to its overall short length, you will find that viewing while sitting next to the telescope is the most comfortable. If you wish to raise the telescope off the ground so that it can be used while standing or sitting in a chair, then a platform, such as a milk crate, sturdy table, or the hood of a car can be used.

Altitude and Azimuth (Aiming the Telescope)

The StarBlast 6/6i’s altazimuth base permits motion along two axes: altitude (up/down) and azimuth (left/right). See Figure

17. Moving the telescope up/down and left/right is the “natural”

way people aim objects, which makes pointing the telescope intuitive and easy.

Simply take hold of the navigation knob and push or pull it to move the telescope and base in the desired direction. Both the altitude and azimuth motions can be made simultaneously and in a continuous manner for easy aiming. This way you can point to any position in the night sky, from horizon to horizon.

Altitude

Azimuth

Figure 17. The StarBlast 6/6i has two axes of motion: altitude (up/down) and azimuth (left/right).

You may find it convenient to hold one hand on one of the carrying handles to help in leveraging the base while moving and aiming the telescope.

When aiming the telescope in altitude, you may find the optical tube assembly is either too hard to move or does not stay in place. Use the altitude tension knob to adjust the friction on the altitude axis until you achieve the desired amount. Ideally, you should adjust the tension on the altitude axis so that the amount of friction roughly matches that of the azimuth axis (which is not adjustable).

Focusing the Telescope

With the 25mm Sirius Plössl eyepiece in the focuser, aim the optical tube so the front (open) end is pointing in the general direction of an object at least 1/4-mile away. With your fingers, slowly rotate one of the focus wheels until the object comes into sharp focus. Go a little bit beyond sharp focus until the image starts to blur again, then reverse the rotation of the knob, just to make sure you’ve hit the exact focus point.

Operating the EZ Finder II Reflex Sight

The EZ Finder II reflex sight (Figure 18) works by projecting a tiny red dot onto a lens mounted in the front of the unit. When you look through the EZ Finder II, the red dot will appear to float in space, helping you locate even the faintest of deep space objects. The red dot is produced by a light-emitting diode (LED), not a laser beam, near the rear of the sight. A replaceable 3-volt lithium battery provides the power for the diode.

To use the EZ Finder II, turn the power knob clockwise until you hear a “click” indicating power has been turned on. With your eye positioned at a comfortable distance, look through the back of the reflex sight with both eyes open to see the red dot. The intensity of the dot can be adjusted by turning the power knob. For best results when stargazing, use the dimmest possible setting that allows you to see the dot without difficulty. Typically, a dim setting is used under dark skies and a bright setting is used under light-polluted skies or in daylight.

Power knob

Altitude adjustment knob

Slot for battery removal

Azimuth adjustment knob

Battery casing

Mounting bracket

Figure 18. The EZ Finder II reflex sight. If it is present, remove the thin plastic battery shield (not shown) from the battery casing prior to use and discard it.

At the end of your observing session, be sure to turn the power knob counterclockwise until it clicks off. When the two white dots on the EZ Finder II’s rail and power knob are lined up, the EZ Finder II is turned off.

Aligning the EZ Finder II

When the EZ Finder II is properly aligned with the telescope, an object that is centered on the EZ Finder II’s red dot should also appear in the center of the field of view of the telescope’s eyepiece. Alignment of the EZ Finder II is easiest to do during daylight, before observing at night. Aim the telescope at a distant object at least 1/4 mile away, such as a telephone pole or chimney and center it in the telescope’s eyepiece. Now, turn the EZ Finder II on and look through it. The object will appear in the field of view near the red dot.

Note: The image in the eyepiece of the StarBlast 6/6i will not be oriented right-side-up, but rather will be upside-down or rotated somewhat from a correctly oriented, naked-eye view. This is normal for Newtonian reflector telescopes.

Without moving the telescope, use the EZ Finder II’s azimuth (left/right) and altitude (up/down) adjustment knobs (Figure

18) to position the red dot on the object in the eyepiece.

When the red dot is centered on the distant object, check to make sure the object is still centered in the telescope’s field of view. If not, recenter it and adjust the EZ Finder II’s alignment again. When the object is centered in the eyepiece and on the red dot, the EZ Finder II is properly aligned with the telescope. Figure 19 simulates the view through the EZ Finder II.

Once aligned, the EZ Finder II will usually hold its alignment even after being removed and remounted. Otherwise, only minimal realignment will be needed.

Replacing the EZ Finder II Battery

Replacement 3-volt lithium batteries for the EZ Finder II are available from many retail outlets. Remove the old battery by inserting a small flat-head screwdriver into the slot on the battery casing (Figure 18) and gently prying open the case. Then

Figure 19. The EZ Finder II superimposes a tiny red dot on the sky, showing right where the telescope is aimed.

carefully pull back on the retaining clip and remove the old battery. Do not over-bend the retaining clip. Slide the new battery under the battery lead with the positive (+) side facing down and replace the battery casing.

7. Observing With Your Telescope

This section applies to both the StarBlast 6 (#10016) and StarBlast 6i IntelliScope (#27191). Specific instructions on how to use the IntelliScope Computerized Object Locator with the StarBlast 6i IntelliScope are provided in the section entitled “Using the IntelliScope Computerized Object Locator.”

Choosing an Observing Site

When selecting a location for observing, get as far away as possible from direct artificial light such as street lights, porch lights, and automobile headlights. The glare from these lights will greatly impair your dark-adapted night vision. Avoid viewing over rooftops and chimneys, as they often have warm air currents rising from them. Similarly, avoid observing from indoors through an open (or closed) window, because the temperature difference between the indoor and outdoor air will cause image blurring and distortion.

If at all possible, escape the light-polluted city sky and head for darker country skies. You’ll be amazed at how many more stars and deep-sky objects are visible in a dark sky!

“Seeing” and Transparency

Atmospheric conditions vary significantly from night to night. “Seeing” refers to the steadiness of the Earth’s atmosphere at a given time. In conditions of poor seeing, atmospheric turbulence causes objects viewed through the telescope to “boil.” If, when you look up at the sky with your naked eyes, the stars are twinkling noticeably, the seeing is bad and you will be limited to viewing with low powers. This is because bad

Figure 20. Megrez connects the Big Dipper’s “handle” to its

“pan.” If you cannot see Megrez, a magnitude 3.4 star, then the viewing conditions are poor.

seeing affects images at high powers more severely. Planetary observing may also be poor.

In conditions of good seeing, star twinkling is minimal and images appear steady in the eyepiece. Seeing is best overhead, worst at the horizon. Also, seeing generally gets better after midnight, when much of the heat absorbed by the Earth during the day has radiated off into space.

Especially important for observing faint objects is good “transparency” – air free of moisture, smoke, and dust. All tend to scatter light, which reduces an object’s brightness. Transparency is judged by the magnitude of the faintest stars you can see with the unaided eye (6th magnitude or fainter is desirable).

If you cannot see stars of magnitude 3.5 or dimmer, then conditions are poor. Magnitude is a measure of how bright a star is: the brighter the star, the lower its magnitude. A good star to remember for this is Megrez (mag. 3.4), which is the star in the “Big Dipper” that connects the “handle” to the “pan” of the dipper (Figure 20). If you cannot see Megrez, then you have fog, haze, clouds, smog, or other conditions (such as light pollution) that are hindering your viewing.

Tracking Celestial Objects

The Earth is constantly rotating about its polar axis, completing one full rotation every 24 hours; this is what defines a “day.” We do not feel the Earth rotating, but we see it at night from the apparent movement of stars from east to west.

When you observe any astronomical object, you are in essence watching a moving target. This means the telescope’s position must be continuously adjusted over time to keep the object in the field of view. This is easy to do with the StarBlast 6/6i because of its smooth motions on both axes. As the object moves off towards the edge of the field of view, just lightly nudge the telescope to re-center it.

Objects appear to move across the field of view faster at higher magnifications. This is because the field of view becomes narrower.

Eyepiece Selection

By using eyepieces of different focal lengths, it is possible to attain many magnifications, or powers, with the StarBlast 6/6i. Your telescope comes with two Sirius Plössl eyepieces of different focal lengths: a 25mm, which provides a magnification of 30x, and a 10mm, which yields 75x. Other eyepieces can be used to achieve higher or lower powers. It is quite common for an observer to own many eyepieces to access a wide range of magnifications.

To calculate the magnification of a telescope-eyepiece combination, simply divide the focal length of the telescope by the focal length of the eyepiece.

Telescope Focal Length (mm)

Eyepiece Focal Length (mm)

For example, the StarBlast 6, which has a focal length of 750mm, used in combination with the 25mm eyepiece, yields a magnification of

750mm

25mm

Whatever you choose to view, always start by inserting your lowest-power (longest focal length) eyepiece to locate and center the object. Low magnification yields a wide field of view, which shows a larger area of sky in the eyepiece. This makes finding and centering an object much easier. Trying to find and center objects with a high-power (narrow field of view) eyepiece is like trying to find a needle in a haystack!

Once you’ve centered the object in the eyepiece, you can switch to a higher magnification (shorter focal length) eyepiece, if you wish. This is recommended for small and bright objects, like planets and double stars. The Moon also takes higher magnifications well.

The best rule of thumb with eyepiece selection is to start with a low-power, wide-field eyepiece, and then work your way up in magnification. If the object looks better, try an even higher magnification eyepiece. If the object looks worse, then back off the magnification a little by using a lower-power eyepiece.

What to Expect

So what will you see with your telescope? You should be able to see bands on Jupiter, the rings of Saturn, craters on the Moon, phases of Venus, and many bright deep-sky objects. Do not expect to see color as you do in NASA photos, since those are taken with long-exposure cameras and have “false color” added. Our eyes are not sensitive enough to see color in faint deep-sky objects, except in a few of the brightest ones.

Remember that you are seeing these objects with your own eyes in real time, using your own telescope! That beats looking at a picture in a book or on a computer screen, in our opinion. Each session with your telescope will be a learning experience. Each time you work with your telescope it will get easier to use, and celestial objects will become easier to find. There is a big difference between looking at a well-made, full-color NASA image of a deep-sky object in a lit room during the daytime, and seeing that same object in your telescope at night.

= Magnification

= 30x

Magnification Limits

Every telescope has a useful magnification limit of about 2X per millimeter of aperture. This comes to 300X for the StarBlast 6. Some telescope manufacturers will use misleading claims of excess magnification, such as “See distant galaxies at 640X!”. While such magnifications are technically possible, the actual image at that magnification would be an indistinct blur.

Moderate magnifications are what give the best views. It is better to view a small, but bright and detailed image than a dim, unclear, oversized image.

One can merely be a pretty image someone gave to you. The other is an experience you will never forget!

Objects to Observe

Now that you are all set up and ready to go, one critical decision must be made: what to look at?

A. The Moon

With its rocky surface, the Moon is one of the easiest and most interesting targets to view with your telescope. Lunar craters, marias, and even mountain ranges can all be clearly seen from a distance of 238,000 miles away! With its ever-changing phases, you’ll get a new view of the Moon every night. The best time to observe our one and only natural satellite is during a partial phase, that is, when the Moon is NOT full. During partial phases, shadows are cast on the surface, which reveal more detail, especially right along the border between the dark and light portions of the disk (called the “terminator”). A full Moon is too bright and devoid of surface shadows to yield a pleasing view. Make sure to observe the Moon when it is well above the horizon to get the sharpest images.

Use an optional Moon filter to dim the Moon when it is very bright. It simply threads onto the bottom of the eyepiece barrels (you must first remove the eyepiece from the focuser to attach a filter). You’ll find that the Moon filter improves viewing comfort, and also helps to bring out subtle features on the lunar surface.

B. The Sun

You can change your nighttime telescope into a daytime Sun viewer by installing an optional full-aperture solar filter over the front opening of the StarBlast 6/6i. The primary attraction is sunspots, which change shape, appearance, and location daily. Sunspots are directly related to magnetic activity in the Sun. Many observers like to make drawings of sunspots to monitor how the Sun is changing from day to day.

Important Note: Do not look at the Sun with any optical instrument without a professionally made solar filter, or permanent eye damage could result.

C. The Planets

The planets don’t stay put like the stars, so to find them you should refer to “This Month’s Sky Summary” in the Learning Center section of our website (telescope.com). Venus, Jupiter, and Saturn are the brightest objects in the sky after the Sun and the Moon. Your StarBlast 6/6i is capable of showing you these planets in some detail. Other planets may be visible but will likely appear star-like. Because planets are quite small in apparent size, optional higher-power eyepieces are recommended and often needed for detailed observations. Not all the planets are generally visible at any one time.

JUPITER: The largest planet, Jupiter, is a great subject for observation. You can see cloud bands on the disk of the giant planet and watch the ever-changing positions of its four largest moons: Io, Callisto, Europa, and Ganymede.

SATURN: The ringed planet is a breathtaking sight when it is well positioned. The tilt angle of the rings varies over a period of many years; sometimes they are seen edge-on, while at other times they are broadside and look like giant “ears” on each side of Saturn’s disk. A steady atmosphere (good seeing) is necessary for a good view. You will probably see a bright “star” close by, which is Saturn’s brightest moon, Titan.

VENUS: At its brightest, Venus is the most luminous object in the sky, excluding the Sun and the Moon. It is so bright that sometimes it is visible to the naked eye during full daylight! Ironically, Venus appears as a thin crescent, not a full disk, when at its peak brightness. Because it is so close to the Sun, it never wanders too far from the morning or evening horizon. No surface markings can be seen on Venus, which is always shrouded in dense clouds.

D. The Stars

Stars will appear like twinkling points of light. Even powerful telescopes cannot magnify stars to appear as more than a point of light. You can, however, enjoy the different colors of the stars and locate many pretty double and multiple stars. The gorgeous two-color double star Albireo in Cygnus is a favorite. Defocusing a star slightly can help bring out its color.

E. Deep-Sky Objects

Under dark skies, you can observe a wealth of fascinating deep-sky objects, including gaseous nebulas, open and globular star clusters, and a variety of different types of galaxies. Most deep-sky objects are very faint, so it is important to find an observing site well away from light pollution. Take plenty of time to let your eyes adjust to the darkness. Do not expect these subjects to appear like the photographs you see in books and magazines; most will look like dim gray smudges. Our eyes are not sensitive enough to see color in deep-sky objects except in a few of the brightest ones. But as you become more experienced and your observing skills get sharper, you will be able to discern more and more subtle details and structure.

To find deep-sky objects in the sky, it is best to consult astronomy software, or a star chart or planisphere. These guides

will help you locate the brightest and best deep-sky objects for viewing with your StarBlast 6/6i. Of course, if you purchased the StarBlast 6i IntelliScope, you will be able to easily locate dozens of deep-sky objects in a given evening with the IntelliScope Computerized Locator!

You can also try low-power scanning of the Milky Way. Use the 25mm eyepiece and just cruise through the “star clouds” of our galaxy. You’ll be amazed at the rich fields of stars and objects you’ll see! The Milky Way is best observed on summer and winter evenings.

8. Using the IntelliScope Computerized Object Locator

This section applies only to the StarBlast 6i IntelliScope (#27191), which comes with the Computerized Object Locator.

Coil cable jack

RS-232 jack

Backlit liquid-crystal display

The IntelliScope Computerized Object Locator (controller) (Figure 21) will provide quick, easy access to thousands of celestial objects for viewing with your telescope.

The controller’s user-friendly keypad combined with its database of more than 14,000 celestial objects put the night sky literally at your fingertips. You just select an object to view, press Enter, then move the telescope manually following the guide arrows on the liquid crystal display (LCD) screen. In seconds, the IntelliScope’s high-resolution, 9,216-step digital encoders pinpoint the object, placing it smack-dab in the telescope’s field of view!

A. Alignment

This section will familiarize you with the alignment procedure for the IntelliScope system.

Powering the Controller

Install the included 9-volt alkaline battery in the battery compartment on the back of the controller. Make sure the positive and negative terminals are oriented as indicated by the labels next to the terminals in the battery compartment. To turn the controller on, firmly press the Power button. The LED lights will activate and the LCD screen will display its introduction message. The intensity of the illumination can be adjusted by repeatedly pressing the Power button. There are five levels of LED brightness. Choose a brightness level that suits your conditions and needs. (Dimmer settings will prolong battery life.)

To turn the controller off, press and hold the Power button for a few seconds, then release it.

To conserve battery life, the controller is programmed to shut itself off after being idle for 50 minutes. So, make sure to press a button at least once every 50 minutes if you do not want the controller to turn off. If the controller does turn off, you will need to perform the initial alignment procedure again.

If the LCD screen and the buttons’ backlighting automatically begin to dim, it’s time to change batteries.

Illuminated pushbuttons

Figure 21. The IntelliScope Computerized Object Locator

Initial Vertical Alignment

After powering up the controller, the top line of the LCD display will read: “POINT VERTICAL.” If the top line reads “ALIGN DEC MARK,” simply press the up arrow button. The top line will now read “POINT VERTICAL”, and you are set to use the object locator with your IntelliScope Dobsonian.

If the vertical stop you installed on the top baseplate during assembly of the telescope is properly adjusted (see below), rotate the optical tube upward until the rear end ring comes in contact with the vertical stop knob, as shown in Figure 22. You may have to raise or lower the tube in the tube rings to achieve contact between the flat portion of the rear end ring and the vertical stop knob. Once the optical tube is in the vertical position, press the Enter button to start the two-star alignment procedure.

Setting the Vertical Stop

For the IntelliScope system to work accurately, the vertical stop must be precisely set so that the optical tube is truly perpendicular to the azimuth axis of the base when the controller says “POINT VERTICAL.” For this you will need a carpenter’s level, which you can find at just about any hardware store.

First, make sure the base itself is level. Place the carpenter’s level on the top baseplate and rotate the base 180˚ in azimuth (Figure 23). The level should indicate that the base is level through the entire rotation. If not, then reposition the base on the ground, or place shims underneath the feet until the base stays level though a 180˚ rotation.

Next, rotate the optical tube upward until the rear end ring comes in contact with the vertical stop knob. Place the carpenter’s level across the top of the optical tube (Figure 24). Is

User-friendly keypad

Rear end ring

Vertical stop knob

Jam nut

Vertical stop L-bracket

Figure 22. Once the vertical stop is adjusted and set initially, pointing the optical tube vertically is as easy as rotating the tube until the bottom end ring contacts the vertical stop knob, as shown. Make sure the middle of the end ring – not the rounded bottom edge – contacts the vertical stop knob.

it level? If so, thread the jam nut tight against the back of the L-bracket to secure the vertical stop knob in that exact position. If the top of the optical tube is not level, thread the vertical stop bolt in or out as needed until the top of the tube is level when the end ring comes in contact with the vertical stop knob. Then secure the vertical stop bolt in place with the jam nut.

Once the vertical stop bolt is accurately adjusted, it should not need adjustment again. The base does not need to be level for the IntelliScope system to function properly; the base only needs leveling when initially setting the vertical stop.

Simple Two-Star Alignment

After setting the vertical position of the optical tube, a simple two-star alignment process is all that is needed to ready the IntelliScope system for operation. This is a great simplification from many other computerized systems, which require you to enter data such as your longitude, latitude, and time zone. For the IntelliScope controller to accurately find objects, you only need to center two bright stars in your telescope and indicate to the controller which two stars you have centered. This is quite easy to do. For your convenience, we have provided finder charts for the alignment stars in Appendix D. Use the finder chart to locate and identify two bright stars in your current night sky. For best results, choose two stars that are at least 60˚ apart from each other. (The width of your fist at arm’s length is about 10˚, so you want the stars to be at least six fistwidths apart.)

So, the optical tube is now in the vertical position and you’ve chosen two bright stars in the sky to use for alignment. The telescope should have a high-power eyepiece, such as the 10mm Sirius Plössl, in the eyepiece holder and the finder scope should be properly aligned with the telescope (these procedures are described elsewhere in this manual). The LCD screen will state on its top line “ALIGN STAR 1,” with the name of a star flashing on the second line.

Figure 23. Place a carpenter’s level on the altazimuth base as shown. Add shims under the three feet as needed so that the base stays level through a 180-degree rotation in azimuth. Once the vertical stop is set, the base does not need to be level to function properly.

Figure 24. Once the base is leveled, point the optical tube up until the mirror cell (bottom end ring) contacts the vertical stop knob. Then place the carpenter’s level across the top of the tube as shown and adjust the vertical stop knob until the tube is level. After each adjustment of the vertical stop knob, make sure to re-establish contact between the telescope end ring and the knob before checking the carpenter’s level.

Use the arrow buttons to scroll through the names of the alignment stars. The up arrow button scrolls through the stars alphabetically from A to Z. The down arrow button scrolls alphabetically backwards, from Z to A. When you arrive at the name of the star you wish to align on, you can begin to move the telescope so that it is pointing at that star (but don’t press the Enter button yet).

Note: The controller will not accept Polaris as the first alignment star. This helps prevent the pointing accuracy from decreasing over time. It is OK to use Polaris as the second alignment star, however.

Take hold of the “navigation knob” on the optical tube and move the telescope so that it is pointing in the general area of the alignment star. Aim the telescope so the alignment star appears in finder scope. Be careful not to confuse the alignment star with other stars in the area when doing this. (It will likely be the brightest star in the field of view.) Now, move the telescope until you have centered the star on the crosshairs of the finder scope. Look into the eyepiece of the telescope, and you should see the alignment star in the field of view of the eyepiece. If it isn’t, then your finder scope is out of alignment with your telescope and will need to be adjusted. Once the alignment star is in the eyepiece’s field of view, center it in the eyepiece as best you can by making small movements to the telescope. (If you have one, an illuminated reticle eyepiece is great for centering alignment stars). Once this is done, press the Enter button on the controller. You have now completed one-half of the two-star alignment.

The LCD screen will now read “ALIGN STAR 2” on the first line with an alignment star’s name flashing on the second line. As before, scroll through the names of the stars with the arrow buttons until you reach your second chosen alignment star. Repeat the procedure described above for your second alignment star. When you have aligned on the second star, press the Enter button. The LCD will then display a number. It is the alignment error factor, or “warp” (W) factor.

The Alignment Error (Warp) Factor

The “warp” alignment error factor essentially lets you know if your alignment was accurate or not. Ideally, this number should be as low as possible, but any “W” of 0.5 or smaller is acceptable (regardless of + or - sign). Warp factors of ±0.3 and ±0.4 are the most common. Warp factors under ±0.2 are typically not achievable (but kudos to you if you get one!). If you complete an alignment and the warp factor is larger than ±0.5 (e.g., +0.6, -0.6, +0.7, -0.7, etc.), then you must turn the controller off (by holding down the Power button) and begin the alignment procedure again. Otherwise, there is no guarantee that the controller will consistently place objects within the field of view of a medium-low power eyepiece.

An unacceptable warp factor may indicate that you aligned on the wrong star or did not have the telescope initially in a precisely vertical position. If you are having problems getting the warp factor at or below ±0.5, see the troubleshooting section in Appendix C.

Your IntelliScope Computerized Object Locator is now ready to find objects. Replace the high-powered eyepiece you used

Figure 25. If you’re positioned to the left of the telescope and face the direction the optical tube is pointed, the guide arrows on the Computerized Object Locator will correspond exactly with the direction you should move the telescope to pinpoint the selected object.

for centering the alignment stars with a low-power, wide-field eyepiece, such as the 25mm Sirius Plössl.

B. Overview of the IntelliScope Computerized Object Locator

The IntelliScope Computerized Object Locator (controller) has been specifically designed for ease of use. This section will help familiarize you with the basic layout and operation of the controller.

Pushbuttons

Besides the Power, Enter, ID, FCN, and up/down arrows, all pushbuttons have letters on them with numbers above them (Figure 21). The letters designate the function of the pushbut- ton. The numbers above them are used for entering numerical data only; the numbers are never active until a function is first chosen. The numbers are arranged like a telephone keypad for ease of number entry. None of the function buttons will work properly until an initial alignment, as outlined previously, is completed. If you press a function button be-fore the twostar alignment is completed, the controller will display “MUST STAR ALIGN.” Turn the unit off, then on again (by using the Power button), to begin the alignment routine again.

The Guide Arrows

The controller leads you to astronomical targets with guide arrows displayed on the LCD screen. After an object is selected to view, you will see two guide arrows, one that points left or right, and one that points up or down. Move the telescope tube in the corresponding direction of the guide arrows. If you are standing to the left of the telescope and facing the same direction the telescope is pointed, the guide arrows will exactly correspond with the direction you should move the telescope (Figure 25). Otherwise, if an up arrow is displayed, move the telescope tube upward, if a down arrow is displayed, move the telescope tube downward, if a left arrow is displayed, rotate the telescope counterclockwise, and if a right arrow is displayed, rotate the telescope clockwise. There is a number next to each guide arrow that indicates how far the telescope needs to be moved to reach the selected object. As you move the telescope toward the object, this number will decrease. When the number goes below ten, the figure will be displayed in tenths; this helps to make small, precise movements to the telescope tube in order to bring the object into your field of view. When both numbers reach zero, stop moving the telescope. The object will be within the field of view of a medium- to low-power eyepiece (25mm focal length or longer).

For example, look at Figure 26a, which shows the LCD screen for someone trying to locate M51, otherwise known as the Whirlpool Galaxy. The first arrow is pointing right and gives a number of 34. The second arrow is pointing up and displays the number 12. This means that the telescope tube should be moved to the right (clockwise) and up. When you are close to

Figure 26. This sequence of pictures illustrate how the Computerized Object Locator’s guide arrows look as you are finding a celestial object. (a) When the optical tube is aimed far away from the object’s location, there will be a number (from 10 to 179) to the left of the guide arrows. (b) When the scope is aimed close to the object, each guide arrow will display a number on its immediate left (from 0 to 9) and immediate right (from 0 to 9); the number on the left is whole number increments, while the number on the right is in increments of tenths. This helps in making small movements to the telescope to pinpoint the object’s location. (c) When the guide arrows display “0.0 0.0”, the object will be within the field of view of the telescope (with a 25mm or longer focal length eyepiece).

M51, the numbers will be displayed in tenths, as is shown in Figure 26b. When the numbers reach zero (Figure 26c), the telescope will be pointed right at the Whirlpool Galaxy.

It is easiest to move the telescope in one direction at a time (say altitude) until the corresponding number reached “0.0”. Then move the scope in the other direction (azimuth) until that number also reads “0.0”.

If the object selected to view is currently located below the horizon, the word “HORIZON” will flash before the guide arrows are displayed. Choose another object to view.

C. Locating the Planets

By far the most popular objects for viewing, after the Moon, are the planets. Since the other eight planets in our solar system are also orbiting the Sun, they do not appear in fixed positions in the night sky like deep-sky objects and stars do. Because of this, the controller requires you to input the date before it can find the planets.

To find planets with your IntelliScope Computerized Object Locator, use the following procedure:

1. Press the Planet button on the controller.

2. The LCD screen will display a date similar to the following:

3. The number after the word “DATE” will be flashing and represents the day of the month. Input the two-digit day using the number buttons.

4. The three-letter month will now be flashing. Use the arrow buttons to scroll to the present month and then press the Enter button.

5. Now the year will flash. Input the year using the number buttons.

If you make a mistake while inputting the date, press the Enter button at any time while still within the Planet button function. The LCD screen will then display the last date input, with the two-digit day after the word “DATE” flashing. Input the correct date as outlined above.

Now, to choose a planet to view, press the arrow buttons and scroll through the planets. The planet’s name will be displayed in the upper left section of the LCD screen, with the guide arrows on the upper right of the LCD screen. Move the telescope in the corresponding direction shown by the guide arrows.

The lower left screen shows the constellation that the planet appears in, with its present co-ordinates given in right ascension and declination. When you are finished viewing the planet, you may scroll to another planet by using the arrow buttons.

The features and details you can see will vary from planet to planet. The following descriptions give a brief overview of what to expect when viewing them:

MERCURY Mercury is often so close to the Sun that it cannot be seen. Sometimes it is visible for a brief period after the Sun sets, and sometimes it’s visible in the morning just before the Sun rises. Mercury does not really show any detail, but is quite bright. With your telescope, you will be able to investigate this

planet’s orange-colored hue. Like Venus, Mercury sometimes appears as a crescent, rather than as a full disk.

VENUS At its brightest, Venus is the most luminous object in the sky, excluding the Sun and the Moon. It is so bright that sometimes it is visible to the naked eye during full daylight! Ironically, Venus appears as a thin crescent, not a full disk, when at its peak brightness. Because it is close to the Sun, it never wanders too far from the morning or evening horizon. No surface markings can be seen on Venus, which is always shrouded in dense clouds.

MARS The Red Planet makes its closest approach to Earth every two years. During close approaches you’ll see a red disk, possibly some light and dark regions, and maybe the polar ice cap. To see surface detail on Mars, you will need a high power eyepiece and very steady air!

JUPITER The largest planet, Jupiter, is a great subject for observation. You can see the disk of the giant planet and watch the ever-changing positions of its four largest moons – Io, Callisto, Europa, and Ganymede. Higher power eyepieces should bring out the cloud bands on the planet’s disk and maybe even the Great Red Spot.

SATURN The ringed planet is a breathtaking sight when it is well positioned. The tilt angle of the rings varies over a period of many years; sometimes they are seen edge-on, while at other times they are broadside and look like giant “ears” on each side of Saturn’s disk. A steady atmosphere (good seeing) is necessary for a good view. You will probably see a bright “star” close by, which is Saturn’s brightest moon, Titan.

URANUS Uranus is a faint planet, and requires high powers (at least 100x) before it starts to show any detail that distinguishes it from stars. Uranus will appear as a pale, blue-green disk.

NEPTUNE Like Uranus, Neptune will require high powers before showing anything to distinguish itself from stars. Neptune will appear as a bluish-colored disk, possibly with a very faint moon nearby if you are using a larger-aperture IntelliScope.

PLUTO Smaller than our own Moon, Pluto is very, very faint and shows little more than a point of light similar to a star. Even the Hubble Space Telescope is unable to show much detail on Pluto. Many amateur astronomers note how Pluto moves with respect to background stars (over several nights) in order to confirm their observation of our most remote planet.

D. Locating Deep-Sky Objects by Catalog

Catalogs are groups of deep sky objects of interest that have been assembled and given designations. Very often a deepsky object will have a catalog number, as well as a “common” name. For example, the Orion Nebula is listed in the Messier catalog as “M42.” The controller has three catalogs built-in: The Messier catalog (M), the New General Catalog (NGC), and the Index Catalog (IC). Many of the objects in the Messier catalog also have NGC catalog designations.

The Messier Catalog

The Messier catalog contains 110 galaxies, nebulas, and star clusters identified by the famous French astronomer Charles

Messier and his colleagues in the late 1700’s. These are some of the most popular celestial attractions observed by amateur astronomers.

To view an object from the Messier catalog, press the M button. Then enter the number of the Messier object you wish to view using the numeric buttons and press the Enter button. For example, to view Messier 57, also known as “the Ring Nebula,” you would press the M button, then press the “5” button, then press the “7” button, followed by the Enter button. If the number of the Messier object you wish to view contains three dig-its, it is not necessary to press Enter after inputting the third digit.

The object’s catalog designation will be shown in the upper left corner of the display screen, with the guide arrows in the upper right. The lower left will display the constellation the object resides in and the object’s common name (if it has one) or a brief description of the object. Move the telescope in the corresponding directions shown by the guide arrows to locate the object.

You can get more information about the selected object by pressing the Enter button. The second line of the LCD display will then cycle information about the object you are viewing such as its celestial coordinates (R.A. and Dec.), magnitude (brightness), size (in arc-minutes or arc-seconds), and a brief scrolling text description.

When you are finished viewing the selected Messier object, you may scroll to another Messier object by using the arrow buttons, or you can select another Messier object to view by pressing the M button again.

The New General Catalog

The New General Catalog, or NGC, is a catalog of some 7,840 deep-sky objects compiled by the Danish astronomer J. L. E. Dreyer more than 100 years ago. It contains hundreds of excellent examples of each type of deep-sky object and is the most well known and used catalog by amateur astronomers beyond the already mentioned Messier catalog. To be more precise, the version of the New General Catalog used in the IntelliScope Computerized Object Locator is an improved version known as the “Revised New General Catalog”; this version has many corrections from Dreyer’s original list.

To view an object from the NGC catalog, press the NGC button. Then enter the number of the NGC object you wish to view using the numeric buttons and press Enter. For example, to view the Andromeda Galaxy, which is listed as NGC224, you would press the NGC button, then the “2” button twice, then the “4” button, followed by the Enter button. If the number of the NGC object you wish to view contains four digits, it is not necessary to press Enter after inputting the fourth digit.

The object’s catalog designation will be shown in the upper left corner of the LCD screen, with the guide arrows in the upper right. The lower left will show the constellation the object resides in, and the object’s common name (if it has one) or a brief description of the object will be shown in the lower right. Move the telescope in the corresponding directions shown by the guide arrows.

You can get more information about the selected object by pressing the Enter button. The second line of the LCD display

will then cycle information about the object you are viewing such as its celestial coordinates (R.A. and Dec.), magnitude (brightness), size (in arc-minutes or arc-seconds), and a brief scrolling text description.

When you are finished viewing the selected NGC object, you may scroll to another NGC object by using the arrow buttons, or you can select another NGC object to view by pressing the NGC button again.

The Index Catalog

The Index Catalog, or IC, contains 5,386 objects discovered in the decade or so after the NGC catalog was first published. This list contains objects similar to the NGC, but IC objects are typically fainter and more difficult to observe.

To view an object from the IC catalog, press the IC button. Then input the number of the IC object you wish to view using the numeric buttons and press the Enter button. For example, to view the Flaming Star Nebula, which is listed as IC405, you would press the IC button, then the “4” button, then the “0” button, then the “5” button, followed by the Enter button. If the number of the IC object you wish to view contains four digits, it is not necessary to press Enter after inputting the fourth digit.

When you are finished viewing the selected IC object, you may scroll to another IC object by using the arrow buttons, or you can select another IC object to view by pressing the IC button again.

E. Locating Deep Sky Objects by Object Type

Rather than trying to select objects by catalog numbers, you may wish to simply view certain types of objects. This is where the Nebula, Galaxy, and Cluster buttons come in handy. These buttons will access a selection of the best and brightest nebulas, galaxies, and star clusters in the night sky.

The Nebula, Cluster and Galaxy buttons are organized by constellation. So, before using these buttons, decide in which constellation you would like to view an object. Choose a constellation that is at least 40˚ high in the sky to get a good view. If you are unsure of the constellations currently visible in your night sky, consult a planisphere or the monthly star chart at www.oriontelescopes.com.

Locating Nebulas

Amongst the most beautiful objects in the night sky, nebulas are clouds of dust and gas that are lit by a nearby stellar source. There are several different types of nebulas; emission

nebulas, which are where star systems form, planetary nebulas, which are the result of a star dying, and reflection nebulas, which are caused by dust reflecting starlight. Most have low surface brightness, so a dark sky free of light-pollution is best for a night of viewing nebulas.

To view a nebula, press the Nebula button on the controller. The LCD screen will then display the word “NEBULA” with a flashing three-letter constellation designation after it. Now, select the constellation in which you would like to view a nebula. Use the arrow buttons to scroll through the list of constellations. If you are unsure which constellation the three-letter designation represents, refer to Appendix E. Once you have selected the constellation, press Enter. A nebula in that constellation will now appear on the LCD screen, along with the guide arrows to lead you to the nebula. The current constellation is shown in the lower left, and the nebula’s proper name or catalog number is in the lower right. For more information about the nebula selected, press the Enter button.

To go to the next nebula in the selected constellation, simply press the up arrow button. The guide arrows will now direct you to the next nebula in the constellation. If there are no more nebulas available in that constellation, a nebula from the next constellation (in alphabetical order) will be displayed. To select another constellation in which to view nebulas, press the Nebula button again.

Locating Star Clusters

Star clusters are just what their name implies; groupings of stars. Star clusters come in two main types, open and globular. Open star clusters reside within our Milky Way galaxy and usually contain a handful of stars clustered together because they were spawned from the same gas cloud. Globular clusters are more like miniature galaxies, with hundreds or thousands of stars packed into a spherical shape by mutual gravity. Globular clusters reside outside the disk of the Milky Way galaxy and orbit the galaxy’s center. It is believed that globular clusters are formed as a natural consequence of galaxy formation. Star clusters, in general, are somewhat bright compared to other deep-sky objects, so many will appear quite spectacular, even in smaller telescopes.

To view a star cluster, press the Cluster button on the controller. The LCD screen will then display the word “STAR CLUSTER” with a flashing three-letter constellation designation after it. Now, select the constellation in which you would like to view a star cluster. Use the arrow buttons to scroll through the list of constellations. If you are unsure which constellation the threeletter designation represents, refer to Appendix E. Once you have selected the constellation, press Enter. A star cluster in that constellation will now appear on the LCD screen, along with the guide arrows to lead you to the star cluster. The current constellation is shown in the lower left, and the star cluster’s proper name or catalog number is in the lower right. For more information about the star cluster selected, press the Enter button.

To go to the next star cluster in the selected constellation, simply press the up arrow button. The guide arrows will now direct you to the next star cluster in the constellation. If there are no more star clusters available in that constellation, a star cluster

from the next constellation (in alphabetical order) will be displayed. To select another constellation in which to view a star cluster, press the Cluster button again.

Locating Galaxies

Nebulas may be beautiful and star clusters impressive, but nothing has quite the breathtaking power of observing a galaxy. Galaxies are collections of billions of stars that come in a variety of shapes and sizes. Viewing a galaxy always gives the observer a revelation of just how vast our universe truly is. Keep in mind, however, that most galaxies are quite faint, and may be challenging to identify, especially in smaller telescopes.

To view a galaxy, press the Galaxy button on the controller. The LCD screen will then display the word “GALAXY” with a flashing three-letter constellation designation after it. Now, select the constellation in which you would like to view a galaxy. Use the arrow buttons to scroll through the list of constellations. If you are unsure which constellation the three-letter designation represents, refer to Appendix E. Once you have selected the constellation, press Enter. A galaxy in that constellation will now appear on the LCD screen, along with the guide arrows to lead you to the galaxy. The current constellation is shown in the lower left, and the galaxy’s proper name or catalog number is in the lower right. If you wish to have more information about the galaxy selected, press the Enter button.

To go to the next galaxy in the selected constellation, simply press the up arrow button. The guide arrows will now direct you to the next galaxy in the constellation. If there are no more galaxies available in that constellation, a galaxy from the next constellation (in alphabetical order) will be displayed. To select another constellation in which to view galaxy, press the Galaxy button again.

F. Locating Stars

The IntelliScope database contains 837 stars. Stars always appear like tiny points of light. Even powerful telescopes cannot magnify a star to appear as more than a point of light! You can, however, enjoy the different colors of the stars and locate many pretty double and multiple stars. You can also monitor variable stars from night to night to see how their brightness changes over time.

To view a star, press the Star button on the controller. The LCD screen will then display the word “STAR” with the word “NAMED” flashing next to it. From this screen, use the arrow buttons to choose from “NAMED,” “DOUBLE,” “VARIABLE,” and “CATALOG.”

Named Stars

The named stars are the brightest in the night sky. These are the stars that the ancients gave proper names to, like “Arcturus” or “Mizar.”

To select a named star, press Enter after selecting “NAMED” from the Star button choices. You can now use the arrow buttons to scroll through the list of named stars. The stars are listed in alphabetical order. Once you have found the named star you would like to observe, the guide arrows will direct you to move the telescope to the star’s position. The upper left corner of the LCD screen will show the named star’s ST

catalog number (the IntelliScope’s entire ST catalog is printed in Appendix F for easy reference), and the lower left shows the constellation in which the star resides. Pressing Enter again will display the star’s R.A. and Dec. coordinates, its magnitude, and a brief description.

To find another named star to observe, simply continue scrolling through the list of named stars.

Double (and Multiple) Stars

Many stars in the night sky appear to be single stars, but they are not. They are actually double or multiple star systems. Some of these systems comprise two or more stars gravitationally bound to each other, while others are just two (or more) stars in the same line of sight. At high magnifications, it is possible to “split” many double (and multiple) stars into their individual components. It can also be interesting to contrast and compare the different colors and magnitudes of the stars in the system. Be aware, however, that good seeing conditions are critical for separating close components of a double or multiple star.

To select a double (or multiple) star to observe, press Enter after selecting “DOUBLE” from the Star button choices. The LCD screen will then display the word “DOUBLE” with a flashing three-letter constellation designation after it. Now, select the constellation in which you would like to view a double star. Use the arrow buttons to scroll through the list of constellations. If you are unsure which constellation the three-letter designation represents, refer to Appendix E. Once you have selected the constellation, press Enter. A double star in that constellation will now appear on the LCD screen, along with the guide arrows to lead you to the double star. The current constellation is shown in the lower left, and the double star’s name is in the lower right.

Note: Double stars typically have names like “Zeta” (Greek letter designation) or a number like “36” (Flamsteed number). The full names for these double stars are actually linked to the constellation they reside in. For example, in the constellation Andromeda, these stars would be “Zeta And” and “36 And.”

For more information about the double star selected, press the Enter button. (The “S=” now refers to the separation, in arc-seconds, between the double stars. For multiple stars, the “S=” refers to the separation between the two brightest stars. The “M=” now refers to the magnitude of the brightest star.) To go to the next double star in the selected constellation, simply press the up arrow button. The guide arrows will now direct you to the next double star in the constellation. If there are no more double stars avail-able in that constellation, a double star from the next constellation (in alphabetical order) will be displayed. To select another constellation in which to view a double star, press the Star button, select “DOUBLE”, and press Enter.

Variable Stars

Variable stars are stars that change their brightness, also called magnitude, over time. The period of brightness change varies greatly from star to star; some variable stars change brightness over several days while others may take several months to noticeably change. It is fun and challenging to watch a star’s magnitude change over time. Observers typically com-

pare the current brightness of the variable star to other stars around it (whose magnitudes are known and do not change over time).

To select a variable star to observe, press Enter after selecting “VARIABLE” from the Star button choices. The LCD screen will then display the word “VARIABLE” with a flashing three-letter constellation designation after it. Now, select the constellation in which you would like to view a variable star. Use the arrow buttons to scroll through the list of constellations. If you are unsure which constellation the three-letter designation represents, refer to Appendix E. Once you have selected the constellation, press Enter. A variable star in that constellation will now appear on the LCD screen, along with the guide arrows to lead you to the variable star. The current constellation is shown in the lower left, and the variable star’s name is in the lower right.

Note: Variable stars typically have names like “Eta” (Greek letter designation) or a letter designation like “R.” The full names for these variable stars are actually linked to the constellation they reside in. For example, in the constellation Aquila, these stars would be “Eta Aql” and “R Aql.”

For more information about the variable star selected, press the Enter button. (The “M=” refers to the mean magnitude of the variable star.) To go to the next variable star in the selected constellation, simply press the up arrow button. The guide arrows will now direct you to the next variable star in the constellation. If there are no more variable stars available in that constellation, a variable star from the next constellation (in alphabetical order) will be displayed. To select another constellation in which to view a variable star, press the Star button, select “VARIABLE,” and press Enter.

Catalog (ST) Stars

The “ST” catalog contains all of the stars in the IntelliScope Computerized Object Locator’s database. This catalog has 837 of the most interesting stars to view in the night sky. The full list of stars appearing in the ST catalog is printed Appendix F. Generally, the best way to use the ST catalog to observe stars is first to peruse Appendix F, and then note the catalog number of the star you wish to observe.

To select an ST catalog star to observe, press Enter after selecting “CATALOG” from the Star button choices. The LCD screen will then display the letter “ST” with three digits blinking after it. Now, input the ST catalog number of the star you wish to observe, and press Enter. If the ST catalog number of the star you wish to view contains three digits, it is not necessary to press Enter after inputting the third digit.

The object’s ST catalog designation will be shown in the upper left corner of the LCD screen, with the guide arrows in the upper right. The lower left will show the constellation the object resides in and the star’s name.

You can get more information on the star selected by pressing the Enter button. The second line of the LCD screen will then cycle information about the object you are viewing, such as its celestial coordinates (R.A. and Dec.), magnitude (brightness), and a brief description.

When you are finished viewing the selected star, you may scroll to another star in the ST catalog by using the arrow buttons, or you can select another ST catalog star to view by pressing the Star button, and pressing Enter once “CATALOG” is selected.

G. Tours of the Best Objects

The IntelliScope controller offers guided tours of the best and brightest celestial objects visible in the sky each month. There are 12 monthly tours, each consisting of 12 preselected objects. The tours are an easy and fun way to locate and observe the finest wonders of the heavens. They are a great place to start for a beginner who is unfamiliar with the night sky, or for a more experienced observer who wants to revisit some old favorites or show friends or family “what’s up” on a given evening.

Starting a Tour

To start an IntelliScope tour, press the Tour button at any time after you have aligned the IntelliScope system. The LCD screen will display “SKY TOUR” and a flashing three-letter designation for the month. Scroll through the months by using the arrow buttons until you reach the present month, then press the Enter button.

The LCD screen will then display the first tour object for the selected month in the lower right of the screen, with the guide arrows in the upper right. Use the guide arrows to point the telescope, and you will soon be observing the first astronomical showpiece of the month.

You can get more information about the current tour object by pressing the Enter button. The second line of the LCD screen will then cycle the following information about the object you are viewing: its celestial co-ordinates (R.A. and Dec.), magnitude (brightness), size (in arc minutes or seconds), and a brief text description.

When you have finished viewing the first tour object for the selected month, you can continue the tour by pressing the up arrow button to find the next object. You can exit the tour at any time by pressing any one of the other function buttons on the controller.

Since several months’ tour objects are visible in the night sky at one time, feel free to select a month before or after the current month. These tour objects will likely be visible also. Remember, however, that viewing objects below 40˚ or so from the horizon will not give the best view due to atmospheric distortion (and usually light pollution). If you are finding that objects in the selected tour month are too close to the horizon, you should choose a month following the selected month, or you can wait a few hours for the objects to rise higher in the sky!

H. The Identify Function

There may come a time in your observations when you spot an unidentified deep-sky object or star in the eyepiece and want to know what it is. With the IntelliScope Computerized Object Locator, a simple press of a button will tell you.

Using the ID Button

When you locate an object and center it in the eyepiece, you can identify it by simply pressing the ID button. The LCD screen

will display “IDENTIFY” with the word “ANY” flashing. You can then use the up/and down arrow buttons to scroll through several more specific options (“STAR”, “DOUBLE”, “CLUSTER”, “NEBULA”, and “GALAXY”). If you know which one of these object types you are looking at, selecting the object type will make the identification quicker and more accurate. This is because the computer will search through a shorter list of potential object matches, and will allow proper identification if there are several objects within the same field of view. If you are unsure of the object type you are looking at, simply select “ANY” from the list of choices. Once you have selected the object type (or “ANY”), press the Enter button.

The identity of the object centered in the eyepiece will now be displayed in the lower right area of the LCD screen. The constellation in which the object resides is shown in the lower left. As always, to get more information about the object, press the Enter but-ton.

An interesting feature of the ID function is that once initiated, it is continually active. So, if you press the ID button, and choose “STAR”, for instance, you can move your telescope from star to star in the sky, and the controller will automatically display the star’s identity when you center the star in the eyepiece. This can be a fun and easy way to identify the stars in the sky. In fact, you can even make a “Name That Star” game out of it! Point your finger at a bright star in the sky and see if you can name it. Then, just point the telescope at the star to see if you were correct or not. If the centered star is not in the controller’s database, it will display the identity of the closest star that is in its database.

To exit the identify function, simply press any other of the controller’s function buttons. If you would like to identify another object type, press the ID button again.

I. Adding User-Defined Objects

Not only does the IntelliScope’s database contain over 14,000 fascinating objects to view, you can even add your own! Up to 99 user-defined objects can be entered into the database by means of the User button. These user-defined objects can be random stars, a faint object not contained in the controller’s database, or just a pretty object that you would like to come back to at some point in the future.

To enter a user-defined object into the database, you must have the right ascension (R.A.) and declination (Dec.) coordinates for the object. If you are currently observing an object that is not in the controller’s database and you wish to add it, but don’t know its coordinates, you can use the FCN button to obtain its coordinates (described in next section).

To input a user-defined object, begin by pressing the User button. The LCD screen will display the word “NEW” with a twodigit number flashing after it. Since no user-defined objects currently exist, press Enter to create user-defined (“NEW”) object number 01. The LCD will display the R.A. and Dec. coordinates for the “NEW” object selected in the lower left. Since no data has been input yet, these coordinates will be 00:00 +00.0. The first four digits indicate the R.A. coordinate (in R.A. hours and minutes), and the remaining digits (and the ± sign) indicate the Dec. coordinate (in degrees). Now, press

the Enter button, and the first two digits of the R.A. coordinate (R.A. hours) will begin flashing. Press the two numerical buttons on the keypad that correspond the hours value of the R.A. coordinate. If the value of the R.A. hours is less than 10, make sure to enter a zero first. Then the second two digits of the R.A. coordinate (R.A. minutes) will begin flashing. Press the two numerical buttons that correspond to the minutes value of the R.A. coordinate. If the R.A. minutes are less than 10, make sure to enter a zero first. Next, the sign of the Dec. coordinate will be flashing. Use the arrow buttons to select “+” or “-”for the Dec. coordinate. Then, the first two digits of the Dec. coordinate will begin flashing. Press the two numerical buttons that correspond to the degrees value of the Dec. coordinate. Then the tenth of a degree value for the Dec coordinate will begin flashing. Press the numerical button that corresponds to the tenths of a degree value for the Dec. coordinate.

You have now input the data for your first user-defined object. Remember that this object is now “NEW01”. If you wish to view this object in the future, press the User button, and press Enter once “NEW01” is selected. The guide arrows will then tell you where to point your telescope to find the user-defined object.

If you wish to input another user-defined object, select “NEW02” (by using numerical buttons or the arrow buttons) after pressing the User button and input the data as out-lined previously. If you select a “NEW” object number that you have already entered coordinates for and attempt to input new data, you will lose the data that was input previously. You may find it convenient to keep a written log of the “NEW” objects so that you can easily keep track of them.

J. The Function (FCN) Button

The IntelliScope Computerized Object Locator has several other useful functions, a couple of which can be accessed by using the FCN (function) button.

R.A. and Dec. Coordinates

By simply pressing the FCN button, the controller will give a continuous readout of the telescope’s current R.A. and Dec. coordinates. This can be helpful and powerful in a number of ways. You can easily find any object in the night sky if you know its right ascension and declination coordinates. Grab any star atlas, choose any object you wish to view, be it faint galaxy or random star, and jot down its coordinates. Then, once you have aligned the IntelliScope system, you can point the telescope to that location by simply pressing the FCN button and moving the telescope until the R.A. and Dec. coordinates displayed match the coordinates of the object you wish to view. You can also press the FCN button at any time to display the current R.A. and Dec. coordinates of whatever you are currently viewing.

A common use for the FCN button is to locate “transient” objects, such as comets and asteroids. To find these objects you will need to learn their coordinates from astronomy resources, such as Astronomy or Sky & Telescope magazines or a reliable astronomy website. Comet and asteroid positions will change from night to night, so entering the current coordinates into the user-defined database is generally not useful.

After pressing the FCN button, the R.A. and Dec. coordinates corresponding to the center of the telescope’s field of view are displayed on the first line of the LCD screen. The lower left of the screen indicates the current constellation the telescope is pointing to. The lower right numbers are the current azimuth (“AZ”) and altitude (“ALT”) coordinates of the telescope; this information is generally not useful.

The Realignment Function

This function is useful for obtaining a new alignment fix during an observing session to correct for small pointing errors. Use this function only when pointing accuracy for a certain area of the sky appears to be poor compared to other areas of the sky. This is evident when objects in one area of the sky consistently fall at the edge or just outside the field of view (of the 25mm eyepiece) when the numbers on the LCD screen read 0.0 0.0. This can happen if the alignment stars initially chosen during setup are somewhat close to each other (less than 60˚ apart) or if the area of sky being viewed is a considerable distance away from the alignment stars chosen.

To improve pointing accuracy in a specific area of the sky, select an object in the controller’s database from that region, and use the guide arrows to find the object. Precisely center the object in the eyepiece (preferably a high-powered one). Now, press the FCN button, and the R.A. and Dec. coordinates of the centered object will be displayed. Then, press the Enter button. The LCD screen will now display “ALIGN OBJECT 3” on the first line, and will be flashing the object currently centered in the telescope on the second line. Pressing Enter again then realigns the IntelliScope system to the object centered in the telescope. The LCD screen will display a new “warp factor” associated with the new alignment. If this number is greater than ±0.5, you may want to consider resetting the controller to perform another two-star alignment. Turn the controller off, then on again (with the Power button), to do this.

If, instead of pressing Enter a second time after pressing the FCN button, you press one of the arrow buttons, the list of initial setup alignment stars will be displayed. If you wish, you can select one of these alignment stars to realign on. Do this by scrolling to the desired alignment star using the arrow buttons, center the star in the telescope, and press Enter.

In general, it will not be necessary to use the realignment function, but it is a handy feature to have at your disposal. Also, be aware that while pointing accuracy will increase in the area of sky around the object realigned on, it may decrease in other areas of the sky.

K. The “Hidden” Functions

All of the active functions of the IntelliScope Computerized Object Locator have been outlined. There are, however, some additional “hidden” functions that may be of some use to you. To access the hidden functions, press the Enter button while pressing the Power button to turn the controller on. The LCD will display its introduction screen (with software version number) and then show the words “ALT AZM TEST.” This is the first hidden function. Scroll to the other hidden functions by using the arrow buttons. The other hidden functions are “ENCODER TEST,” “DOWNLOAD,” “CHECKSUM,” “RE-WRITE,” and

“CLOCK.” When the hidden function you wish to use is displayed, press Enter to select it. To exit the currently chosen hidden function, press any button except for the Enter or arrow buttons. To completely exit the hidden functions section of the controller, you will need to hold the Power button down until the controller turns off.

The rest of this section gives the details and purpose of each hidden function.

Altitude and Azimuth Test

The altitude and azimuth test (“ALT AZM TEST”) is a diagnostic test that gives relative altitude and azimuth positions for the telescope. This test will allow you to easily see if the encoders are “talking” to the controller, and if the encoders are accurately monitoring the telescope’s motions. To effectively use this test, make sure the telescope optical tube is in the horizontal position when pressing the Enter and Power buttons to access the hidden functions.

Once “ALT AZM TEST” is chosen from the hidden function options, the LCD screen will display the telescope’s current relative altitude and azimuth position (in degrees); the relative altitude is in the upper right, while the relative azimuth is in the lower right. To begin with, both of these numbers will be +000.0. The first two sets of numbers on the upper and lower lines of the LCD screen are meaningless for the purposes of this test.

If you move the telescope counterclockwise in azimuth, the number in the lower right should increase, while if you move clockwise in azimuth, the number will decrease. If you rotate the telescope exactly 360˚ in azimuth, the readout should return to the original +000.0 reading.

If you move the telescope upwards in altitude, the number in the upper right should in-crease, while if you move downwards in altitude, the number will decrease. If the telescope tube was perfectly horizontal when you enabled the hidden functions of the controller, then the altitude will read +090.0 when the telescope is pointed precisely vertical.

If one, or both, of the encoders are not behaving properly when performing this diagnostic test, there may be a problem with the assembly of the system, or a problem with one of the encoder boards or discs. Also, be sure to check that all cable connections are secure.

Encoder Test

The encoder test is another diagnostic test that gives information about the performance of the encoders themselves. Select “ENCODER TEST” from the list of hidden functions using the arrow buttons and press Enter.

The LCD screen will now display two lines of data. The top line of data corresponds to the altitude encoder, while the lower line of data corresponds to the azimuth encoder. The first two digits on each line denote the amplitude of the signal from one of the magnetic sensors on the encoder board, the second two digits represent the amplitude from the other sensor on the encoder board. The numbers are in hexadecimal (base 16) digits. Therefore “A” in hexadecimal represents “11” in decimal, “B” represents “12” in decimal, “C” represents “13,” “D” repre-

sents “14,” “E” represents “15,” and “F” represents “16.” When moving the telescope in altitude or azimuth, you will note that each of the digit pairs rises and falls. None of the digit pairs should ever go above “F3.” If they do, then the encoder disk is too close to the sensors on the encoder board. This will generally not happen in altitude, but can happen in azimuth.

If you notice that the first or second digit pair on the second line of the display goes above “F3,” then try loosening the lock nut on the azimuth nut of the base by about 1/16 turn. If this does not work, you will need to disassemble the azimuth encoder (azimuth encoder disk, brass bushing, and azimuth encoder board) and reassemble it carefully according to the assembly instructions.

If you notice that the two digit pairs on the first line are going above “F3,” then there is a problem with your altitude encoder assembly. More than likely, the altitude encoder disk is bent.

The three-digit number displayed after the digit pairs on each line is the “radius” for each encoder. This number should not go above about 125 or below about 30. If it does, performance may be compromised for the corresponding encoder. If the number goes above 125, then the encoder disk and magnet may be too close to each other. If the number goes below 30, then the encoder disk and magnet may be too far away from each other. Also, if the radius varies by more than 30 counts in a cycle, encoder performance may not be optimal, and you should contact Orion Technical Support.

The four-digit number at the end of each line is the raw encoder “ticks” in hexadecimal numbers. This information will generally not be useful for diagnostic testing of the encoders.

Download

This function allows downloading of software changes and upgrades available from Orion’s website. To use this option, you must have the optional IntelliScope-to-PC cable, available from Orion. Check www.oriontelescopes.com for more information about available software downloads for the IntelliScope Computerized Object Locator.

Checksum

The checksum function is used to make sure that software has loaded into the controller properly. It has no purpose until a new software version is downloaded. Check the IntelliScope

download section on www.telescope.com to see what the proper checksum should be for each new software version.

Rewrite

Rewrite is also only used after a new software version has been downloaded. It rewrites the new software into its memory in order to prevent any potential problems from arising after the software transfer.

Clock

This function allows use of the IntelliScope system with equatorial platforms for Dobsonian telescopes. If you are using your IntelliScope with a Dobsonian equatorial platform, press Enter when the selection “CLOCK” is displayed from the available “hidden” function choices. The LCD screen will then show the word “ON” blinking. For normal operation of the IntelliScope system, the controller’s internal clock should be on. For use with a Dobsonian equatorial platform, use the up or down arrow button to change “ON” to “OFF,” and press Enter. The controller is now ready to be used with a Dobsonian equatorial platform. Now, when you press Power to turn the controller on, the LCD screen will state “CLOCK IS OFF” on the second line of its introduction screen.

To turn the controller’s internal clock back on, access the hidden functions, select “CLOCK,” press Enter, change the “OFF” back to “ON,” and press Enter again.

9. Care and Maintenance

If you give your telescope reasonable care, it will last a lifetime. Store it in a clean, dry, dust-free place, safe from rapid temperature changes and humidity. Do not store the telescope outdoors, although storage in a garage or shed is OK. Small components like eyepieces and filters should be kept in a protective box or storage case. Keep the dust caps on the front of the telescope and on the focuser when it is not in use.

The telescope requires very little mechanical maintenance. The optical tube is made of steel and has a smooth painted finish that is fairly scratch resistant. If a scratch does appear on the tube, it will not harm the telescope. Smudges on the tube can be wiped off with a soft cloth and a household cleaner.

Refer to Appendix B for detailed instructions on how to clean the optics of the StarBlast 6/6i.

10. Specifications of the

StarBlast 6/6i

Primary mirror diameter: 150mm

Primary mirror: Parabolic

Secondary mirror minor axis: 47.0mm

Focal length: 750mm

Focal Ratio: f/5.0

Mirror Coatings: Aluminum with SiO2 overcoat

Focuser: Rack-and-pinion, accepts 1.25"

eyepieces

Eyepieces: 25mm and 10mm Sirius Plössl,

1.25"

Magnification: 30x (with 25mm eyepiece), 75x

(with 10mm eyepiece)

Finder: EZ Finder II reflex sight

Weight: 23 lbs., 8 oz.

Tube Length: 28 inches

Figure 27. Collimating the optics. (a) When the mirrors are properly aligned, the view down the focuser drawtube should look like this. (b) With the collimation cap in place, if the optics are out of alignment, the view might look something like this. (c) Here, the secondary mirror is centered under the focuser, but it needs to be adjusted (tilted) so that the entire primary mirror is visible. (d) The secondary mirror is correctly aligned, but the primary mirror still needs adjustment. When the primary mirror is correctly aligned, the center “dot” of the collimation cap will be centered, as in (e).

11. Specifications of the IntelliScope System

Objects in database:

• 110Messier(M)objects

• 7840NewGeneralCatalog(NGC)objects

• 5386IndexCatalog(IC)objects

• 8Majorplanets

• 99User-definedobjects

Computer interface: RS-232 port

Power: Requires one 9V battery

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes of modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee

Figure 28. The quick collimation cap, which features an inner reflective surface, helps in centering reflections of the optics in the focuser during the collimation process.

that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorientorrelocatethereceivingantenna.

• Increasetheseparationbetweentheequipmentand

receiver.

• Connecttheequipmentintoanoutputonacircuitdifferent

from that to which the receiver is connected.

• Consultthedealeroranexperiencedradio/TVtechnician

for help.

Spider vane thumb nuts

Figure 29. To center the secondary mirror under the focuser, hold the secondary mirror holder in place with your fingers while adjusting the center screw with a Phillips head screwdriver. Do not touch the mirror’s surface.

• Ashieldedcablemustbeusedwhenconnectinga

peripheral to the serial ports.

Appendix A: Collimating the Optics

Collimating is the process of adjusting the mirrors so they are aligned with one another. Your telescope’s optics were aligned at the factory, and should not need much adjustment unless the telescope was handled roughly in transit. Accurate mirror alignment is important to ensure the peak performance of your telescope, so it should be checked regularly. Collimating is a relatively easy process and can be done in daylight or darkness.

To check collimation, remove the eyepiece and look down the focuser drawtube. You should see the secondary mirror centered in the drawtube, as well as the reflection of the primary mirror centered in the secondary mirror, and the reflection of the secondary mirror (and your eye) centered in the reflection of the primary mirror, as in Figure 27a. If anything is off-center, proceed with the following collimating procedure.

The Collimation Cap

Your StarBlast 6/6i comes with a “quick collimation cap” (Figure 28). This is a simple cap that fits on the focuser draw- tube like a dust cap, but has a tiny hole in the center and a reflective inner surface. The collimation cap helps center your eye over the focuser drawtube so that aligning the optical components is easier to achieve. The reflective surface provides a distinct visual reference that is helpful in centering the mirror reflections. Figures 27b through 27e assume that you have the collimation cap in place.

The Primary Mirror Center Mark

You’ll notice that the primary mirror of the StarBlast 6/6i has a tiny ring (sticker) marking its center. This “center mark” allows you to achieve a very precise collimation; you don’t have to guess where the exact center of the mirror is.

Figure 30. To center the secondary mirror radially in the focuser drawtube, make adjustments to the two knurled spider vane thumbnuts that are perpendicular to the focuser.

NOTE: The center ring sticker need not ever be removed from the primary mirror. Because it lies directly in the shadow of the secondary mirror, its presence in no way adversely affects the optical performance of the telescope or the image quality. That might seem counterintuitive, but it’s true!

Preparing the Telescope for Collimating

Once you get the hang of collimating, you will be able to do it quickly even in the dark. For now, it is best to collimate in daylight, preferably in a brightly lit room and aimed at a white wall. It is recommended that the telescope tube be oriented horizontally. This will prevent any parts from the secondary mirror from falling down onto the primary mirror and causing damage if something comes loose while you are making adjustments. Place a sheet of white paper inside the optical tube directly opposite the focuser. The paper will provide a bright “background” when viewing into the focuser.

Aligning the Secondary Mirror

To adjust the secondary mirror collimation, you will need a Phillips screwdriver and a 2mm hex key, or Allen wrench.

You will need to check, and adjust if necessary, four aspects of the secondary mirror’s alignment:

1. The secondary mirror’s axial position

2. The secondary mirror’s radial position

3. The secondary mirror’s rotational position

4. The secondary mirror’s tilt

The first three will probably only need to be checked and (possibly) adjusted once. Thereafter, it is usually only the secondary mirror’s tilt that will need to be adjusted occasionally.

Adjusting the Secondary Mirror’s Axial Position

With the collimating cap in place, look through the hole in the cap at the secondary (diagonal) mirror. Ignore the reflections for the time being. The secondary mirror itself should be centered in the focuser drawtube. If it is off-center along the axis of

Figure 31. The collimation and mirror locking thumbscrews

Figure 32. A star test will determine if the telescope’s

optics are properly collimated. An unfocused view of a bright star through the eyepiece should appear as illustrated on the right if optics are perfectly collimated. If the circle is unsymmetrical, as illustrated on the left, the scope needs collimation.

the telescope, i.e., positioned too far toward the front opening or toward the rear of the telescope, as it is in Figure 27b, you will have to adjust the mirror’s axial position.

To do so, use the 2mm hex key to loosen the three small alignment set screws in the center hub of the 4-vane spider several turns. Now, grasp the mirror holder (the cylinder that is attached to the back of the secondary mirror itself) with one hand while turning the center screw with a Phillips head screwdriver with your other hand (Figure 29). Turning the screw clockwise will move the secondary mirror toward the front opening of the optical tube, while turning the screw counterclockwise will move the secondary mirror toward the primary mirror. When the secondary mirror is centered axially in the focuser drawtube, rotate the secondary mirror holder until the reflection of the primary mirror is as centered in the secondary mirror as possible. It may not be perfectly centered, but that is fine for now. Then, tighten the three small alignment set screws equally to secure the secondary mirror in that position.

Adjusting the Secondary Mirror’s Radial Position

Like the axial position, the secondary mirror’s radial position was set at the factory and will probably not need any adjusting, or if it does, you’ll typically need to do it only once.

By “radial position” we mean the position of the secondary mirror along the axis perpendicular to the focuser drawtube, as shown in Figure 30. This position is changed by adjusting two of the spider vane thumb nuts, as shown. Loosen one thumb nut, then tighten the opposite one until the secondary mirror is centered radially in the drawtube. Do not loosen the thumb nuts too much, to avoid having them completely unthread from the ends of the spider vanes. Also, when making this adjustment, be careful not to stress the spider vanes or they could bend.

Adjusting the Secondary Mirror’s Rotational Position

The secondary mirror should face the focuser squarely. If the mirror appears to be rotated away from the focuser, the mirror’s rotational position will need to be adjusted. Again, this adjustment will rarely, if ever, need to be done.

Grip the sides of the secondary mirror holder with your fingers. Then, using a Phillips screwdriver, loosen the center screw in the secondary mirror holder about a quarter of a turn only (counterclockwise). That should be enough to free up the secondary mirror to rotate slightly in either direction. Look into the collimation cap and rotate the mirror slightly in each direction to get an idea of how it affects the view of the secondary mirror. Now rotate the mirror as needed so that it precisely faces the focuser. Hold the mirror holder stationary in that position while turning the center screw clockwise until it is just tight (do not over-tighten). Sometimes the mirror may rotate slightly when tightening the screw, so keep at it until the mirror faces the focuser squarely and is secured in place.

Adjusting the Secondary Mirror’s Tilt

Finally, the tilt of the secondary mirror may occasionally require adjustment. If the entire primary mirror reflection is not visible in the secondary mirror when using the collimation cap, as in Figure 27c, you will need to adjust the tilt of the secondary mirror. Using a 2mm hex key, first loosen one of the three alignment set screws by, say, one full turn, and then tighten the other two to take up the slack. Do not loosen the center screw during this process. The goal is to center the primary mirror reflection in the secondary mirror, as in Figure 27d. When it is centered, you’re done adjusting the secondary mirror. Don’t worry that the reflection of the secondary mirror (the dark circle with the four spider vanes adjoining it) is off-center, since that adjustment is made when aligning the primary mirror in the next step.

Aligning the Primary Mirror

The final collimation adjustment is made to the primary mirror. It will need adjustment if, as in Figure 27d, the secondary mirror is centered under the focuser and the reflection of the primary mirror is centered in the secondary mirror, but the reflection of the secondary mirror (dark circle containing the light reflective surface and center black “dot” of the collimation cap) is off-center.

The tilt of the primary mirror is adjusted with three springloaded collimation thumbscrews on the back end of the optical

tube (bottom of the primary mirror cell); these are the wide thumbscrews (Figure 31). The other three thin thumbscrews lock the mirror’s position in place; these thin thumbscrews must be loosened before any collimation adjustments can be made to the primary mirror.

To start, turn the thin thumbscrews that lock the primary mirror in place counterclockwise a few turns each.

Now, while looking into the focuser through the collimation cap, turn one of the wide collimation thumbscrews a half turn or so in either direction and see if the secondary mirror reflection moves closer to the center of the primary. That is, does the “dot” of the collimation cap appear to move closer to the ring on the center of the primary mirror? If it does, great, keep going until you get it as close as you can. If it doesn’t, try turning the collimation thumbscrew in the opposite direction. If turning the one collimation thumbscrew does not seem to bring the dot closer to the ring, try using one of the other collimation thumbscrews. It will take some trial-and-error using all three collimation thumbscrews to properly align the primary mirror. Over time you will get the feel for which collimation screws to turn to move the image in a given direction.

When you have the dot centered as much as possible in the ring, your primary mirror is collimated. Now lightly tighten the three thin locking thumbscrews to secure the primary mirror in place.

The view through the collimation cap should now resemble Figure 27e. A simple star test will indicate how well the telescope optics are collimated.

Star-Testing the Telescope

When it is dark, point the telescope at a bright star and accurately center it in the eyepiece’s field of view. Slowly de-focus the image with the focusing knob. If the telescope is correctly collimated, the expanding disk should be a perfect circle (Figure 32). If the image is unsymmetrical, the scope is out of collimation. The dark shadow cast by the secondary mirror should appear in the very center of the out-of-focus circle, like the hole in a donut. If the “hole” appears off-center, the telescope is out of collimation.

If you try the star test and the bright star you have selected is not accurately centered in the eyepiece, the optics will always appear out of collimation, even though they may be perfectly aligned. It is critical to keep the star centered, so over time you will need to make slight corrections to the telescope’s position in order to account for the sky’s apparent motion. Point the telescope at Polaris (the north star) if you do not have a mount that tracks.

Appendix B: Cleaning the Optics

Cleaning Lenses

Any quality optical lens cleaning tissue and optical lens cleaning fluid specifically designed for multi-coated optics can be used to clean the exposed lenses of your eyepieces. Never

use regular glass cleaner or cleaning fluid designed for eyeglasses.

Before cleaning with fluid and tissue, blow any loose particles off the lens with a blower bulb or compressed air. Then apply some cleaning fluid to a tissue, never directly on the optics. Wipe the lens gently in a circular motion, then remove any excess fluid with a fresh lens tissue. Oily fingerprints and smudges may be removed using this method. Use caution; rubbing too hard may scratch the lens. On larger lenses, clean only a small area at a time, using a fresh lens tissue on each area. Never reuse tissues.

Cleaning the Mirrors

In general, your telescope’s mirrors will only need to be cleaned very infrequently, if ever. Covering the front opening of the telescope with the dust cover when it is not in use will prevent dust from accumulating on the mirrors. Keeping the dust cap on the focuser’s 1.25" opening is also a good idea. Improper cleaning can scratch the mirror coatings, so the fewer times you have to clean the mirrors, the better. Small specks of dust or flecks of paint have virtually no effect on the visual or imaging performance of the telescope.

The large primary mirror and the elliptical secondary mirror of your telescope are front-surface aluminized and over-coated with hard silicon dioxide, which prevents the aluminum from oxidizing. These coatings normally last through many years of use before requiring re-coating.

To clean the secondary mirror, it must be removed from the telescope. Do this by holding the secondary mirror holder stationary with your fingers (don’t touch the mirror itself) while unthreading the Phillips head screw in the center hub of the 4-vane spider. Completely unthread the screw from the holder, and the holder will come loose in your fingers. Be careful not to lose the spring on the Phillips head screw.

Handle the mirror and its holder carefully. You do not need to remove the secondary mirror from its holder for cleaning. Follow the same procedure described below for cleaning the primary mirror.

To clean the primary mirror, carefully remove the mirror cell from the telescope. To do this, you must remove the four screws that connect the mirror cell to the steel tube. These screws are located on the outer edge of the mirror cell. Then pull the cell away from the tube. You will notice the primary mirror is held in the mirror cell with three clips, each held by two mirror clip anchor screws. Using a Phillips screwdriver, unthread the mirror clip anchor screws and remove the clips.

Next, hold the mirror by its edge, and remove it from the mirror cell. Be careful not to touch the aluminized surface of the mirror with your fingers. Set the mirror on a clean, soft towel. Fill a clean sink, free of abrasive cleanser, with room-temperature water, a few drops of liquid dishwashing detergent, and if possible, a cap-full of rubbing alcohol. Submerge the mirror (aluminized face up) in the water and let it soak for several minutes (or hours if it is a very dirty mirror). Wipe the mirror underwater with clean cotton balls, using extremely light pressure and stroking in straight lines across the surface. Use one ball for each wipe across the mirror. Then rinse the mirror under a

stream of lukewarm water. Any particles on the surface can be swabbed gently with a series of clean cotton balls, each used just one time.

Dry the mirror in a stream of air (a “blower bulb” works great), or remove any stray drops of water with the corner of a paper towel. Dry the bottom and the edges with a towel (not the mirror surface!). Leave the entire assembly in a warm area until it is completely dry before replacing it in the mirror cell. Then reinstall the mirror cell in the telescope optical tube with the four screws.

Appendix C: Troubleshooting the IntelliScope System

This section is intended to help you if you are encountering any problems with your IntelliScope system. If this information is not useful to you in determining the source of the problem, contact Orion Technical Support by email at support@telescope.com, or call (800) 676-1343.

Check the Azimuth Encoder and Encoder Board

1. Is the azimuth axis screw’s hex lock nut tight enough?

Is it too tight? Remember, it should be tightened 3/16 to 1/4 turn past when the fender washer is no longer loose under the nut.

2. Does the brass bushing extend slightly above the top

surface of the top baseplate? If not, the bushing or top baseplate may need replacement, or there may be an assembly problem.

3. Is the azimuth encoder disk bent? If so, you will need to flatten it by bending.

4. Is the brass bushing properly registered with the azimuth encoder disk? The feature on the wide end of the bushing needs to seat into the hole in the disk.

Check the Altitude Encoder and Encoder Board

5. Did you install the altitude encoder disk onto the telescope mounting bracket with the three small machine screws? If you didn’t and the disk is free to rotate on the mounting bracket shaft, the IntelliScope system will not work.

6. Did you install the aluminum spacer ring on the telescope mounting bracket shaft after you attached the encoder disk? The spacer ring is important for maintaining the correct spacing between the altitude encoder disk and the sensors on the encoder board.

7. Is the compression spring seated in its hole just below the hole for the telescope mounting bracket shaft? Does it make contact with the altitude encoder board when the board is in place? This is also important for maintaining the correct spacing between the altitude encoder disk and the sensors on the encoder board.

Warp factor consistently above ±0.5 but below ±2.0

8. Check accuracy of vertical stop. Use a carpenter’s level to do this.

9. Are alignment stars being centered with reasonable precision? A high-power eyepiece (at least 10mm focal length), or an illuminated reticle eyepiece (preferred) is recommended.

10. Check encoders as outlined previously.

11. Try to use alignment stars that are well above the horizon. Light from stars is refracted as it travels through the atmosphere and starlight near the horizon has to travel through the greatest amount of atmosphere before reaching your telescope. Stars near the horizon can appear as much as 2° away from their actual position.

12. Avoid long delays between aligning on the first and second alignment stars. The stars in the night sky appear to move due to the rotation of the Earth. If you take more than a few minutes to align on the second star, this stellar motion will result in an increase in the warp factor (and decrease the resultant pointing accuracy). This is because the controller does not yet have a frame of reference to tell which way the stars should appear to be moving before the second star is aligned on.

Warp numbers larger than 2.0

13. Are the stars you aligned on actually the stars you selected on the controller? Consult the finder charts in Appendix D if you are unsure.

14. The encoder sensors may be coming into contact with the encoder disks. Check both the altitude and azimuth encoders as outlined above.

Altitude readouts do not change when you move the scope (during “ALT AZM TEST”)

15. Check the altitude cable’s connections.

16. Make sure the altitude tension knob is not too loose.

Azimuth readouts do not change when you move the scope (during “ALT AZM TEST”)

17. Check the azimuth cable’s connections.

18. Make sure the hex lock nut on the azimuth axis screw is tight. The fender washer underneath the hex lock nut should not be able to move. Remember, the hex lock nut should be tightened about 3/16 to 1/4 turn beyond the point where the washer cannot move any longer.

19. Try disassembling then reassembling the azimuth encoder by disassembling the top and bottom baseplates.

Appendix D: Alignment Star Finder Charts

EAST

NORTH

Deneb

Vega

LYRA

Rasalhague

Keystone

Arcturus

COMA

BERENICES

Denebola

Big Dipper

Mirfak

LEO

Regulus

LYNX

WEST

VIRGO

LIBRA

Spica

VELA

PUPPIS

Sirius

SOUTH

SPRING

Early March 1:00 AM Late March 12:00 AM Early April 12:00 AM* Late April 11:00 PM* Early May 10:00 PM* Late May 9:00 PM* Early June 8:00 PM (dusk)*

*Daylight saving time

NORTH

EAST

Mirfak

LYNX

Great Square of Pegasus

G N

Altair

Deneb

Albireo

Teapot

Vega

LYRA

Keystone

Pointers

Big Dipper

LEO

WEST

VIRGO

Spica

Antares

LUPUS

Alpheratz

SOUTH

SUMMER

Early June 2:00 AM* Late June 1:00 AM* Early July 12:00 AM* Late July 11:00 PM* Early August 10:00 PM* Late August 9:00 PM* Early September 8:00 PM (dusk)*

*Daylight saving time

EAST

NORTH

Pointers

LYNX

Great Square

of Pegasus

ORION

Hyades

FORNAX

CETUS

Algol

Big Dipper

Keystone

GRUS

Vega

Rosalhague

LYRA

Altair

AQUILA

WEST

SERPENS

CAUDA

SCUTUM

SOUTH

AUTUMN

Early September 2:00 AM* Late September 1:00 AM* Early October 12:00 AM* Late October 11:00 PM* Early November 9:00 PM Late November 8:00 PM Early December 7:00 PM

*Daylight saving time

EAST

VIRGO

NORTH

VENATICI

CANES

LEO

Big Dipper

Regulus

LYNX

Sirius

Algol

Hyades

Rigel

Great Square of Pegasus

C S

I P

WEST

Mira

CETUS

VELA

PUPPIS

Adhara

FORNAX

SOUTH

WINTER

Early December 2:00 AM Late December 1:00 AM Early January 12:00 AM Late January 11:00 PM Early February 10:00 PM Late February 9:00 PM Early March 8:00 PM

Appendix E: Constellation Abbreviations

And Andromeda

Ant Antlia

Aps Apus

Aql Aquila

Aqr Aquarius

Ara Ara

Ari Aries

Aur Auriga

Boo Boötes

Cae Caelum

Cam Camelopardalis

Cap Capricorn

Car Carina

Cas Cassiopeia

Cen Centaurus

Cep Cepheus

Cet Cetus

CVn Canes Venatici

Cyg Cygnus

Del Delphinus

Dor Dorado

Dra Draco

Equ Equuleus

Eri Eridanus

For Fornax

Gem Gemini

Gru Grus

Her Hercules

Hor Horologium

Hya Hydra

Hyi Hydrus

Ind Indus

Lac Lacerta

Leo Leo

Ori Orion

Pav Pavo

Peg Pegasus

Per Perseus

Phe Phoenix

Pic Pictor

PsA Piscis Austrinus

Psc Pisces

Pup Puppis

Pyx Pyxis

Ret Reticulum

Scl Sculptor

Sco Scorpius

Sct Scutum

Ser Serpens

Sex Sextans

Sge Sagitta

Cha Chamaeleon

Cir Circinus

Cnc Cancer

CMa Canis Major

CMi Canis Minor

Col Columba

Com Coma Berenices

CrA Corona

Australis

CrB Corona Borealis

Crt Crater

Cru Crux

Crv Corvus

Lep Lepus

Lib Libra

LMi Leo Minor

Lup Lupus

Lyn Lynx

Lyr Lyra

Men Mensa

Mic Microscopium

Mon Monoceros

Mus Musca

Nor Norma

Oct Octans

Oph Ophiuchus

Sgr Sagittarius

Tau Taurus

Tel Telescopium

TrA Triangulm

Australe

Tri Triangulum

Tuc Tucana

UMa Ursa Major

UMi Ursa Minor

Vel Vela

Vir Virgo

Vol Volans

Vul Vulpecula

Appendix F: ST Catalog

Number Name Other RA Dec Mag Sep Con Code

ST001 O∑∑ 254 00 01.2 +60 21 7.6 59" Cas 5 colored double star

ST002 30 00 02.0 -06.0 4.4 * Psc 1 red variable star

ST003 ∑3053 00 02.6 +66 06 5.9 15" Cas 5 colored double star

ST004 SU 00 04.6 +43.5 8 * And 1 red variable star

ST005 Ced214 00 04.7 +6 7. 2 7. 8 30’ Cep 130 emission nebula

ST006 ∑3062 ADS 61 00 06.3 +58.4 6.4 1.5" Cas 4 double star challenge

ST007 Alpheratz Alpha 00 08.4 +29 05 2.1 * And 21 star

ST008 ∑2 ADS 102 00 09.3 +79.7 6.6 0.8" Cep 4 double star challenge

ST009 Kappa ß 391 00 09.4 -28 00 6.2 2" Scl 4 double star challenge

ST010 Algenib Gamma 00 13.2 +15.2 2.8 * Peg 21 star

ST 011 AD ADS 180 00 14.5 -07.8 4.9 1.5° Cet 1 red variable star

ST012 7 00 14.6 -18.9 4.4 * Cet 1 red variable star

ST013 ∑12 “35, UU” 00 15.0 +08 49 5.8 12 " Psc 5 colored double star

ST014 S 00 15.4 - 3 2.1 5.5 * Scl 22 variable star

ST015 ∑13 00 16.2 +76.9 7 0.9" Cep 4 double star challenge

ST016 ST 0 0 17.6 +50.3 9 * Cas 1 red variable star

ST017 Groombridge34 ADS 246 00 18 .1 +44.0 8 39" And 2 double star

ST018 ∑24 00 18.5 +26 08 7.6 5" And 2 double star

ST019 Iota 00 19.4 -08.8 3.5 * Cet 21 star

ST020 VX 00 19.9 +4 4.7 8 * And 21 star

ST021 R 00 24.0 +38 35 5.8 Stellar And 22 variable star

ST022 ∑30 0 0 2 7. 2 +49 59 6.9 15" Cas 2 double star

ST023 AQ 0 0 2 7. 6 +35.6 6.9 * And 1 red variable star

ST024 Beta Lacaille

119

ST025 ∑36 ADS 449 00 32.4 +06.9 5.7 28" Psc 2 double star

ST026 Zeta 17 0 0 3 7. 0 +53.9 3.7 * Cas 21 star

ST027 Delta 00 39.3 +30.9 3.3 * And 21 star

ST028 55 00 39.9 +21 26 5.4 6" Psc 5 colored double star

ST029 Schedar Alpha 00 40.5 +56.5 2.2 * Cas 21 star

ST030 O∑18 ADS 588 00 42.4 +04.2 7.8 1.5" Psc 4 double star challenge

ST031 HN122 ADS 624 00 45.7 +75.0 5.7 36" Cas 2 double star

ST032 Delta 00 48.7 + 0 7. 6 4.4 * Psc 21 star

ST033 Eta 00 49.1 +57 49 3.4 12" Cas 5 colored double star

ST034 65 ADS 683 00 49.9 + 2 7.7 6.3 4.4" Psc 5 colored double star

ST035 Do13 00 50.0 +64.1 11 13’ Cas 120 scattered group of stars

ST036 Lambda1 Dunlop 2 00 52.4 -69.5 6.5 21" Tu c 2 double star

ST037 36 ADS 755 00 55.0 +23.6 6 0.8" And 4 double star challenge

ST038 Navi “Gamma,

Tsih”

00 31.5 -63.0 4.4 27" Tuc 2 double star

00 56.7 +60.7 2.5 * Cas 21 star

Number Name Other RA Dec Mag Sep Con Code

ST039 ∑80 00 59.4 +00 47 8.4 26" Cet 3 double star equal magni-

tude

ST040 ∑79 0 1 00.1 +44 43 6 8" And 3 double star equal

magnitude

ST041 U 01 02.3 +81 51 6.8 Stellar Cep 22 variable star

ST042 ∑88 74 01 05.6 +21 28 5.3 30" Psc 3 double star equal

magnitude

ST043 ∑90 77 01 05.8 +04 55 6.8 33" Psc 2 double star

ST044 Zeta Rumker 2 01 08.4 -55.3 3.9 6.4" Phe 2 double star

ST045 Eta 01 08.6 -10. 2 3.5 * Cet 21 star

ST046 Lux Lydiae SAO 181 01 08.7 +86.3 4.3 * Cep 21 star

ST047 Mirach Beta 01 09.7 +35.6 2 * And 21 star

ST048 Zeta ADS 996 01 13.7 +07. 6 5.6 23" Psc 2 double star

ST049 Kappa h3423 01 15.8 -68.9 5.1 5.4" Tuc 2 double star

ST050 Z 01 16. 2 +25.8 8.8 * Psc 21 star

ST051 ∑113 42 01 19.8 -00 31 6.4 1.6" Cet 4 double star challenge

ST052 Psi ADS 1129 01 25.9 +68.1 4.7 25" Cas 9 double star magnitude

contrast

ST053 R 01 2 7. 0 -32.5 6.1 * Scl 22 variable star

ST054 Gamma 01 28.4 -43.3 3.4 4’ Phe 21 star

ST055 Achernar Alpha 0 1 3 7. 7 -57 14 0.5 * Eri 21 star

ST056 51 01 38.0 +48.6 3.6 * And 21 star

ST057 UV 01 38.8 -18.0 7 * Cet 22 variable star

ST058 p Dunlop 5 01 39.8 -56.2 5.8 11.5" Eri 2 double star

ST059 Nu 106 01 41.4 +05.5 4.4 * Psc 21 star

ST060 44 Burnham

1103

ST061 Phi 01 43.7 +50.7 4 .1 * Per 21 star

ST062 ∑162 01 49.3 +47 54 5.8 2" Per 8 triple star challenge

ST063 ∑174 1 01 5 0.1 +22.3 6 2.6" Ari 2 double star

ST064 ∑163 01 51.3 +64 51 6.6 35" Cas 5 colored double star

ST065 Baten Kaitos Zeta 01 51.5 -10 .3 3.7 3’ Cet 2 double star

ST066 ∑178 01 52.0 +10 48 8.5 3" Ari 3 double star equal

ST067 ∑180 Gamma 01 53.5 +19.3 4.5 8" Ari 3 double star equal

ST068 Psi 01 53.6 -46.3 4.4 5° Phe 1 red variable star

ST069 Epsilon 45 01 54.4 +63.7 3.4 * Cas 21 star

ST070 ∑18 6 ADS 15 38 01 55.9 +01.9 6.8 1" Cet 4 double star challenge

ST071 56 ADS 1534 01 56.2 +3 7. 3 5.7 3’ And 2 double star

ST072 Lambda ADS 1563 01 57.9 +23.6 4.8 37" Ari 2 double star

ST073 Upsilon 02 00.0 -21.1 4 * Cet 21 star

01 43.3 +60.6 5.8 1.6 " Cas 2 double star

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST0 74 ∑202 Alpha 02 02.0 +02.8 4 1.6" Psc 4 double star challenge

ST075 Almach Gamma 02 03.9 +42.3 2.2 10" And 5 colored double star

ST076 Hamal Alpha 0 2 0 7.2 +23.5 2 * Ari 21 star

ST077 59 02 10.9 +39 02 5.6 16" And 5 colored double star

ST078 Iota A DS 1697 0 2 12.4 +30.3 5 3.8" Tri 5 colored double star

ST079 ∑231 66 02 12.8 -02.4 5.7 16.5" Cet 2 double star

ST080 ∑228 ADS 1709 02 14.0 + 47. 5 6.6 1.1" And 4 double star challenge

ST081 ∑232 02 14.7 +30 24 8 7" Tri 3 double star equal

magnitude

ST082 ∑239 02 17.4 +28 44 7 14" Tr i 2 double star

ST083 Mira Omicron 02 19.3 -03.0 2 * Cet 22 variable star

ST084 Iota 02 2 9.1 + 6 7.4 4 2.2" Cas 6 triple star

ST085 ∑268 02 29.4 +55 31 6.9 3" Per 2 double star

ST086 ∑274 02 31.5 +01 05 7. 3 14" Cet 3 double star equal

magnitude

ST087 Polaris Alpha 02 31.8 +89 16 2 18" UMi 2 double star

ST088 Omega h 3506 02 33.9 -28 13 5 11" For 2 double star

ST089 30 02 3 7. 0 +24 38 6.5 39" Ari 5 colored double star

ST090 R R TRI 02 3 7. 0 +34.3 5.4 * Tri 22 variable star

ST091 ∑299 Gamma 02 43.3 +03.2 3.6 2.7" Cet 2 double star

ST092 ∑305 02 47.5 +19 22 7.4 3" Ari 4 double star challenge

ST093 RZ 02 48.9 +69 38 6.2 Stellar Cas 22 variable star

ST094 pi 02 49.3 +17 28 5.2 3" Ari 6 triple star

ST095 ∑307 Eta 02 50.7 +55 53 3.9 28" Per 9 double star magnitude

contrast

ST096 R 02 53.9 -49.9 4.7 * Hor 22 variable star

ST097 ∑330 ADS 2237 02 57. 2 -00.6 7.3 9" Cet 2 double star

ST098 Acamar Theta 02 58.3 -40.3 3.5 8" Eri 2 double star

ST099 ∑333 Epsilon 02 59.2 +29.3 4.6 1.4 " Ari 4 double star challenge

ST100 Epsilon 02 59.2 +21 20 4.6 1" Ari 4 double star challenge

ST101 ∑331 03 00.8 +52 20 5.4 12" Per 2 double star

ST102 Menkar Alpha 03 02.3 +0 4.1 2.5 * Cet 21 star

ST103 Rho 25 03 05.2 +38.8 3.4 * Per 1 red variable star

ST104 ∑320 03 06.2 +79 24 5.8 5" Cep 5 colored double star

ST105 h3568 03 0 7. 5 -79.0 5.6 15" Hyi 2 double star

ST106 Algol Beta 03 08.2 +41.0 2.2 * Per 22 variable star

ST107 Alpha ADS 2402 03 12.1 -29.0 4 5" For 2 double star

ST108 h3556 03 12.4 -44.4 6 3.5" Eri 2 double star

ST109 ∑362 03 16.3 +60 02 8.5 7" Cam 3 double star equal

magnitude

ST 110 ∑369 03 17. 2 +40 29 6.7 3" Per 5 colored double star

ST 111 ADS2446 03 17. 7 +38.6 7.8 0.9" Per 4 double star challenge

Number Name Other RA Dec Mag Sep Con Code

ST 112 Zeta 03 18.2 -62.5 5.2 5" Ret 2 double star

ST 113 Tau4 ADS 2472 03 19.5 -21.8 3.7 * Eri 21 star

ST 114 Toms Top a z SAO

75871

ST 115 Mirfak Alpha 03 24.3 +49 52 1.8 * Per 21 star

ST 116 Y 03 2 7.7 +44.2 8.1 * Per 22 variable star

ST 117 ∑394 03 28.0 +20 27 7.1 7" Ari 2 double star

ST 118 ∑385 ADS 2544 03 29.1 +59.9 4.2 2.4" Cam 2 double star

ST 119 ∑389 03 3 0.1 +59 21 6.5 2.7" Cam 2 double star

ST120 Sigma 03 30.6 +48.0 4.4 * Per 21 star

ST121 ∑401 03 31.3 +27 34 6.4 11" Tau 3 double star equal

ST122 Epsilon 03 32.9 -09.5 3.7 * Eri 21 star

ST123 ∑400 AD S 2 612 03 35.0 +60.0 6.8 1.4" Cam 2 double star

ST124 O∑36 ADS 2650 03 40.0 +63.9 6.8 46" Cam 2 double star

ST125 U1 03 41.6 +62.6 8 .1 Cam 22 variable star

ST126 Omicron ADS 2726 03 44.3 +32.3 3.8 Per 21 star

ST127 Pi 26 03 4 6.1 -12.1 4.4 * Eri 1 red variable star

ST128 Gamma 0 3 4 7. 2 -74.2 3.2 * Hyi 21 star

ST129 ∑52 30 03 48.3 +11.2 5 9" Tau 2 double star

ST130 F ∆ 16 03 48.6 -37 37 4.9 8" Eri 3 double star equal

ST131 BE SAO

12916

ST132 Atik Zeta 03 5 4 .1 +31.9 2.9 * Per 21 star

ST133 32 ADS 2850 03 54.3 -03.0 5 7" Eri 5 colored double star

ST134 Epsilon 0 3 5 7. 9 +40 01 2.9 9" Per 9 double star magnitude

ST135 Zaurak Gamma 03 58.0 -13. 5 3 * Eri 21 star

ST136 Lambda 35 04 00.7 +12.5 3.3 * Tau 22 variable star

ST137 O∑531 ADS 2995 0 4 0 7. 6 +38.1 7.4 1.4" Per 4 double star challenge

ST138 ∑485 SZ 04 07.8 +62 20 7 90" Cam 2 double star

ST139 Omicron2 40 04 15.2 - 07. 7 4.5 83" Eri 8 triple star challenge

ST140 Epsilon 04 16.5 -59.3 4.4 * Ret 21 star

ST141 Theta Rumker 3 04 17. 7 -63.3 6.2 4" Ret 2 double star

ST142 Phi ADS 3137 04 20.4 +27.4 5 52" Tau 2 double star

ST143 T 04 22.0 +19 32 8.4 Stellar Tau 22 variable star

ST144 ∑528 Chi 04 22.6 +25.6 5.5 19.4" Tau 2 double star

ST145 ADS3169 04 22.7 +15.1 7. 3 1.4" Tau 4 double star challenge

ST146 43 Upsilon3 04 24.0 -34.0 4 * Eri 1 red variable star

ST147 ß 184 0 4 2 7. 9 -21 30 7. 3 1.7 " Eri 4 double star challenge

03 20.3 +29.0 4.5 9° Ari 21 star

magnitude

03 49.5 +65.5 4.5 * Cam 21 star

contrast

Number Name Other RA Dec Mag Sep Con Code

ST148 ∑552 04 31.4 +40 01 7 9" Per 3 double star equal

magnitude

ST149 1 04 32.0 +53 55 5.4 10" Cam 5 colored double star

ST150 ∑559 04 33.5 +18 01 6.9 3" Tau 3 double star equal

magnitude

ST151 46 ADS 3305 04 33.9 -06.7 5.7 4’ Eri 2 double star

ST152 Aldebaran Alpha 04 35.9 +16. 5 0.9 30" Tau 5 colored double star

ST153 Nu 48 04 36.3 -03.4 3.9 11° Eri 21 star

ST154 53 04 38.2 -14. 3 3.9 * Eri 21 star

ST155 ∑572 04 38.5 +26 56 7. 3 4" Tau 3 double star equal

magnitude

ST156 54 04 40.4 -19.7 4.3 * Eri 1 red variable star

ST157 R 04 40.5 -38.2 6.7 * Cae 22 variable star

ST158 ∑590 55 04 43.6 -08 48 6.7 9" Eri 3 double star equal

magnitude

ST159 Iota Dunlop 18 04 50.9 -53.5 5.6 12" Pic 2 double star

ST160 ST RV 04 51.2 +68 10 9.2 Stellar Cam 1 red variable star

ST161 Pi4 3 04 51.2 +05.6 3.7 * Ori 21 star

ST162 TT 04 51.6 +28.5 8 * Tau 22 variable star

ST163 Pi5 8 04 54.2 +02.4 3.7 * Ori 21 star

ST164 Omicron2 9 04 56.4 +13. 5 4.1 * Ori 21 star

ST165 Iota 04 57.0 +33.2 2.7 * Aur 21 star

ST166 Pi6 10 04 58.5 +01.7 4.5 * Ori 21 star

ST167 Omega ADS 3572 04 59.3 +37.9 5 5.4" Aur 2 double star

ST168 Hinds Crimson

Star

ST169 ∑627 05 00.6 +03 36 6.6 21" Ori 3 double star equal

ST170 ∑631 ADS 3606 05 00.7 -13.5 7.5 5.5" Lep 2 double star

ST171 ∑630 ADS 3623 05 02.0 +01.6 6.5 15" Ori 2 double star

ST172 Epsilon 05 02.0 +43 49 2.9 Stellar Aur 22 variable star

ST173 Zeta 8 05 02.5 +41.1 3.8 * Aur 21 star

ST174 W 05 05.4 +01. 2 8.6 * Ori 22 variable star

ST175 Epsilon 05 05.5 -22.4 3.2 * Lep 21 star

ST176 Eta 10 05 06.5 +41.2 3.2 * Aur 21 star

ST177 O∑98 14 0 5 0 7. 9 +08 29 5.9 0.7" Ori 4 double star challenge

ST178 TX 0 5 09.1 +39.0 8.5 * Aur 22 variable star

ST179 SY 05 09.8 -05.6 9 * Eri 22 variable star

ST180 ∑644 05 10.4 +37 17 6.8 2" Aur 4 double star challenge

ST181 ∑655 Iota 05 12.3 -11.9 4.5 13" Lep 2 double star

ST182 Rho 05 13.3 +02 52 4.5 7" Ori 5 colored double star

R 04 59.6 -14.8 5.9 * Lep 22 variable star

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST183 Rigel Beta ORI 0 5 14.5 -08.2 0 9.4" Ori 9 double star magnitude

contrast

ST184 ∑653 14 05 15.4 +32.7 5 .1 11" Aur 6 triple star

ST185 Capella Alpha 05 16.7 +46 00 0.1 * Aur 21 star

ST186 S 476 05 19.3 -18 30 6.2 39" Lep 3 double star equal

magnitude

ST187 h3750 05 20.5 -21 14 4.7 4" Lep 9 double star magnitude

contrast

ST188 UV 05 21.8 +32.5 7. 4 * Aur 22 variable star

ST189 ADS3954 ADS 3954 05 21.8 -24.8 5.5 3.2" Lep 2 double star

ST190 ∑696 ADS 3962 05 22.8 +03.6 5 32" Ori 2 double star

ST191 ∑701 ADS 3978 05 23.3 -08.4 6 6" Ori 2 double star

ST192 Eta 05 24.5 -02 24 3.4 1.5" Ori 4 double star challenge

ST193 Sigma ADS 3984 05 24.7 + 37. 4 5 9" Aur 2 double star

ST194 Theta Dunlop 20 05 24.8 -52.3 6.8 38" Pic 2 double star

ST195 Bellatrix Gamma 0 5 25.1 +06.3 1.6 * Ori 21 star

ST196 ∑698 ADS 4000 05 25.2 +34.9 6.6 31" Aur 2 double star

ST197 ∑716 118 05 29.3 +25 09 5.8 5" Tau 2 double star

ST198 ∑725 31 05 29.7 -01.1 4.7 * Ori 21 star

ST199 TL9 KBC

Group

ST200 Delta ADS 4134 05 32.0 -00.3 2.2 53" Ori 2 double star

ST201 119 CE 05 32.2 +18.6 4.7 * Tau 21 star

ST202 ∑718 05 32.4 +49 24 7. 5 8" Aur 3 double star equal

ST203 RT 05 33.2 + 07. 2 8 * Ori 22 variable star

ST204 ∑747 ADS 4182 05 35.0 -06.0 4.8 36" Ori 2 double star

ST205 Lambda 05 35.1 +09 56 3.4 4" Ori 9 double star magnitude

ST206 Trapezium 05 35.3 -05 23 5.1 13" Ori 7 quadruple star

ST207 ∑752 Iota 05 35.4 -05 55 2.9 11" Ori 9 double star magnitude

ST208 Alnilam Epsilon 05 36.2 - 01.2 1.7 * Ori 21 star

ST209 Phi2 05 36.9 +09.3 4 * Ori 21 star

ST210 Zeta 123 05 37.6 +2 1.1 3 * Tau 21 star

ST 2 11 Sigma 05 38.7 -02 36 3.7 11" Ori 7 quadruple star

ST 212 Phact Alpha 05 39.6 - 3 4.1 2.6 * Col 21 star

ST 213 Alnitak Zeta 05 40.8 -01.9 2 2.4" Ori 9 double star magnitude

ST214 U2 05 42.2 +62.5 7.7 * Cam 22 variable star

ST 215 Gamma ADS 4334 05 44.5 -22.5 3.7 97" Lep 2 double star

ST216 Y 05 45.7 +20.7 7.1 * Tau 22 variable star

05 30.0 +17.0 5 5° Tau 0 asterism

magnitude

contrast

Number Name Other RA Dec Mag Sep Con Code

ST 217 Mu SAO

196149

ST 218 Saiph Kappa 05 47.8 -09.7 2 * Ori 21 star

ST219 ∑795 52 05 48.0 +06 27 6.1 1.3" Ori 4 double star challenge

ST220 Beta Wazn 05 51.0 -35.8 3.1 * Col 21 star

ST221 Delta 05 51.3 -20.9 3.8 * Lep 21 star

ST222 Nu 05 51. 5 + 39.1 4 30" Aur 21 star

ST223 ∑817 05 54.9 +07 02 8.8 19" Ori 3 double star equal

ST224 Betelgeuse Alpha 05 55.2 +07 24 0.5 Stellar Ori 21 star

ST225 U 05 55.8 +20.2 5.3 * Ori 22 variable star

ST226 Theta 05 59.7 +37 13 2.6 3.5" Aur 9 double star magnitude

ST227 Pi 05 59.9 +45.9 4.3 1° Aur 1 red variable star

ST228 ∆23 06 04.8 -48 27 7 2.7" Pup 3 double star equal

ST229 ∑855 06 09.0 +02 30 6 30" Ori 2 double star

ST230 TU 06 10.9 +26.0 7. 5 * Gem 22 variable star

ST231 ∑845 41 0 6 11.7 +48 42 6.1 8" Aur 2 double star

ST232 SS 0 6 13.4 + 4 7. 0 10 * Aur 22 variable star

ST233 Gamma 06 14.9 -06.3 4 8° Mon 21 star

ST234 Propus Eta 06 14.9 +22.5 3.3 * Gem 21 star

ST235 ∑872 ADS 4849 06 15.6 +36.2 6.9 11" Aur 2 double star

ST236 KS 06 19.7 -05.3 9.5 * Mon 22 variable star

ST237 Zeta Furud 06 20.3 -30.1 3 8.5° Cma 21 star

ST238 V 06 22.7 -02.2 6 * Mon 22 variable star

ST239 Mirzam Beta 06 22.7 -18.0 2 * Cma 21 star

ST240 Mu 06 23.0 +22.5 2.9 * Gem 21 star

ST241 8 06 23.8 +04 36 4.3 13" Mon 5 colored double star

ST242 Canopus Alpha 06 24.0 -52 42 -0.7 * Car 21 star

ST243 BL BL 06 25.5 +14.7 8.5 * Ori 22 variable star

ST244 15 06 27.8 +20 47 6.6 27" Gem 2 double star

ST245 Beta 06 28.8 -07 02 3.8 3" Mon 6 triple star

ST246 A DS515 0 06 31.8 +38.9 11. 5 4.5" Aur 2 double star

ST247 ∑924 20 06 32.3 +17.8 6.3 20" Gem 5 colored double star

ST248 ADS5188 06 34.3 +38.1 6.7 43" Aur 2 double star

ST249 CR 06 34.4 +16.1 8.5 * Gem 22 variable star

ST250 ∑928 ADS 5191 06 34.7 +38.4 7. 6 3.5" Aur 2 double star

ST251 ADS5201 06 3 5.1 + 3 7.1 7. 4 2.6" Aur 2 double star

ST252 ∑929 ADS 5208 06 35.4 + 3 7. 7 7. 4 6" Aur 2 double star

ST253 ∑939 06 35.9 +05.3 8.3 30" Mon 2 double star

ST254 ADS5221 06 36.2 +38.0 8.5 1.3 " Aur 4 double star challenge

05 46.0 -32.3 5.2 * Col 21 star

magnitude

contrast

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST255 Nu1 06 36.4 -18.7 6 1 7. 5 " Cma 5 colored double star

ST256 UU 06 36.5 +38.5 5.1 * Aur 22 variable star

ST257 ADS5240 06 36.9 +38.2 9.7 2.2" Aur 2 double star

ST258 ADS5245 0 6 3 7. 3 +38.4 8.8 10" Aur 2 double star

ST259 South529 06 37. 6 +12.2 7. 6 70" Gem 2 double star

ST260 Innes5 06 38.0 -61.5 6.4 2.4" Pic 2 double star

ST261 ADS5265 06 38.4 +38.8 9.6 4.6" Aur 2 double star

ST262 In nes1156 ADS 5311 0 6 39.1 -2 9 .1 8 0.7" Cma 4 double star challenge

ST263 SAO172106 06 39.5 -30.0 7.8 2.5° Cma 1 red variable star

ST264 ∑953 06 41.2 +08 59 7.1 7" Mon 2 double star

ST265 VW 06 42.2 +31.5 8.7 * Gem 22 variable star

ST266 Sirius Alpha 0 6 4 5.1 -16.7 -1 9" Cma 9 double star magnitude

contrast

ST267 ∑948 12 06 46.2 +59 27 4.9 2" Lyn 8 triple star challenge

ST268 ∑958 06 48.2 +55 42 5.5 5" Lyn 3 double star equal

magnitude

ST269 Kappa 13 06 49.8 -32.5 4 * Cma 21 star

ST270 ∑963 14 0 6 53.1 +59.5 5.7 0.4" Lyn 4 double star challenge

ST271 GY 06 53.2 -04.6 9.4 * Mon 22 variable star

ST272 ∑987 06 54.1 -05 51 7.1 1. 3" Mon 4 double star challenge

ST273 Omicron1 16 06 54.1 -24.2 3.9 * Cma 21 star

ST2 74 Theta 14 06 54.2 -12. 0 4 .1 * Cma 21 star

ST275 38 06 54.6 +13 11 4.7 7" Gem 5 colored double star

ST276 ∑997 Mu 06 5 6.1 -14 02 5.3 2.8" Cma 9 double star magnitude

contrast

ST277 BG 06 56.4 + 07.1 9.2 * Mon 22 variable star

ST278 O∑80 06 58.1 +14.2 7. 3 2’ Gem 0 asterism

ST279 RV 06 58.4 +06.2 7 * Mon 22 variable star

ST280 Epsilon 21 06 58.6 -29.0 1.5 7. 5 " Cma 2 double star

ST281 Sigma 22 07 01.7 -27.9 3.5 * Cma 21 star

ST282 Omicron2 24 07 03.0 -23.8 3 * Cma 21 star

ST283 Dunlop38 07 04.0 -43.6 5.6 20.5" Pup 2 double star

ST284 Mekbuda Zeta 07 04.1 +20.6 3.7 * Gem 22 variable star

ST285 ∑1009 07 05.7 +52 45 6.9 4.1" Lyn 3 double star equal

magnitude

ST286 R 07 07.4 +22.7 6 * Gem 22 variable star

ST287 W RV 07 08.1 -11 5 5 6.4 Stellar CMa 1 red variable star

ST288 Gamma Dunlop 42 07 08.8 -70.5 4 13.6" Vol 2 double star

ST289 Tau ADS 5846 07 11.1 +30.2 4.4 1.9" Gem 2 double star

ST290 ∑1035 07 12.0 +22 17 8.2 4" Gem 3 double star equal

magnitude

ST291 ∑1037 ADS 5871 07 12.8 + 2 7. 2 7. 2 1.3" Gem 4 double star challenge

Number Name Other RA Dec Mag Sep Con Code

ST292 Omega 28 07 14.8 -26.8 3.9 * Cma 21 star

ST293 h3945 07 16.6 -23 19 4.5 27" CMa 5 colored double star

ST294 Tau h 3948 07 18.7 -24 57 4.4 15" CMa 6 triple star

ST295 Delta 55 07 2 0 .1 +21 59 3.5 6" Gem 9 double star magnitude

contrast

ST296 ∑1062 19 07 22.9 +55 17 5.6 15" Lyn 6 triple star

ST297 Gamma 4 07 28.2 +08.9 4.3 * Cmi 21 star

ST298 Sigma 07 29.2 -43.3 3.3 22" Pup 2 double star

ST299 ∑1093 ADS 6117 07 30.3 +50.0 8.8 0.8" Lyn 4 double star challenge

ST300 n “HN19,

h269”

ST301 Castor Alpha 07 34.6 + 31.9 2 1.8" Gem 4 double star challenge

ST302 Upsilon 69 07 35.9 +26.9 4 .1 2.5° Gem 1 red variable star

ST303 ∑1121 07 36.6 -14 29 7.9 7" Pup 3 double star equal

ST304 K 07 38.8 -26 48 3.8 10" Pup 3 double star equal

ST305 Procyon Alpha 07 39.3 +05 14 0.4 Stellar CMi 21 star

ST306 O∑179 Kappa 07 44.4 +24 23 3.7 7" Gem 9 double star magnitude

ST307 ∑1138 2 07 45.5 -14 41 6.1 17 " Pup 3 double star equal

ST308 ∑1127 0 7 4 7. 0 +64 03 7 5" Cam 6 triple star

ST309 ∑1149 07 49.4 +0 3 13 7.9 22" Cmi 2 double star

ST310 U V 07 55.1 +22 00 8.2 Stellar Gem 22 variable star

ST 311 Chi 07 56.8 -53.0 3.5 4° Car 21 star

ST 312 Dunlop59 07 59.2 -50.0 6.5 16" Pup 2 double star

ST 313 S-h86 08 02.5 +63.1 6 49" Cam 2 double star

ST314 Naos Zeta 08 03.6 -40.0 2.3 4° Pup 21 star

ST 315 RT 08 05.4 -38.8 8.5 * Pup 22 variable star

ST316 RU 0 8 0 7. 5 -22.9 8.9 * Pup 22 variable star

ST 317 Epsilon Rumker 7 0 8 0 7. 9 -68.6 4.4 6" Vol 2 double star

ST 318 Gamma Dunlop 6508 09.5 - 4 7. 3 1.9 41" Vel 2 double star

07 34.3 -23 28 5.1 10" Pup 3 double star equal

magnitude

contrast

magnitude

ST319 Zeta 0 8 12.2 +17 3 9 4.7 0.6" Cnc 8 triple star challenge

ST320 c Rumker 8 0 8 15.3 -62.9 5.3 4" Car 2 double star

ST321 Beta 17 08 16.5 +09.2 3.5 * Cnc 21 star

ST322 R 08 16.6 +11.7 6.1 * Cnc 22 variable star

ST323 Kappa 08 19.8 -71.5 5.4 65" Vol 2 double star

ST324 AC 08 22.7 -15. 9 8.9 * Pup 22 variable star

ST325 31 08 22.8 +43.2 4.3 15° Lyn 21 star

ST326 Beta 08 25.7 - 6 6 .1 3.8 6° Vol 21 star

Number Name Other RA Dec Mag Sep Con Code

ST327 h4903 08 26.3 - 3 9.1 6.5 8" Pup 2 double star

ST328 ∑1224 24 08 26.7 +24 32 7.1 6" Cnc 2 double star

ST329 ∑1223 Phi 08 26.7 +26 56 6.3 5" Cnc 3 double star equal

magnitude

ST330 h4104 0 8 29.1 - 4 7. 9 5.5 3.6" Vel 2 double star

ST331 ∆70 08 29.5 -44 44 5 5" Vel 2 double star

ST332 h4107 08 31.4 -39 04 6.4 4" Vel 6 triple star

ST333 ∑1245 08 35.8 +06 37 6 10 " Cnc 2 double star

ST334 Sigma 5 H YA 08 38.8 +03.3 4.4 * Hya 21 star

ST335 h4128 08 39.2 -60.3 6.9 1.4" Car 4 double star challenge

ST336 ∑1254 08 40.4 +19 4 0 6.4 21" Cnc 7 quadruple star

ST337 Alpha 08 43.6 -33.2 3.7 * Pyx 21 star

ST338 Delta Innes 10 08 44.7 -54.7 2.1 2.6" Vel 2 double star

ST339 ∑1270 ADS 6977 08 45.3 -02.6 6.4 5" Hya 2 double star

ST340 ∑1268 Iota 08 46.7 +28 46 4 30" Cnc 5 colored double star

ST341 Epsilon 08 46.8 +06 25 3.4 3" Hyd 9 double star magnitude

contrast

ST342 ∑1282 08 50.8 +35 03 7.5 4" Lyn 3 double star equal

magnitude

ST343 X 08 55.4 +17. 2 5.6 * Cnc 22 variable star

ST344 ∑1298 66 09 01.4 +32 15 5.9 5" Cnc 2 double star

ST345 Rho 09 02.5 + 67. 6 4.8 1° Uma 21 star

ST346 ∑1311 0 9 0 7. 5 +22 59 6.9 8" Cnc 3 double star equal

magnitude

ST347 Suhail Lambda 09 08.0 -43 26 2.2 Stellar Vel 21 star

ST348 Sigma2 09 10.4 +67 08 4.8 4" Uma 9 double star magnitude

contrast

ST349 a 0 9 11.0 -59.0 3.4 50’ Car 21 star

ST350 h418 8 09 12.5 -43.6 6.7 2.7’ Vel 2 double star

ST351 h4191 09 14.4 - 43 13 5.2 6" Vel 9 double star magnitude

contrast

ST352 ∑1321 09 14.9 +52 42 8 .1 18" Uma 3 double star equal

magnitude

ST353 g 09 16.2 - 57. 5 4.3 5’ Car 21 star

ST354 RT 09 18.4 +51.4 8.6 * Uma 22 variable star

ST355 ∑1334 38 09 18.8 +36 48 3.9 3" Lyn 4 double star challenge

ST356 ∑1338 09 21.0 +38 11 6.6 1" Lyn 4 double star challenge

ST357 Alpha 40 09 21.1 +34.4 3 .1 * Lyn 21 star

ST358 Kappa 09 2 2 .1 -55.0 2.5 * Vel 21 star

ST359 ∑1347 09 23.3 +03 30 7. 2 21" Hya 2 double star

ST360 Kappa ADS 7351 09 24.7 +26.2 4.5 2.1" Leo 6 triple star

Number Name Other RA Dec Mag Sep Con Code

ST361 ∑1355 0 9 2 7. 3 +0 6 14 7. 5 2.3" Hya 3 double star equal

magnitude

ST362 Alphard Alpha 09 2 7. 6 -08 40 2 Stellar Hya 21 star

ST363 ∑1356 Omega 09 28.5 +09.1 5.9 0.5" Leo 4 double star challenge

ST364 Dunlop76 09 28.6 -45.5 7. 8 61" Vel 2 double star

ST365 ∑1360 09 30.6 +10 3 5 8.3 14" Leo 3 double star equal

magnitude

ST366 Zeta 09 30.8 -31 53 5.8 8" Ant 2 double star

ST367 N 09 31.2 -5 7. 0 3.1 * Vel 21 star

ST368 ∑1351 23 09 31.5 +63 03 3.8 23" Uma 9 double star magnitude

contrast

ST369 Alterf Lambda 09 31.7 +23.0 4.3 * Leo 21 star

ST370 R 09 32.2 -62.8 3.8 * Car 22 variable star

ST371 ∑136 9 A D S 7438 09 35.4 +40.0 6.5 25" Lyn 2 double star

ST372 Iota 09 39.9 - 0 1.1 3.9 * Hya 21 star

ST373 Upsilon Rumker 1109 47.1 -65.1 3.1 5" Car 2 double star

ST3 74 R RV 09 4 7. 6 +11 26 4.4 Stellar Leo 1 red variable star

ST375 W 0 9 51.0 -02.0 9 * Sex 22 variable star

ST376 Y 09 51.1 -23.0 8.3 * Hya 22 variable star

ST377 Rasalas Mu 09 52.8 +26.0 3.9 * Leo 21 star

ST378 h4262 ADS 7571 09 54.5 -12.9 8.7 8" Hya 2 double star

ST379 Regulus Alpha 10 08.4 +11 5 8 1.4 Stellar Leo 21 star

ST380 S 10 09.4 -61.6 4.5 * Car 22 variable star

ST381 ADS7704 10 16.3 +17.7 7. 2 1.4" Leo 4 double star challenge

ST382 Adhafera Zeta 10 16.7 +23.4 3.4 5.5’ Leo 2 double star

ST383 q 10 17.1 - 61.3 3.4 * Car 21 star

ST384 h4306 10 19.1 -64.7 5.6 2.1" Car 2 double star

ST385 Algieba Gamma 10 20.0 +19. 8 2.5 4.4" Leo 2 double star

ST386 Tania Australis Mu 10 22.3 +41.5 3 * Uma 21 star

ST387 Mu 42 10 26.1 -16. 8 3.8 * Hya 21 star

ST388 Alpha 10 2 7. 2 - 31.1 4.3 * Ant 21 star

ST389 45 10 2 7. 6 +09.8 6 3.8" Leo 2 double star

ST390 Delta HN 50 10 29.6 -30 36 5.7 11" Ant 9 double star magnitude

contrast

ST391 p 10 32.0 -61.7 3.3 * Car 21 star

ST392 Rho 47 10 32.8 +09.3 3.9 * Leo 21 star

ST393 49 10 3 5.0 +08 39 5.7 2" Leo 4 double star challenge

ST394 U 10 35.2 -39.6 8.1 * Ant 22 variable star

ST395 Gamma 10 35.5 -78.6 4.1 * Cha 21 star

ST396 U 10 3 7. 6 -13. 4 7 * Hya 22 variable star

ST397 Dunlop95 x 10 39.3 -55.6 4.3 52" Vel 2 double star

Number Name Other RA Dec Mag Sep Con Code

ST398 ∑146 6 35 10 43.4 +04 44 6.3 7" Sex 2 double star

ST399 R 10 44.6 +68.8 7. 5 * Uma 22 variable star

ST4 00 VY 10 45.1 + 6 7.4 5.9 * Uma 22 variable star

ST4 01 Delta 10 45.8 -80.5 4.5 4.5’ Cha 2 double star

ST402 ∑1476 40 10 49.3 -04 01 6.9 2.5" Sex 2 double star

ST4 03 Nu 10 49.6 -16.2 3 .1 * Hya 21 star

ST4 04 54 ADS 7979 10 55.6 +24.8 4.5 6.8" Leo 2 double star

ST4 05 SAO251342 11 17. 5 -63.5 7 7" Car 9 double star magnitude

contrast

ST4 06 Xi ADS 8119 11 18. 2 + 31.5 4.5 1.3" Uma 4 double star challenge

ST4 07 Alula Borealis Nu 11 18.5 + 3 3 .1 3.5 7" Uma 2 double star

ST4 08 ∑1529 11 19.4 -01 38 7 10" Leo 2 double star

ST4 09 h4432 11 23.4 -65.0 5 .1 2.3" Mus 2 double star

ST410 Iota A DS 8148 11 23.9 +10.5 4 1.3" Leo 4 double star challenge

ST411 ∑1540 83 11 26.8 +03 00 6.2 29" Leo 6 triple star

ST412 Tau 84 11 2 7. 9 +02.9 5.5 1.5’ Leo 2 double star

ST413 Giausar Lambda 11 31.4 +69.3 3.8 20’ Dra 1 red variable star

ST414 88 x 11 31.8 +14 2 1 6.4 16" Leo 2 double star

ST415 N 11 3 2.3 -29 16 5.8 9" Hyd 3 double star equal

magnitude

ST416 Innes78 11 33.6 -40.6 6 1" Cen 4 double star challenge

ST417 ∑1552 11 34.7 +16 4 8 6 3" Leo 6 triple star

ST418 Nu 11 45.9 +06.5 4 * Vir 21 star

ST419 Denebola Beta 11 49 .1 +14 3 4 2.1 Stellar Leo 21 star

ST420 Beta 11 52.9 -33.9 4.7 0.9" Hya 5 colored double star

ST421 O∑112 11 54. 6 +19 .4 8.4 73" Leo 2 double star

ST422 ∑1579 65 11 5 5.1 +46 29 6.7 4" Uma 2 double star

ST423 Epsilon h4486 11 5 9.6 -78.2 5.4 0.9" Cha 5 colored double star

ST424 ∑1593 12 03.5 -02 26 8.7 1.3" Vir 4 double star challenge

ST425 Zeta 2 12 04.3 +21. 5 6 3.6" Com 2 double star

ST426 Delta 12 08.4 -50.7 2.6 4.5’ Cen 2 double star

ST427 ∑1604 12 09.5 -11 51 6.6 10" Crv 6 triple star

ST428 Epsilon 12 10.1 -22.6 3 * Crv 21 star

ST429 Rumker14 12 14.0 -45.7 5.6 2.9" Cen 2 double star

ST430 Delta 12 15.1 -58.7 2.8 * Cru 21 star

ST4 31 2 ADS 8489 12 16 .1 +40.7 6 11.5" Cvn 5 colored double star

ST4 32 Epsilon 12 17.6 -68.0 4.1 * Mus 1 red variable star

ST4 33 ∑1627 12 18.1 -03 56 6.6 20" Vir 3 double star equal

magnitude

ST4 34 R 12 19.6 -19. 3 6.7 * Crv 22 variable star

ST4 35 ∑1633 12 20.6 +27 03 6.3 9" Com 3 double star equal

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST4 36 Epsilon 12 21.4 -60.4 3.6 * Cru 21 star

ST4 37 M40 Winnecke 412 22.4 +58 05 9 50" UMa 2 double star

ST4 38 17 ADS 8531 12 22.5 +05.3 6.5 21" Vir 2 double star

ST4 39 ∑1639 ADS 8539 12 24.4 +25.6 6.8 1.6" Com 4 double star challenge

ST4 40 S 12 24.6 -49.4 9.2 * Cen 22 variable star

ST4 41 SS RV 12 25.3 +00 48 6 Stellar Vir 1 red variable star

ST4 42 Acrux Alpha 12 26.6 - 6 3 .1 1 4.4" Cru 2 double star

ST4 4 3 3C273 12 29.1 +02.0 12.8 * Vir 0 asterism

ST444 Algorab Delta 12 29.9 -16.5 3 24" Crv 2 double star

ST4 45 Gacrux Gamma 12 31.2 - 5 7.1 1.6 10" Cru 2 double star

ST4 46 ∑1649 ADS 8585 12 31.6 -11.1 8 15" Vir 2 double star

ST4 47 24 12 35.1 +18 2 3 5 20" CVn 5 colored double star

ST4 48 Alpha 12 37. 2 - 6 9.1 2.7 * Mus 21 star

ST4 49 ADS8612 12 3 7.7 -27.1 5.5 1.3" Hya 4 double star challenge

ST450 ∑1669 12 41. 3 -13 0 1 5.3 5" Crv 3 double star equal

magnitude

ST4 51 Gamma h4539 12 41.5 -49.0 2.2 1" Cen 4 double star challenge

ST4 52 Porrima Gamma 12 41.7 -01.4 3.5 3" Vir 2 double star

ST4 53 Y RV 12 4 5 .1 +45 26 7.4 Stellar CVn 1 red variable star

ST4 54 Iota h4547 12 45.6 - 61.0 4.7 27 Cru 2 double star

ST4 55 Beta 12 46.3 - 6 8.1 3.7 1.4 Mus 4 double star challenge

ST4 56 Mimosa Beta 12 4 7. 7 -59.7 1.3 * Cru 21 star

ST4 57 ∑1694 32 12 49.2 +83 25 5.3 22" Cam 3 double star equal

magnitude

ST4 58 ∑1687 35 12 53.3 +21 14 5.1 29" Com 9 double star magnitude

contrast

ST4 59 Mu Dunlop

126

ST4 60 Delta 12 55.6 +03.4 3.4 * Vir 1 red variable star

ST4 61 Cor Caroli Alpha 12 56.0 +38.3 3 19" Cvn 2 double star

ST4 62 RY 12 56.4 +66.0 6.8 * Dra 22 variable star

ST4 63 ∑1699 12 58.7 +27 28 8.8 1.5" Com 4 double star challenge

ST4 6 4 Delta 13 02.3 -71.5 3.6 8’ Mus 21 star

ST4 65 Theta Rumker 1613 08.1 -65.3 5.7 5.3" Mus 2 double star

12 54.6 -57. 2 4.3 35" Cru 2 double star

ST4 66 ∑1724 “51,

Theta”

ST4 67 Alpha 13 10.0 +17 32 5 0.5" Com 4 double star challenge

ST4 68 54 13 13.4 -18 5 0 6.8 5" Vir 2 double star

ST4 69 J Dunlop

133

13 09.9 -05 32 4.4 7" Vir 8 triple star challenge

13 22.6 - 61.0 4.7 1’ Cen 2 double star

Number Name Other RA Dec Mag Sep Con Code

ST470 Mizar Zeta 13 23.9 +54 56 2.3 14" Uma 2 double star

ST471 Spica Alpha 13 25. 2 -11.2 1 * Vir 21 star

ST472 O∑∑123 13 2 7.1 +64 43 6.7 69" Dra 5 colored double star

ST473 R V 13 29.7 -23 17 4 Stellar Hyd 22 variable star

ST474 ∑1755 ADS 8934 13 32.3 +36.8 7 4.4" Cvn 2 double star

ST475 S 13 33.0 - 0 7. 2 6 * Vir 22 variable star

ST476 25 A D S 8974 1 3 3 7. 5 +36.3 5 1.8 " Cvn 9 double star magnitude

contrast

ST477 ∑1763 ADS 8972 13 3 7. 6 - 0 7. 9 7. 9 2.8" Vir 2 double star

ST478 Epsilon 13 39.9 -53.5 2.3 * Cen 21 star

ST479 ∑1772 1 13 4 0.7 +19 57 5.7 5" Boo 9 double star magnitude

contrast

ST480 Dunlop141 13 41.7 -54.6 5.3 5.3" Cen 2 double star

ST4 81 T 13 41.8 -33.6 5.5 * Cen 22 variable star

ST4 82 Alkaid Eta 13 47. 5 +49.3 1.9 * Uma 21 star

ST4 83 ∑1785 ADS 9031 13 49 .1 +27.0 7. 6 3.4" Boo 2 double star

ST4 84 2 13 49.4 -34.5 4.2 * Cen 21 star

ST4 85 Upsilon 13 49.5 +15.8 4.1 * Boo 21 star

ST4 86 3 k 13 51.8 -33.0 4.5 8" Cen 2 double star

ST4 87 Zeta 13 55.5 -47.3 2.6 5° Cen 21 star

ST4 88 Hadar Beta 14 03.8 -60.4 0.6 * Cen 21 star

ST4 89 Pi 14 06.4 -26.7 3.3 * Hya 21 star

ST4 90 Kappa 14 12.9 -10 .3 4.2 * Vir 21 star

ST4 91 Kappa 14 13.5 +51 47 4.4 13" Boo 5 colored double star

ST4 92 ∑1819 14 15.3 +03 08 7.8 0.8" Vir 4 double star challenge

ST4 93 Arcturus Alpha 14 15.7 +19 11 0 Stellar Boo 21 star

ST4 94 Iota A DS 9198 14 16.2 +51.4 4.9 39" Boo 2 double star

ST4 95 R 14 16.6 -59.9 5.3 * Cen 22 variable star

ST4 96 ∑1834 ADS 9229 14 20.3 +48.5 8.1 1.3 " Boo 4 double star challenge

ST4 97 ∑1833 14 22.6 -07 46 7.6 6" Vir 3 double star equal

magnitude

ST4 98 Dunlop159 14 22.6 -58.5 5 9" Cen 5 colored double star

ST4 99 ∑1835 14 23.4 +08 26 5.1 6" Boo 2 double star

ST500 SHJ 179 14 25.5 -19 5 8 6.4 35" Lib 2 double star

ST501 5 ADS 9286 14 2 7. 5 +75.7 4.3 * Umi 21 star

ST502 Proxima 14 29.9 -62.7 10.7 * Cen 22 variable star

ST503 Rho ADS 9296 14 31.8 +30.4 3.6 * Boo 21 star

ST504 h4690 14 3 7. 3 -46 08 5.4 19" Lup 9 double star magnitude

contrast

ST505 Rigil Kentaurus Alpha 14 39.6 -60 50 0 20" Cen 2 double star

ST506 Pi ADS 9338 14 40.7 +16.4 5 5.6" Boo 2 double star

ST507 ∑1864 pi 14 40.7 +16 25 4.9 6" Boo 2 double star

Number Name Other RA Dec Mag Sep Con Code

ST508 Zeta 14 41.1 +13 44 3.8 1" Boo 4 double star challenge

ST509 Alpha 14 41.9 - 47. 4 2.3 * Lup 21 star

ST510 q 14 42.0 -37.8 4 * Cen 21 star

ST 511 Alpha Dunlop

166

ST512 c1 14 43.7 -35.2 4 17’ Cen 21 star

ST513 Izar Epsilon 14 45.0 +27 04 2.4 3" Boo 5 colored double star

ST514 Dunlop Dunlop

169

ST515 54 H 97 14 46.0 -25 26 5.2 8" Hya 2 double star

ST516 Alpha 14 47. 9 -79.0 3.8 10 ° Aps 21 star

ST517 ∑1883 14 48.9 +05 57 7. 6 0.7" Vir 4 double star challenge

ST518 Mu 14 49.3 -14 09 5.4 2" Lib 4 double star challenge

ST519 39 14 49.7 +48 43 5.7 3" Boo 2 double star

ST520 58 14 5 0.3 -28.0 4.4 * Hya 21 star

ST521 Kochab Beta 14 50.7 +74.2 2 .1 * Umi 21 star

ST522 Zubenelgenubi Alpha 14 5 0.9 -16.0 2.8 4’ Lib 2 double star

ST523 Xi 37 14 51.4 +19 0 6 4.6 7" Boo 5 colored double star

ST524 h4715 14 56.5 - 4 7. 9 6 2.4" Lup 2 double star

ST525 33 H 28 14 57.3 -21 22 5.9 23" Lib 2 double star

ST526 Beta 14 5 8.5 - 43.1 2.6 * Lup 21 star

ST527 Pi 15 01.8 -83.2 5.7 18’ Oct 2 double star

ST528 44 15 0 3.8 +47 39 4.8 1.5" Boo 4 double star challenge

ST529 Sigma 15 04.1 -25.3 3.2 * Lib 1 red variable star

ST530 Dunlop178 15 11.6 -45.3 6.7 32" Lup 2 double star

ST531 Kappa Dunlop

177

ST532 X 15 14.3 -70.1 8.1 * Tra 22 variable star

ST533 ∑1932 15 18.3 +26 50 6.6 1. 5" CrB 4 double star challenge

ST534 Mu h4753 15 18.5 - 47. 9 5.1 1.2" Lup 4 double star challenge

ST535 ∑1931 15 18.7 +10 26 7 13" Ser 2 double star

ST536 S 15 21.4 +31.4 5.8 * Crb 22 variable star

ST537 Phi1 15 21.8 -36.3 3.6 50’ Lup 21 star

ST538 Eta 15 23.2 +30 17 5.6 1.0" CrB 4 double star challenge

ST539 Mu 15 24. 5 +37 23 4.3 2" Boo 6 triple star

ST540 Edasich Iota 15 24.9 +59.0 3.3 * Dra 21 star

ST541 ∑1972 Pi 15 29.2 +80 26 6.9 31" Umi 2 double star

ST542 Lal123 15 3 3.1 -24 29 7.5 9" Lib 3 double star equal

ST543 ∑1954 Delta 15 34.8 +10. 5 4 3.9" Ser 2 double star

ST544 Gamma 15 35.1 -41.2 2.8 * Lup 21 star

ST545 h4788 d 15 35.9 -45.0 4.7 2.2" Lup 2 double star

14 42.5 -65.0 3.2 16" Cir 2 double star

14 45.2 -55.6 6.2 68" Cir 2 double star

15 11.9 -48.7 3.9 27" Lup 2 double star

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST546 Upsilon ADS 9705 15 3 7. 0 - 28.1 3.6 3" Lib 5 colored double star

ST547 Omega 15 3 8 .1 -42.6 4.3 * Lup 1 red variable star

ST548 ∑1962 15 3 8.7 -08 47 5.8 12 " Lib 3 double star equal

magnitude

ST549 Tau 40 15 38.7 -29.8 3.7 2° Lib 21 star

ST550 ∑1965 Zeta 15 39.4 +36.6 5 6.3" Crb 2 double star

ST551 ∑1967 Gamma 15 42.7 +26.3 4.2 0.3" Crb 4 double star challenge

ST552 Unukalhai Alpha 15 44.3 +06.4 2.7 * Ser 21 star

ST553 R V 15 48.6 +28 09 5.7 Stellar CrB 22 variable star

ST554 Kappa 35 15 48.7 +18.1 4.1 * Ser 1 red variable star

ST555 R 15 50.7 +15.1 5.2 * Ser 22 variable star

ST556 Xi 15 56.9 -33 58 5.2 10" Lup 2 double star

ST557 Rho 5 15 56.9 -29.2 3.9 * Sco 21 star

ST558 Epsilon 13 15 5 7. 6 +26.9 4.2 * Crb 21 star

ST559 Pi 6 15 58.9 -26 .1 2.9 * Sco 21 star

ST560 T V 15 59.5 +25 55 2 Stellar CrB 22 variable star

ST561 Eta Rmk 21 16 0 0.1 -38 24 3.6 15" Lup 9 double star magnitude

contrast

ST562 Delta 7 16 00.3 -22.6 2.3 * Sco 21 star

ST563 Xi 16 04.4 -11 22 4.2 1" Sco 8 triple star challenge

ST564 Grafﬁas Beta 16 05.4 -19. 8 2.5 * Sco 21 star

ST565 Omega1 9 16 06.8 -20.7 4 14’ Sco 21 star

ST566 Kappa 16 08.1 +17 0 3 5 28" Her 5 colored double star

ST567 Nu 16 12.0 -19 28 4 1" Sco 7 quadruple star

ST568 Yed Prior Delta 16 14.3 -03.7 2.7 * Oph 21 star

ST569 ∑2032 “ 17,

Sigma”

ST570 Delta 16 20.3 -78.7 4.7 * Aps 2 double star

ST571 Sigma H 121 16 21.2 -25 35 2.9 20" Sco 9 double star magnitude

ST572 Rho ADS

100 49

ST573 V 16 26.7 -12. 4 7. 3 * Oph 22 variable star

ST5 74 Epsilon h4853 16 2 7.2 - 47.6 4.8 23" Nor 2 double star

ST575 Iota Dunlop

201

ST576 ∑2052 ADS

10075

ST577 Antares Alpha 16 29.4 -26.4 1 3" Sco 4 double star challenge

ST578 Lambda ADS

10087

ST579 R 16 32.7 +66.8 6.7 * Dra 22 variable star

16 14.7 +33 52 5.2 7" CrB 2 double star

contrast

16 25.6 -23.5 5.3 3.1" Oph 2 double star

16 28.0 -6 4.1 5.3 20" Tra 2 double star

16 28.9 +18.4 7.7 1.7" Her 2 double star

16 30.9 +02.0 4.2 1.4" Oph 4 double star challenge

Number Name Other RA Dec Mag Sep Con Code

ST580 16 16 36.2 +52 55 5.1 3" Dra 6 triple star

ST581 H 16 36.4 -35.3 4.2 * Sco 21 star

ST582 Zeta 13 1 6 3 7. 2 -10.6 2.6 * Oph 21 star

ST583 SU 16 40.6 -32.4 8 * Sco 22 variable star

ST584 Zeta ADS

10157

ST585 Atria Alpha 16 48.7 -69.0 1.9 * Tra 21 star

ST586 Eta 16 49.8 -59.0 3.8 * Ara 21 star

ST587 Epsilon 26 16 50.2 -34.3 2.3 * Sco 21 star

ST588 Mu 16 52.3 -38.0 3 * Sco 21 star

ST589 ∑2118 20 16 56.4 +65.0 7.1 1.4" Dra 4 double star challenge

ST590 RR 16 56.6 -30.6 5.1 * Sco 22 variable star

ST591 Kappa 27 16 57.7 +09.4 3.2 75’ Oph 21 star

ST592 Zeta 16 58.6 -56.0 3.1 * Ara 21 star

ST593 Epsilon1 16 59.6 -53.2 4.1 40’ Ara 21 star

ST594 Mu 17 05.3 +54 28 4.9 2" Dra 3 double star equal

ST595 Sabik Eta 17 10.4 -15.7 2.4 0.6" Oph 4 double star challenge

ST596 Rasalgethi Alpha 17 14.6 +14 .4 3 4.6" Her 3 double star equal

ST597 Delta 17 15.0 +24 50 3.2 10" Her 9 double star magnitude

ST598 Pi 67 17 15.0 +36.8 3.2 7° Her 21 star

ST599 36 17 15.3 -26 36 4.3 5" Oph 3 double star equal

ST600 39 17 18.0 -24 17 5.2 10" Oph 5 colored double star

ST601 Theta 42 17 22.0 -25.0 3.3 * Oph 21 star

ST602 ∑2161 “75, Rho” 17 2 3.7 +37 09 4.2 4" Her 2 double star

ST603 Beta 17 25.3 -55.5 2.9 * Ara 21 star

ST604 Gamma 17 25.4 -56.4 3.3 * Ara 21 star

ST605 Sigma 49 17 26.5 + 0 4 .1 4.3 4° Oph 21 star

ST606 h4949 Dunlop

216

ST607 ∑2173 17 30.4 -01 04 6 1.1" Oph 4 double star challenge

ST608 Lambda 76 17 3 0.7 +2 6 .1 4.4 * Her 21 star

ST609 Lesath Upsilon 17 30. 8 -37. 3 2.7 * Sco 21 star

ST610 Alpha 17 31.8 -49.9 3 * Ara 21 star

ST 611 Nu 17 32.2 +55 11 4.9 62" Dra 3 double star equal

ST612 Shaula Lambda 17 3 3.6 -37.1 1.6 35’ Sco 21 star

ST613 Rasalhague Alpha 17 3 4.9 +12 34 2.1 * Oph 21 star

ST614 Iota 85 17 39.5 +46.0 3.8 * Her 21 star

16 41. 3 +31.6 3 1.4" Her 5 colored double star

magnitude

contrast

magnitude

17 26.9 -45.9 6 2.2" Ara 2 double star

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST615 ∑2241 Psi 17 41.9 +72 09 4.9 30" Dra 2 double star

ST616 Kappa 17 42.5 -39.0 2.4 2.5° Sco 21 star

ST617 V 17 43.3 - 5 7. 7 5.7 * Pav 22 variable star

ST618 Cebalrai Beta 17 43.5 +04.6 2.8 * Oph 21 star

ST619 ∑2202 61 17 4 4.6 +02 34 6.2 21" Oph 3 double star equal

magnitude

ST620 SZ 17 45.0 -18 .6 9 * Sgr 22 variable star

ST621 SX 17 47. 5 -35.7 8.5 * Sco 22 variable star

ST622 G 17 49.9 - 3 7. 0 3.2 2° Sco 21 star

ST623 Y 17 52.6 -06.2 6 * Oph 22 variable star

ST624 Grumium Xi 17 53. 5 +56.9 3.8 * Dra 21 star

ST625 Eltanin Gamma 17 56.6 + 51.5 2.2 * Dra 21 star

ST626 Barnards Star 17 57.8 +04 34 9.5 Stellar Oph 21 star

ST627 h5003 17 5 9.1 -30 15 5 6" Sgr 5 colored double star

ST628 ∑2038 40-41 18 00.0 +80.0 5.7 20" Dra 3 double star equal

magnitude

ST629 95 18 01.5 +21 36 4.3 6" Her 3 double star equal

magnitude

ST630 Tau ADS

11005

ST631 ∑2276 70 18 05.5 +02 30 4 1.5" Oph 4 double star challenge

ST632 Theta 18 06.6 -50.1 3.7 * Ara 21 star

ST633 ∑2280 100 18 07.8 +26 06 5.9 14" Her 3 double star equal

ST634 W 18 14.9 +36.7 7. 3 * Lyr 22 variable star

ST635 Eta 18 17. 6 -36.8 3.1 * Sgr 21 star

ST636 Kappa 1 18 19.9 + 3 6 .1 4.3 * Lyr 21 star

ST637 Kaus Media Delta 18 21.0 -29.8 2.7 * Sgr 21 star

ST638 ∑2306 18 2 2.2 -15 05 7.9 10 " Sct 2 double star

ST639 Xi Gale 2 18 23.2 -61.5 4.4 * Pav 21 star

ST640 ∑2323 39 18 24.0 +58 48 4.9 4" Dra 6 triple star

ST641 21 ADS

11325

ST642 Alpha 18 27.0 -46.0 3.5 6’ Tel 21 star

ST643 59 18 27.2 +00 12 5.2 4" Ser 5 colored double star

ST644 Kaus Borealis Lambda 18 28.0 -25.4 2.8 * Sgr 21 star

ST645 SS 18 3 0.4 -16.9 9 * Sgr 22 variable star

ST646 Delta 18 31.8 -45.9 5 11’ Te l 2 double star

ST647 T 18 32.3 + 37. 0 7. 8 * Lyr 1 red variable star

ST648 ∆222 Kappa 18 33.4 -38 44 5.9 21" CrA 3 double star equal

ST649 ∑2348 18 33.9 +52 18 6 26" Dra 2 double star

18 03.1 -08.2 5.2 1.8 " Oph 4 double star challenge

magnitude

18 25.3 -20.5 4.9 1.8" Sgr 4 double star challenge

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST650 Alpha 18 35.2 -08.2 3.9 * Sct 21 star

ST651 O∑359 18 35.5 +23 36 6.3 0.7" Her 4 double star challenge

ST652 O∑358 ADS

11483

ST653 Vega Alpha 18 36.9 +38 47 0 Stellar Lyr 21 star

ST654 X 18 3 8.3 +08.8 5.9 * Oph 22 variable star

ST655 HK 18 42.8 + 3 7.0 9.5 * Lyr 22 variable star

ST656 ∑2398 18 43.0 +59.6 8 13" Dra 2 double star

ST657 Double-Double Epsilon 18 44.3 +39 40 4.7 2" Lyr 7 quadruple star

ST658 Zeta 18 44.8 +37 36 4.4 44" Lyr 2 double star

ST659 ∑2375 18 45.5 +05 30 6.2 2" Ser 3 double star equal

ST660 ∑2379 5 18 46.5 -00 58 5.8 13" Aql 6 triple star

ST661 R V 18 47. 5 -05 42 4.5 Stellar Sct 22 variable star

ST662 Beta 18 50.0 +33 24 3.5 47" Lyr 9 double star magnitude

ST663 S ADS

11726

ST664 ∑2404 18 50.8 +10 59 6.9 4" Aql 2 double star

ST665 ∑2420 Omicron 18 51.2 +59 22 4.9 35" Dra 2 double star

ST666 Delta2 ADS

11825

ST667 O∑525 18 54.9 +33 58 6 45" Lyr 5 colored double star

ST668 Nunki Sigma 18 55.3 -26.3 2 * Sgr 21 star

ST669 13 R 18 55.3 +43.9 3.9 4" Lyr 21 star

ST670 ∑2417 “63,

Theta”

ST671 ADS11871 18 57.0 +32.9 5.4 1" Lyr 4 double star challenge

ST672 ∑2422 ADS

11869

ST673 UV 18 58.6 +14. 4 8.6 * Aql 22 variable star

ST6 74 ∑2426 19 00.0 +12 53 7.1 17" Aql 5 colored double star

ST675 BrsO14 19 01.1 -37 03 6.6 13" Cra 3 double star equal

ST676 h5082 19 03.1 -19 14 6 7" Sgr 6 triple star

ST677 V RV 19 04.4 -05 41 6.6 Stellar Aql 1 red variable star

ST678 15 19 05.0 -04 02 5.4 38" Aql 5 colored double star

ST679 Gamma 19 06.4 -37 00 5 3" Aql 3 double star equal

ST680 R RV 19 06.4 +08 14 5.5 Stellar Aql 1 red variable star

ST681 ∑2449 19 06.4 +07 09 7. 2 8" Aql 2 double star

ST682 ∑2474 19 0 9.1 +34 35 6.5 16" Lyr 2 double star

18 35.9 +17. 0 6.8 1.6" Her 4 double star challenge

magnitude

contrast

18 50.3 - 07. 9 6.8 14.3" Sct 2 double star

18 54.5 +36.9 4.5 * Cyg 21 star

18 56.3 + 0 4 11 4 .1 22" Ser 2 double star

18 5 7.1 +26 .1 8 0.7" Lyr 4 double star challenge

magnitude

Number Name Other RA Dec Mag Sep Con Code

ST683 ∑2486 19 12.1 +49 51 6.6 8" Cyg 3 double star equal

magnitude

ST684 O∑178 19 15.3 +15.1 5.7 90" Aql 2 double star

ST685 Tau 60 19 15.5 +73.4 4.5 * Dra 21 star

ST686 RY 19 16.5 -33.5 6 * Sgr 22 variable star

ST687 U V 19 18.8 +19 3 7 6.6 Stellar Sge 22 variable star

ST688 V19 42 19 19.2 -15. 9 6.4 * Sgr 22 variable star

ST689 UX RV 19 21.6 +76 34 5.9 Stellar Dra 1 red variable star

ST690 RR V 19 25. 5 +42 47 7.1 Stellar Lyr 22 variable star

ST691 ∑2525 ADS

12447

ST692 h5114 19 27.8 -54.3 5.7 70" Tel 2 double star

ST693 Alpha 6 19 28.7 +24.7 4.4 * Vul 21 star

ST694 Albireo Beta 19 30.7 +28.0 3 35" Cyg 5 colored double star

ST695 Mu 38 19 3 4.1 +07.4 4.5 * Aql 21 star

ST696 AQ 19 34.3 -16.4 9 .1 * Sgr 22 variable star

ST697 R 19 36.8 +50.2 6 .1 * Cyg 22 variable star

ST698 HN84 19 39.4 +16 3 4 6.4 28" Sge 5 colored double star

ST699 54 ADS

12767

ST700 TT 19 40.9 +32.6 7. 8 * Cyg 22 variable star

ST701 16 19 41.8 +50 32 6 39" Cyg 3 double star equal

ST702 ∑2579 “18,

Delta”

ST703 O∑∑191 H V 137 19 45.9 +35 01 6 39" Cyg 5 colored double star

ST704 Taraze d Gamma 19 46.3 +10.6 2.7 * Aql 21 star

ST705 ∑2580 17 19 46.4 +33 44 5 26" Cyg 9 double star magnitude

ST706 Delta 7 19 4 7. 4 +18.5 3.8 * Sge 21 star

ST707 Epsilon 19 48.2 +70 16 3.8 3" Dra 9 double star magnitude

ST708 ∑2583 Pi 19 4 8.7 +11.8 6.1 1.4" Aql 4 double star challenge

ST709 Zeta 19 49.0 +19 0 9 5 9" Sge 2 double star

ST 710 Chi V 19 50.6 +32 55 3.3 Stellar Cyg 22 variable star

ST 711 Altair Alpha 19 50.8 +08 52 0.8 * Aql 21 star

ST 712 Eta 55 19 52.5 +01.0 3.4 * Aql 22 variable star

ST 713 57 19 5 4.6 -08 14 5.7 36" Aql 2 double star

ST 714 O∑532 Beta 19 55.3 +06.4 3.7 13 " Aql 2 double star

ST 715 Psi 19 55.6 +52 26 4.9 3" Cyg 9 double star magnitude

ST 716 RR 19 55.9 -29.2 5.4 * Sgr 22 variable star

19 26.6 + 2 7. 3 8.1 2" Vul 2 double star

19 40.7 -16. 3 5.4 38" Sgr 2 double star

magnitude

19 45.0 +45 08 2.9 2" Cyg 9 double star magnitude

contrast

Number Name Other RA Dec Mag Sep Con Code

ST 717 RU 19 58.7 -41.9 6 * Sgr 22 variable star

ST 718 Gamma 12 19 58.8 +19. 5 3.5 * Sge 21 star

ST 719 BF 20 02.4 +21.1 8.5 * Sge 22 variable star

ST720 h1470 20 03.6 +38 19 7.6 29" Cyg 5 colored double star

ST721 X 20 0 5.1 +20.7 7 * Sge 22 variable star

ST722 WZ 20 0 7. 6 +17.7 7 * Sge 22 variable star

ST723 ∑2675 Kappa 20 08.9 +77 43 4.4 7" Cep 9 double star magnitude

contrast

ST724 ∑2637 Theta 20 09.9 +20 55 6.4 12 " Sge 6 triple star

ST725 RY 20 10.4 +36.0 8.5 * Cyg 22 variable star

ST726 FG 20 11.9 +20.3 9.5 * Sge 35 planetary nebula irregular

ST727 ∑2644 20 12.6 +00 52 6.8 3" Aql 3 double star equal

magnitude

ST728 RS 20 13.4 +38.7 6.5 * Cyg 22 variable star

ST729 ∑2658 20 13.6 +53 07 7.1 5" Cyg 2 double star

ST730 Omicron1 “ADS

13554, V 695”

ST731 RT 2 0 17.1 -21.3 8.9 * Cap 22 variable star

ST732 Alpha 2 0 17.6 -12.5 4.2 44" Cap 21 star

ST733 RT 2 0 1 7.7 - 3 9.1 6 * Sgr 22 variable star

ST734 P 2 0 17.8 +38 02 3 Stellar Cyg 22 variable star

ST735 Alpha 20 18.0 -12 3 2 3.8 7" Cap 7 quadruple star

ST736 ∑2671 20 18.4 +55 23 6 4" Cyg 2 double star

ST737 U 20 19.6 + 47. 9 5.9 * Cyg 22 variable star

ST738 Dabih Beta 20 21.0 -14 .8 3.4 3’ Cap 2 double star

ST739 39 39 20 23.9 +32.2 4.4 * Cyg 21 star

ST740 Peacock Alpha 20 25.6 -56.7 1.9 * Pav 21 star

ST741 pi 20 27.3 -18 13 5.3 3" Cap 9 double star magnitude

ST742 Omicron SHJ 324 20 29.9 -18 35 6.1 19" Cap 2 double star

ST743 ∑2716 49 20 41.0 + 32 18 5.5 3" Cyg 9 double star magnitude

ST744 V 20 41.3 +48.2 7.7 * Cyg 22 variable star

ST745 Deneb Alpha 20 41.4 +45 17 1.3 * Cyg 21 star

ST746 ∑2726 52 20 45.7 +30.7 4.2 6" Cyg 2 double star

ST747 Gamma 20 46.7 +16 0 7 4.3 10" Del 2 double star

ST748 Lambda ADS

14296

ST749 3 20 47.7 -05.0 4.4 * Aqr 1 red variable star

ST750 S763 20 48.4 -18 11 6.7 16" Cap 2 double star

20 13.6 +46.7 3.8 * Cyg 21 star

contrast

20 47.4 +36.5 4.9 0.9" Cyg 4 double star challenge

Number Name Other RA Dec Mag Sep Con Code

ST751 4 ADS

14360

ST752 Omega 18 20 51.8 -26.9 4.1 * Cap 21 star

ST753 Epsilon 1 20 5 9.1 +04 18 5.2 1" Equ 8 triple star challenge

ST754 ∑2751 ADS

14575

ST755 ∑274 2 2 21 02.2 +07 11 7.4 3" Equ 3 double star equal

ST756 Dunlop236 21 02.2 -43.0 6 57" Mic 2 double star

ST757 Lambda ADS

14556

ST758 12 21 0 4.1 -05 49 5.9 3" Aqr 4 double star challenge

ST759 Xi 62 21 04.9 +43.9 3.7 * Cyg 21 star

ST760 ∑2758 61 21 06.9 +38 39 5.2 29" Cyg 2 double star

ST761 24 ADS

14632

ST762 T 21 09.5 +68.5 5.2 * Cep 22 variable star

ST763 Gamma 21 10.3 +10.1 4.7 6’ Equ 2 double star

ST764 ∑2780 ADS

14749

ST765 Delta 21 14.5 +10 0 0 4.6 48" Equ 9 double star magnitude

ST766 Theta h5258 21 19.9 -53.5 4.5 6" Ind 2 double star

ST767 RY 21 20.3 -10. 8 8 * Aqr 22 variable star

ST768 Y 21 24.3 -69.7 8.6 * Pav 22 variable star

ST769 Beta 21 28.7 +70 33 3.3 13" Cep 9 double star magnitude

ST770 S RV 21 35.2 +78 37 7. 4 Stellar Cep 1 red variable star

ST771 ∑2816 21 39.0 +57 29 5.6 12" Cep 6 triple star

ST772 V460 21 42.0 +35.5 5.6 * Cyg 22 variable star

ST773 SS 21 42.7 +43 35 8.2 Stellar Cyg 22 variable star

ST774 RV 21 43.3 +38.0 7.1 * Cyg 22 variable star

ST775 Herschel’s

Garnet Star

ST776 Epsilon 21 44.2 +09 52 2.5 83" Peg 9 double star magnitude

ST777 Lambda h5278 21 50.9 -82.7 5.4 3" Oct 2 double star

ST778 AG 21 51.0 +12 .6 6 * Peg 22 variable star

ST779 ∑2840 21 52.0 +55 47 5.5 18" Cep 2 double star

ST780 ∑2841 ADS

ST781 RX 21 56.4 +22.9 8 * Peg 22 variable star

Mu 21 43.5 +58 47 3.4 Stellar Cep 1 red variable star

154 31

20 51.4 -05.6 6.4 0.8" Aqr 4 double star challenge

21 02.1 +56.7 6.1 1.5" Cep 4 double star challenge

magnitude

21 02.2 + 07. 2 7. 4 3" Equ 2 double star

21 07.1 -25.0 4.5 * Cap 39 stellar planetary nebula

21 11.8 +60.0 5.6 1.0" Cep 4 double star challenge

contrast

21 54.3 +19 .7 6.4 22" Peg 2 double star

Number Name Other RA Dec Mag Sep Con Code

ST782 ∑2873 21 58.4 +82 51 7.1 14" Cep 3 double star equal

magnitude

ST783 Eta ß 276 22 00.8 -28 27 5.8 1.9 " Psa 2 double star

ST784 29 S 802 22 02.5 -16 5 8 7. 2 4" Aqr 3 double star equal

magnitude

ST785 ∑2863 “ 17, Xi ” 22 03.8 +64 38 4.3 8" Cep 2 double star

ST786 O∑461 ADS

156 01

ST787 Lambda 2 2 0 6.1 -39.5 4.5 * Gru 21 star

ST788 Al Nair Alpha 22 08.2 -46 58 1.7 Stellar Gru 21 star

ST789 ∑2883 2 2 10.7 +70 07 5.7 15" Cep 2 double star

ST790 Zeta 22 10.9 +58.2 3.4 * Cep 21 star

ST791 h1746 ADS

15758

ST792 41 22 14.3 -21 04 5.3 5" Aqr 5 colored double star

ST793 1 22 16.0 + 3 7. 7 4 .1 * Lac 21 star

ST794 Alpha 22 18.5 -60.3 2.9 5’ Tuc 21 star

ST795 ∑2894 2 2 18.9 +37 46 6.1 16" Lac 5 colored double star

ST796 Pi 2 2 23.1 -45.9 5.8 2.7" Gru 2 double star

ST797 S 2 2 26.1 -48.4 6 * Gru 22 variable star

ST798 53 22 26.6 -16 4 5 6.4 3" Aqr 3 double star equal

ST799 Delta h5334 2 2 2 7. 3 -65.0 4.5 7" Tu c 2 double star

ST800 Kruger60 ADS

15972

ST801 Zeta 22 28.8 -00 01 4.3 2" Aqr 4 double star challenge

ST802 Delta 22 29.2 +58 25 3.8 20" Cep 5 colored double star

ST803 5 22 29.5 + 47.7 4.4 5’ Lac 21 star

ST804 Delta2 22 29.8 -43.7 4.1 15’ Gru 1 red variable star

ST805 ∑29 12 37 22 30.0 +04.4 5.8 1" Peg 4 double star challenge

ST806 Roe47 22 32.5 +39 46 5.8 43" Lac 7 quadruple star

ST807 8 22 35.9 +39 38 6.5 22" Lac 6 triple star

ST808 11 22 40.5 +44.3 4.5 * Lac 21 star

ST809 Beta 22 42.7 -46.9 2.1 * Gru 21 star

ST810 Tau1 69 22 47.7 -14.1 5.7 23" Aqr 2 double star

ST811 ∑2947 ADS

16291

ST812 Tau2 71 22 49.6 -13 .6 4 40’ Aqr 21 star

ST813 ∑2950 ADS

16317

ST814 h1823 22 51.8 +41 19 7.1 82" Lac 7 quadruple star

ST815 Lambda 73 22 52.6 -0 7. 6 3.7 * Aqr 21 star

22 03.9 +59.8 6.7 11.1" Cep 2 double star

22 13.9 +39.7 4.5 28" Lac 2 double star

magnitude

22 2 8 .1 + 5 7.7 9.8 3" Cep 2 double star

22 49.0 +68.6 7 4.3" Cep 2 double star

22 51.4 +61.7 6 .1 1.7" Cep 2 double star

Number Name Other RA Dec Mag Sep Con Code

ST816 Fomalhaut Alpha 2 2 5 7. 6 -29 37 1.2 * PsA 21 star

ST817 52 ADS

16428

ST818 Scheat Beta 23 03.8 + 28.1 2.4 * Peg 21 star

ST819 Dunlop246 23 07. 2 -50.7 6.1 9" Gru 2 double star

ST820 ∑2978 2 3 0 7. 5 +32 49 6.3 8" Peg 2 double star

ST821 Pi ADS

16538

ST822 Phi 90 23 14.3 -06.0 4.2 * Aqr 1 red variable star

ST823 Psi3 23 19.0 -09.6 5 1.5" Aqr 2 double star

ST824 94 23 19.1 -13 28 5.1 13 " Aqr 5 colored double star

ST825 Dunlop249 23 23.9 -53.8 6.5 27" Gru 2 double star

ST826 99 23 26.0 -20.6 4.4 * Aqr 21 star

ST827 Z 23 33.7 +48 49 8 Stellar And 22 variable star

ST828 Errai Gamma 23 39.3 +77.6 3.2 * Cep 21 star

ST829 Theta Dunlop

251

ST830 R 23 43.8 -15 17 5.8 Stellar Aqr 22 variable star

ST831 107 23 46.0 -18 41 5.3 7" Aqr 3 double star equal magni-

ST832 TX 19 23 46.4 +03 29 6.9 Stellar Psc 1 red variable star

ST833 ∑3042 23 51.8 +37 53 7.8 5" And 3 double star equal magni-

ST834 Lal192 23 54.4 -27 03 6.9 7" Scl 2 double star

ST835 R 23 58.4 +51 24 4.7 Stellar Cas 22 variable star

ST836 Sigma 23 59.0 +55 45 4.9 3" Cas 5 colored double star

ST837 ∑3050 23 59.5 +33 43 6.6 1.5" And 4 double star challenge

22 59.2 +11.7 6.1 0.7" Peg 4 double star challenge

23 07.9 +75.4 4.6 1. 2" Cep 4 double star challenge

23 39.5 -46.6 6.6 4" Phe 2 double star

tude

One-Year Limited Warranty

The Orion StarBlast 6 and StarBlast 6i Reflector Telescopes are warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. Proof of purchase (such as a copy of the original receipt) is required.

This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. For further warranty service information, contact: Orion Customer Service (800) 676-1343; support@telescope.com.

Orion Telescopes & Binoculars

89 Hangar Way, Watsonville CA 95076

Customer Support Help Line (800) 676-1343 • Day or Evening

Orion Starblast 6I, Starblast 6 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual