Meade DS-2090 User Manual

Instruction Manual

DS-2000 Series Reflecting and Refracting Telescopes

MEADE.COM

Refracting Telescopes use a large objective lens as their primary

Eyepiece

2-Element Objective Lens

Eyepiece

Concave Mirror

Secondary Mirror

light-collecting element. Meade refractors, in all models and apertures, include achromatic (2-element) objective lenses in order to reduce or virtually eliminate the false color (chromatic aberration) that results in the telescopic image when light passes through a lens.

Reflecting Telescopes use a concave primary mirror to collect light and form an image. In the Newtonian type of reflector, light is reflected by a small, flat secondary mirror to the side of the main tube for observation of the image.

Refracting Telescope

In the refracting telescope, light is collected by a 2-element objective lens and brought to a focus at F.

Reflecting Telescope

In contrast, the reflecting telescope uses a concave mirror for this purpose.

WARNING!

Never use a Meade®Telescope to look at the Sun! Looking at or near the Sun will

cause instant and irreversible damage to your eye. Eye damage is often painless, so there is no warning to the observer that damage has occurred until it is too late. Do not point the telescope or its viewfinder at or near the Sun. Do not look through the telescope or its viewfinder as it is moving. Children should always have adult supervision while observing.

CAUTION:

Use care to install batteries as indicated by the battery compartment. Follow battery manufacturer's precautions. Do not install batteries backward or mix new and used batteries. Do not mix battery types. If these precautions are not followed, batteries may explode, catch fire, or leak. Improperly installed batteries void your Meade warranty.

If you are anxious to use your DS Astro Telescope for the first time, before a thorough reading of this instruction manual, see the QUICK-START GUIDE on page 4.

IMPORTANT NOTE: DS-2000EC users

for information about your supplied Electronic Controller. Autostar information does not apply.

DS-2000EC users may obtain the #494 Autostar handbox as an optional accessory. See page 40 for more information.

® The name “Meade,” “AutoStar,” and the Meade logo are

ademarks registered with the U.S. Patent Office and in

™ “LPI” and “Tonight’s Best” are trademarks of Meade Instruments Corporation.

atents:

P US 6,392,799 Other Patent Pending

, see APPENDIX E, page 39,

uments Cor

poration.

CONTENTS

k-Start Guide .......................................................... 4

Quic

Telescope Features ...................................................... 7

Autostar Features .......................................................... 9

Getting Started ..............................................................11

acking List ..............................................................11

How to Assemble Your Telescope ............................11

Red Dot Viewfinder ..................................................12

Choosing an Eyepiece ............................................13

The Bar

Observing ......................................................................14

Observing by Moving the Telescope Manually..........14

Terrestrial Observing ................................................14

Observing Using Autostar's Arrow Keys ..................14

Slew Speeds ............................................................15

Observe the Moon ....................................................15

Astronomical Observing............................................15

To Track an Object Automatically ..............................15

Easy Two-Star Alignment ..........................................17

Two-Star Alignment ..................................................19

One-Star Alignment ..................................................19

Go To Saturn ............................................................19

Take a Guided Tour ..................................................19

Basic Autostar Operation................................................20

Autostar Navigation Exercise ....................................20

Entering Numbers and Text into Autostar ................21

Navigating Autostar ..................................................21

Adjusting the Speed of a Scrolling Message ............21

Menus and Menu Options ..............................................22

Complete Autostar Menu Structure ..........................22

Object Menu..............................................................22

Event Menu ..............................................................23

Glossar Utilities Men

Setup Menu ..............................................................25

Optional Accessories......................................................28

Caring for Your Telescope ..............................................29

Collimation

Meade Customer Service ........................................31

Specifications ............................................................32

Appendix A: Celestial Coordinates ................................34

Locating the Celestial Pole ......................................34

Appendix B:

Appendix C: Observing Satellites ..................................36

Appendix D: Training the Drive ......................................37

Appendix E: Appendix F: Appendix G: Electronic Controller

Optional #494 Autostar for DS-2000EC Users ........40

Basic Astronomy ............................................................41

low Lens ......................................................13

Alt/az Home Position ..........................................16

Moving Through Autostar’s Menus ......................16

Initializing Autostar ..............................................16

Observe a Star Using Automatic Tracking ..........17

..........................................................24

y Men

........

............................................................

................................................................

o Find Objects Not in the Database

y Replacement

Batter How to Manually Set the Time and Date ..38

................................

(DS-2000EC Users Only)..39

QUICK-START GUIDE

1. Open the tripod: Remove the tripod from the giftbox and stand vertically. Gently pull the legs apart to a fully open position. Turn the center tripod lock knob to secure and stabilize the tripod. Tighten to a firm feel.

tripod lock knob before collapsing the tripod at the end of your viewing session.

Caution: Make sure you loosen the

4 & 5

4. Remove 4 screws from the mounting arm shaft: Locate the four screws on the mounting

shaft. Remove the screws using a "+" (Phillips head) screwdriver.

5. Attach the cradle to the mounting arm: Line up the cradle with the mounting arm shaft. The cradle contains a molded "key" that fits into a slot on the shaft. Line up the key and the slot, and slide the cradle onto the shaft. This automatically lines up the mating threads on the cradle with the ones on the shaft. Replace the four screws you removed in step #4 into the mating threads as depicted in the diagram above.

2. Attach the mounting arm assembly: Place the mounting arm assembly into the tripod base. Reach underneath and thread the mounting knob through the tripod base and into the mounting

. Tighten to a firm feel only, do not

m assemb

ar overtighten. While observing, you may wish to slightly loosen this knob and rotate the mounting

m assembly with attached optical tube (

step #6 belo

) around the hor

ontal axis

see

3. Remove the optical tube assembly from the cradle rings:

shipped with the cradle rings attached. The rings need to be removed so they can be attached to the mounting arm. Loosen the cradle lock knob until you can open the cradle rings. Remove the optical tube assemb

The optical tube assembly is

ings

ly from the cr

adle r

6. Attach and balance the optical tube: Replace the optical tube into the cradle ring. Tighten the cradle rings lock knob so that it holds the optical tube loosely; do not tighten the cradle ring lock knob at this point.

ou find a position where the tube remains

until y horizontal ( Tighten the cradle rings lock knob to a firm feel.

Slide the tube bac

i.e., without tipping up and down).

k and forth

7a. Attach the 90° diagonal prism (refractor models

only, see inside front cover

the plastic dust cover from the eyepiece holder (A). Slide the tube of the diagonal prism (B) into the telescope’s eyepiece-holder and tighten the thumbscrews (C) to a firm feel only to secure.

Insert the eyepiece: Remove the supplied

7b.

25mm or 26mm eyepiece (D) from its container and place it in the diagonal prism ( els only; see Fig. 7a) or directly into the eyepiece holder (reflector models only; see Fig. 7b). Tighten the thumbscrews (F) to a firm feel only. Remove the dust cove tube assembly. Use the focus knobs (E) to bring objects into focus.

): Pull out to remove

refractor mod-

r from the end of optical

9. Connect Autostar: Be certain that the power switch (H) on the computer control panel is in the OFF position. Plug the coil cord of the Autostar Controller into the HBX port (I) puter panel; the red LED lights when power is supplied to the panel.

10. Change Speeds: Press the key prompted by Autostar to accept the Sun warning. You can now use the Arrow keys (J) to move the telescope up, down, right, or left. To change one of the telescope's nine slew speeds, briefly press the SPEED/? key (K). Each press decreases the slew speed down one level, and then will cycle back to the fastest speed.

w Speed:

Sle

Medium

Fast

. . .

Slow

. Turn on the com-

8. Insert batteries: Open the battery compartment by lifting the cover and pulling it away from the dr

ive base.

e the battery holder from the compartment

Remo and carefully lift the 9v connector out from the

ou replace the batter

er y

Whene

tment.

compar

, to saf

ies connector (G) from the batter removing the batteries.

Inser

holder battery slots of the battery holder. Connect the 9v connector plug to the batter replace the batter compartment. Replace the cover.

eguard the wires

t eight AA-siz

iented as shown on the diagram on the

, or

e batter

y holder bac

, disconnect the 9v

y holder bef

ies into the battery

y holder

k into the batter

ore

Carefully

11. Sight along the tube: Sight along the side of the

telescope's main tube to locate an object. Practice using the Autostar Arrow keys to center an object in the telescope's field of view.

If you wish to attach the red dot viewfinder, see

e 12.

If you wish to initialize Autostar, see page 16.

ou wish to align the telescope

If y

If you wish to use Autostar to GO TO Saturn, go

e 19.

to pa

, go to page 17.

Features of the DS-2000 Series telescopes are virtually identical. Certain features of your telescope may look different than, or be positioned slightly different than the one pictured here, but the functionality of the features is the same.

(not visible)

1. Focus Knob

2. Eyepiece Holder

3. 90° Diagonal Prism

(refractors only)

4. Eyepiece Holder

Thumbscrew

5. Eyepiece

6. Focus Lock Knob

Red Dot Viewfinder/Bracket

Red Dot

Viewfinder

Alignment Screws

Compass/Bubble Level

10. Altitude Setting Circle

and Lock

11. Dew Shield

12. Dust Cap

13. Optical Tube

14. Cradle Ring Lock Knob

15. Cradle Ring

16. Mounting Arm and Shaft

17. Computer Control Panel

18. Accessory Tray

hment Bolts

Attac

19. Accessory Tray

k Knob

ripod Loc

20.

21. Tripod Leg Locks

ripod Legs

22.

23. Tripod Base

24. Azimuth Setting Circle

25. Battery Compartment

26. Base Lock Knob

Inner Suppor

27.

t Struts

Fig. 1d (Inset): Compass/Bubble Level.

Fig. 1b (Inset): (E) Altitude Setting Circle; (F) Altitude Lock.

A B

Fig. 1: DS-2000 Series Telescope.

Fig. 1c (Inset): Computer Control Panel. (A) Handbox port; (B) Power indicator light, (C)

(D) Auxiliary port.

witch;

ON s

TELESCOPE FEATURES

ake the time to become acquainted with all of these controls before attempting observations

T through the telescope.

A Focus Knob:

precise image focus. Rotate the focus knob clockwise to focus on distant objects, and coun-

kwise to focus on nearby objects.

tercloc

Moves the telescope’s focus drawtube in a finely-controlled motion

to achieve

2 Eyepiece Holder: Holds the eyepiece in place. On refractor models, also holds the 90°

diagonal prism in place.

3 90° Diagonal Prism (refractor models only): Holds the eyepiece upright for easy viewing.

Results in an upright, but reversed viewing of land objects.

epiece Holder Thumbscrew:Tightens the eyepiece in place.Tighten to a firm feel only.

4 Ey 5 Eyepiece: Place the supplied eyepiece into the eyepiece holder (reflector models only) or

the 90° Diagonal Prism ( screw (

4, Fig.1).

refractor models only, 3, Fig. 1) and tighten in place with thumb-

6 Focus Lock Knob: Designed to prevent the focuser drawtube from moving when a heavy

accessory, such as a camera, is attached to the focuser assembly. For normal observing with an eyepiece and diagonal prism, it is not necessary to use the lock knob.

Red Dot Viewfinder and Mounting Bracket: Provides an easier way to initially sight objects than the main telescope eyepiece which has a narrower field of view. side of the red dot viewfinder to turn on the device and to change the intensity of the red dot.

Slide the switch on the

8 Red Dot Viewfinder Alignment Screws: Adjust these screws to align the viewfinder. See

page 12 for more information.

9 Compass/Bubble Level: Compass will assist you in finding North. Bubble level can be

used to level the optical tube when setting the Home Position.

J Altitude Setting Circle and Lock

A) Altitude Setting Circle

B) Altitude Lock: Controls the manual vertical movement of the telescope. Turning

the Altitude lock counterclockwise unlocks the telescope enabling it to be freely tilted by hand on the vertical axis. Turning the Altitude lock clockwise (to a firm feel only) prevents the telescope from being moved manually and engages the vertical motor drive clutch for Autostar operation (

: Displays Altitude (vertical) coordinates (A, Fig. Ib).

B, Fig. Ib).

K Dew Shield: Reduces dew formation on the telescope's primary lens (refractor models only). L Dust Cap: Pull to remove the dust cap from the front lens of the telescope.

Note: The dust cap should be replaced and the power turned off to the telescope after each obser the observing session has evaporated before replacing the dust cap.

ving session.

Verify that any dew that might have collected during

M Optical Tube: The main optical component that gathers the light from distant objects and

brings this light to a focus for observation with the eyepiece.

N Cradle Ring Lock Knob: Tighten to a firm feel to hold the optical tube securely in place. O Cradle Ring: Holds optical tube in place. Attaches to the mounting arm shaft (16, Fig. 1) P Mounting Arm and Shaft: Holds the optical tube assemb

(

23, Fig. 1).

anel

Q Computer Contr

Handbo

Electronic Controller (EC models) into this por

B. LED: The red power indicator light illuminates when power is supplied to the con-

nected handbox and to the telescope’s motor drive.

C. ON Switch: Press to turn the Computer Control Panel and Autostar ON or OFF.

Note: Alw time.

uxiliary (AUX) Port

sories. See

ol P

x (HBX) P

ays remove the batteries if they are not to be used for a long period of

OPTIONAL ACCESSORIES, page 28.

(Fig.Ic)

Plug the #494 A

vides connection f

Pro

utostar handbo

or current and future Meade acces

ly. Attaches to the tripod base

T models) or

x (A

the

R Accessory Tray Attachment Bolts - Attach to wing nuts to fasten tray to the tripod. See

page 11 for more information.

Note: It is not necessary to remove the tray each time you collapse the tripod. The tray is designed to be collapsed with the legs.

S Accessory Tray - Conveniently holds extra eyepieces, Autostar handbox, and other acces-

sories.

V Tripod Lock Knob - Tighten to a firm feel to secure tripod legs.

Caution: Loosen the tripod lock knob before collapsing tripod at the end of a viewing session.

V Tripod Legs Locks (3) - Lift the lock up to loosen inner section of a tripod leg and extend

the inner leg to desired height. Press the lock down to lock the leg in place.

V Tripod Legs - Spread the legs out as far as they will open for a secure viewing platform.

V Tripod Base - Holds the mounting arm assembly (16, Fig. 1) in place.

V Azim

V Battery Compartment - Install eight user-supplied AA batteries in this compartment. See

V Base Lock Knob (not visible in photo) - Attaches mounting arm assembly to tripod base.

V Inner Support Struts (3) - Make the tripod more secure and stable.

uth Setting Circle -

page 12 for more information.

Loosen before moving the optical tube on the horizontal axis. See page 11 for more information.

ys Azimuth (horizontal) coordinates.

Displa

ystal Displa

Liquid Cr

2. ENTER Key

MODE K

4. GOTO Key

5. Arrow Keys

6, 7. Scroll Keys

Speed/? Key

Coil Cord

2: #494 Autostar Handbox.

Fig.

y (LCD)

DS-2000 TIPS

TE:

NO DS-2000EC users

, see APPENDIX E, page 39, for information about y

our supplied Electronic Controller. Autostar information does not apply.

DS-2000EC users

y obtain the #494

ma Autostar handbox as an optional accessory. See page 40 for more information.

AUTOSTAR FEATURES

The #494 Autostar controls the DS-2000AT Series Telescopes. Nearly all telescope operations are accomplished with just a few pushes of Autostar’s buttons. Some of the major features of Autostar are:

N Automatically move the telescope to any of the 1400 objects stored in the database or man-

ually enter the astronomical coordinates of any celestial object.

N Take a guided tour of the best celestial objects to view on any given night of the year.

N Access a glossary of astronomical terms.

N Calculate which eyepiece to use for optimum viewing of a celestial object.

The Autostar Computer Controller provides control of virtually every telescope operation.

utostar has soft-touch keys designed to have a positive feel. The LCD (Liquid Crystal Display)

A is backlit with a red LED (Light Emitting Diode) for easy viewing in the dark. The backlit display, key arrangement, and sequential database make Autostar extremely user friendly.

NOTE: Autostar does not require batteries; the telescope’s batteries supply power to Autostar.

1 2-Line LCD Display - Provides an visual interface between Autostar and the telescope.

Top line: Displays a menu.

•

Bottom line: Displays a menu option or information about an object or subject,

• depending on what operation is being performed.

2 ENTER Key - Selects a choice or accesses the next menu or level. This is similar to a

Return key on a computer. See

MENUS AND MENU OPTIONS, page 22.

NOTE: If ENTER is pressed and held for two seconds or more and then released, Autostar emits a beep and “ENTER to Sync” is displayed. "ENTER to Sync" can only be used after the telescope has been aligned and is pointing at an object. If the "ENTER to Sync" feature is accessed by mistake, press MODE to return to the previous screen. See

HIGH PRECISION, page 27, for more

details about this feature.

3 MODE Key - Returns to the previous

menu or level.The MODE key is similar to the ESCAPE key on a computer.

NOTE: Pressing MODE while in the “Select Item” level moves Autostar to the topmost screen: “Select Item:

”

Object.

If MODE is pressed and held

NOTE:

for two seconds or more, the following information displays :

• Azimuth and Altitude (astronomical) coordinates

• Altitude (vertical) and Azimuth (horizontal) coordinates

• Local Time and Local Sidereal Time (LST)

• Timer and Alarm Status

Press MODE again to return to the previous menu.

4 GO TO Key - Slews (moves) the tele-

scope to a selected object. While the

MOVING THROUGH AUTOSTAR'S MENUS, page 16 and

Join an Astronomy Club

Attend a Star Party

A fun way to learn more about astronomy is to join an astronomy club. Check your local newspaper, school, library, or telescope dealer to find out if there’s a club in your area.

At club meetings, you will meet other astronomy enthusiasts with whom you will be able to share your discoveries. Clubs are an excellent way to

n more about obser

lear where the best observing sites are, and to compare notes about telescopes, eyepieces, filters, tripods, and so forth.

Often, club members are excellent astrophotographers. Not only will you be able to see examples of their ar up some DS-2000 telescope.

Many groups also hold regularly scheduled Star

ties at which y

P with many different telescopes and other pieces of astronomical equipment. Magazines such as

Sky &

for many popular Star Parties around the United States and Canada.

t, but you may even be able to pick

ks of the tr

“tr

elescope

ving the sky, to find out

to try out on your

ade”

ou can chec

and Astronomypr

k out and obser

int schedules

DEFINITION:

Throughout this manual, you will notice the term "Alt/Az." Alt/Az

Fasten wingnuts

uth

)

t for

(shor just means that your telescope moves up and down and from side to side. Alt/Az is one of many methods used by amateur astronomers to locate celestial objects.

Fig. 3 Attach Tray to the tripod: Thread the wingnuts to the bolts (bottom view).

altazim

telescope is slewing, the operation may be aborted at any time by pressing any key except GO TO. Pressing GO TO again resumes the slew to the object.

The GO TO key also allows you to perform a " ing alignment after the telescope slews to an alignment star, but the star is not visible in the eyepiece when the telescope finishes its search. Press GO TO when the slew is finished and the telescope starts slewing in a spiral pattern at a very slow speed around the search area. Look through the eyepiece and when the object does become visible, press MODE to stop the spiral search. Then use the Arrow keys to center the object.

spiral search." A spiral search is useful dur-

5 Arrow Keys - Move the telescope in a specific direction (up, down, left, and right), at any

one of nine different speeds. Speed selection is explained in following operations are also available with the Arrow keys:

• Data Entry - Use the Up and Down Arrow keys to scroll through the letters of the alphabet and numerical digits. The Down Arrow key starts with the letter "A" and the Up Arrow key starts with the digit "9." The Left and Right Arrow keys are used to move the cursor left and right across the LCD display.

Alt/Az Alignment - Use the Up and Down Arrow keys to move the telescope ver-

• tically up and down. The Left Arrow key moves the telescope horizontally counterclockwise, while the Right Arrow key moves it clockwise.

SLEW SPEEDS, page 15. The

6,7 Scroll Keys - Allows you to scroll through menu options. The menu is displayed on the

top line of the screen and the options within the menu are displayed, one at a time, on the second line. Press and hold a Scroll key to move quickly through the options.

The Scroll keys also scroll through the letters of the alphabet and numerical digits.

NOTE: The Scroll Down key and the Down Arrow key move forward through the alphabet & digits (A to Z, 0 to 9). The Scroll Up key and the Up Arrow key move backward (Z to A, 9 to 0). Common symbols are also available in the list.

Tip: When a message is scrolling across the display, press and hold the Up Scroll key to increase the scrolling speed or press and hold the Down Scroll key to decrease the scrolling speed.

8 Speed/? Key - Pressing the Speed/? key cycles through the nine slew speeds that move

the telescope. Each time the Speed/? key is pressed briefly, the current slew speed is shown for about two seconds on the display. See

The Speed/? key also accesses the "Help" file. "Help" provides on-screen information on how to accomplish whatever task is currently active.

NOTE: Pressing the Speed/? key very briefly changes the slew speed. Holding down the Speed/? key longer (one to two seconds) accesses the Help function.

SLEW SPEEDS, page 15.

Fig. 4: Secure the tripod: turn the tripod lock knob.

Fig. 5: Attach the mounting arm to the tripod base.

If you have a question about an Autostar operation, e.g., INITIALIZATION, ALIGNMENT, etc., hold down the Speed/? key and follow the directions that scroll on the second line of

the LCD screen.

When a word appears in [brackets], press ENTER to access the Autostar Glossary. A definition or more detailed information is displayed. Press MODE to return to the scrolling Autostar Help display.

When satisfied with the Help provided, press MODE to return to the original screen and continue with the chosen procedure.

9 Coil Cor

telescope computer control panel.

(not sho

wn)

- Plug the A

utostar coil cord into the HBX por

t (

Fig.

) of the

Fig. 6: Attach cradle to mounting arm.

Fig. 7: Attach and balance the optical tube.

Fig. 8a: Attach the viewfinder bracket to the refractor optical tube assembly.

Fig. 8b: Attach the

wfinder br

vie reflector optical tube assembly.

et to the

GETTING STARTED

Packing List

Getting the telescope ready for first observations requires only a few minutes. When first opening the packing box, note carefully the parts listed on your giftbox.

How to Assemble Your Telescope

The telescope attaches directly to the tr “Altazimuth” (“Altitude-Azimuth,” or “vertical-horizontal”) format. The telescope in this configuration moves up and down and from side to side.

1. Open the tripod: After removing the field tripod from its shipping carton, stand the tripod vertically, with the tripod feet down and with the tripod still fully collapsed. Gently pull the legs apart to a fully open position.

Attach the tray to the tripod: Place the tray (19, Fig. 1) over the inner support strut that

2. contains two bolt holes. Line up the bolts holes on the tray with the bolt holes on the strut. Slide the two included bolts through the top of bolt holes ( with the included wing nuts on the bottom side of the tray (Fig. 3). Tighten to a firm feel only.

Note: The tray does not have to be removed when you collapse the tripod at the end of a viewing session— just loosen the tray’s center lock knob.

3. Secure the tripod: Turn the center tripod lock knob (Fig. 4) to help stabilize and secure the tripod.

Caution: Make sure that you loosen the tripod lock knob before collapsing the tripod.

4. Attach the mounting arm assembly to the tripod base: There are three pads in the tri- pod base ( allow the mounting arm assembly to move more easily inside the base.

Place the mounting arm assembly into the tripod base and continue to hold onto the arm assembly. With your other hand, reach underneath the base and thread the mounting lock knob ( firm feel only; do not overtighten. While observing, you may wish to loosen this knob and rotate the mounting arm assembly and optical tube (

Remove the optical tube assembly from the cradle rings: The optical tube assembly is

5. shipped with the cradle rings attached. The rings need to be removed before they can be attached to the mounting arm. Loosen the cradle lock knob ( the cradle rings. Remove the optical tube assembly (13, Fig. 1) from the cradle rings.

Remove 4 screws from the mounting arm shaft: Locate the four screws on the mount-

6. ing shaft. Remove the screws using a "+" (Phillips head) screwdriver. Set the screws aside.

7. Attac The cradle contains a molded "key" that fits into a slot on the shaft. Line up the key and the slot, and slide the cradle onto the shaft. This automatically lines up the mating threads on the cr the Phillips head screwdriver ( telescope so that it doesn't strike the base or pass beyond approximately 90° upright when you use the Autostar handbox.

Attach and balance the optical tube: Replace the optical tube into the cradle ring.Tighten

8. the cradle ring lock knob so that it holds the optical tube loosely; do not tighten the cradle ring lock knob at this point. Slide the tube back and forth until you find a position where the tube remains horizontal ( lock knob to a firm feel. See Fig. 7. Adjust the length of the tripod legs to a comfortable viewing height using the leg locks (21, Fig. 1).

9. Attach the red dot viewfinder: Using a Phillips head screwdriver, thread the two attachment screws in the bracket into the mating threads located on the optical tube.

Attac

10. dust cover from the eyepiece holder. Slide the tube of the diagonal prism (3, Fig. 1) into the telescope’ secure the diagonal pr

23, Fig. 1) and three pads on the mounting arm assembly (16, Fig. 1).These pads

26, Fig. 1) through the tripod base and into the mounting arm assembly. Tighten to a

h the cradle to the mounting arm:

adle with the ones on the shaft. Replace the four screws into the mating threads using

i.e., without slightly tipping up or down). Tighten the cradle rings

h the 90° diagonal prism (refractor models only):

epiece-holder (

s e

ism in place

ipod. The telescope in this way is mounted in an

18, Fig. 1) and tighten the bolts

see step #8) on the horizontal axis.

14, Fig. 1) until you can open

Line up the cr

Fig. 6). The key and slot on the shaft set limit stops for the

Fig.

) and tighten the thumbscre

adle with the mounting arm shaft.

Pull out to remo

ws (to a fir

ve the plastic

eel only) to

m f

Fig. 9: Attach the diagonal prism (1), tighten prism thumbscrews (2), insert the eyepiece (3), tighten eyepiece thumbscrews (4) (Refractor models).

Fig. 10: Insert the eyepiece (1) into the eyepiece holder (2), tighten eyepiece thumbscrew (3) (Reflector models).

11. Inser

t the eyepiece:

it in the diagonal prism ( (

2, Fig. 10, reflector models only). Tighten the thumbscrews (2 and 4, Fig. 9, refractor mod-

els only

fir

Insert batteries: The telescope’s battery compartment (1, Fig. 11) is located on top of the

12.

) to a firm feel only. Tighten the thumbscrew (3 , Fig. 10, reflector models only) to a

m feel only.

ve the supplied eyepiece (3,Fig. 9

Remo

) from its container and place

refractor models only; 1, Fig. 9) or directly into the eyepiece holder

drive base. Open the battery compartment by lifting the cover and pulling it away from the drive base.

Remove the battery holder from the compartment and carefully lift the 9v connector out from the compar

tment. Take care not to accidentally detach the wires of the battery connector from the base. Whenever you replace the batteries, to safeguard the wires, disconnect the 9v connector from the battery holder before removing the batteries.

Insert eight AA-size batteries into the battery holder, oriented as shown on the diagram on the battery slots of the battery holder. Connect the 9v connector plug to the battery holder. Carefully replace the battery holder back into the battery compartment. Replace the cover.

UTION:

Use care to install batter

ies as indicated by the battery compartment. Follow battery manufacturer's precautions. Do not install batteries backwards or mix new and used batteries. Do not mix battery types. If these precautions are not followed, batteries may explode, catch fire, or leak. Improperly installed batteries void your Meade warranty. Always remove the batteries if they are not to be used for a long period of time.

14. Connect Autostar: Be certain that the power switch on the computer control panel is in the OFF position. Plug the coil cord of the Autostar Controller into the HBX port the power switch; the red LED lights when power is supplied to the panel. See

. Turn on

Fig. 12.

NOTE: The Autostar handbox does not require batteries; the telescope’s batteries supply power to Autostar.

15. Remove the dust cover: Pull out the dust cover (12, Fig. 1) from the optical tube assem- bly (13, Fig. 1).

Assembly of the basic telescope is now complete.

Fig. 11: Insert eight AA-size batteries inside the battery

tment:

compar (1) Battery compartment (2) Battery holder (3) 9v connector

Fig. 12: Connect Autostar to the HBX port.

The Red Dot Viewfinder

Because the main telescope has a fairly narrow field of view, locating objects directly in the main telescope can sometimes be difficult. The red dot viewfinder (Fig. 13) projects a small red dot that permits you to more easily locate objects. When the red dot viewfinder and optical tube are aligned to each other, both point to the same position in the sky. An object located in the viewfinder is therefore in the eyepiece of the main telescope.

Aligning the Red Dot Viewfinder:

It is recommended that you perform steps 1 through 4 of this procedure during the daytime and step 5 at night.

1. Loosen the tripod base lock knob ( telescope can move freely.

2. If you have not already done so, place a low-power (e.g., 25mm) eyepiece in the diagonal prism of the main telescope ( object (

e.g., the top of a telephone pole or sign). Turn the focuser knob (1, Fig. 1) to focus

the image in the eyepiece. Center the object precisely.

3. Re-tighten the tripod base lock knob ( telescope does not move during the procedure.

4. Slide the intensity slider to the right to turn the red dot viewfinder On (by changing the slider’s position, you can change the intensity of the red dot; see viewfinder. Turn the viewfinder’s two alignment screws ( dot points precisely at the same object as centered in the e

wfinder is no

vie

w aligned to the main telescope

26, Fig. 1) and the Altitude lock (10, Fig. 1), so that the

3, Fig. 1) and point the telescope at an easy-to-find land

26, Fig. 1) and the Altitude lock (10, Fig. 1) so that the

Fig. 13). Looking through the

8, Fig. 1) until the viewfinder’s red

The red dot

epiece

DS-2000 TIPS

Intensity Slider

Fig. 13: Red Dot Viewfinder intensity slider. Slide the switch to the right to turn on the viewfinder. The switch provides two levels of intensity for the red dot.

NEVER point the telescope

directly at or near the Sun at any time! Observing the Sun, even for the smallest fraction of a second, will result in instant and irreversible eye damage, as well as physical damage to the telescope itself.

Fig. 15: 25mm and 9mm eyepieces.

5. Check this alignment on a celestial object, such as the Moon or a bright star, and make any necessary refinements.

Choosing an Eyepiece

A telescope’ focal length, expressed in millimeters, or “mm.”The smaller the focal length, the higher the magnification. For example, an eyepiece with a focal length of 9mm has a higher magnification than an eyepiece with a focal length of 25mm.

Your telescope comes supplied with a low-powered 25mm or 26mm eyepiece which gives a wide, comfortable field of view with high image resolution. Always begin your observations with this eyepiece.

w power eyepieces offer a wide field of view, bright, high-contrast images, and eye relief dur-

Lo ing long observing sessions. After an object is located and centered in the eyepiece, try switching to a higher power eyepiece to enlarge the image.

NOTE: Viewing conditions vary from night-to-night and from site-to-site. Turbulence in

the air, even on an apparently clear night, can distort images. If an image appears fuzzy and ill-defined, return to a lower power eyepiece for a more well-resolved image.

The power, or magnification of a telescope is determined by the focal length of the telescope and the focal length of the eyepiece being used. To calculate eyepiece power, divide the telescope's focal length by the eyepiece's focal length. For example, you may wish to use a 25mm eyepiece with the DS-2000 model DS-2114S. Look up the focal length of the DS-2114S under

SPECIFICATIONS: DS-2114S, page 32. The

focal length is listed as 1000mm.

Telescope focal length divided by Eyepiece focal length = Eyepiece power

s eyepiece magnifies the light gathered by the optical tube. Each eyepiece has a

Too Much Power?

1000 v 25 = 40

The eyepiece power, or magnification is therefore 40X (approximately).

The Barlow Lens

Some Meade telescopes include a power multiplier called a Barlow lens. Consisting of a lens mounted in a 4"-long (10cm) tube the Barlow doubles or triples the power

epiece is used alone. In

obtained when an e the example above, a 25mm eyepiece results in 40X magnification with the DS2114S telescope; is used in conjunction with a 2x Barlow lens, power is doubled to 80X. To use the Barlow,

t it into the diagonal pr

inser models only) or e the eyepiece.

ism (

yepiece

actor

refr

when this same e

epiece holder, followed by

Can you ever have too much power? If you’re referring to eyepiece power (magnification), yes, you can! The most common beginner’s mistake is to “overpower” a telescope by using too high of a magnification, which the telescope’s aperture and atmospheric conditions cannot reasonably support. Keep in mind that a smaller, but bright and well-resolved image is far superior to one that is larger, but dim and poorly resolved (see below). Powers above

200X should be emplo steadiest atmospheric conditions.

Autostar can calculate the best eyepiece for you to use.Try out the “Eyepiece Calc” feature in the Utilities men

Most observers should have three or four additional e of reasonable magnifications possible with the DS-2000 telescopes. See “OPTIONAL

CCESSORIES

epieces to achie

”

ed only under the

page 28.

ve the full range

14a & 14b:Jupiter

Fig.

magnification.

xample of too m

;

uch

tant Note:

Impor

you look through your telescope’ the image might look

ange at first.

str

ou have a

If y

telescope

appear right-side-up, but reversed left-for-right. This will not make a difference when observing astronomical objects, and in fact, all astronomical telescopes present inverted images.

During terrestrial observing, when a corrected image (rightside up and correct leftfor-right) is desirable, an optional Meade 45° Erecting Prism is available. See

ACCESSORIES, page 28,

or consult the Meade Telescope Catalog.

No means of correcting the image is available for reflecting telescopes— the image will appear upside down and reversed left-for-right.

When

s eyepiece,

refracting

, objects will

OPTIONAL

OBSERVING

Observing by Moving the Telescope Manually

ou wish to observe a distant land object, such as a mountain top or a bird, you can observe

If y by merely pointing the telescope and looking through the eyepiece.

1. Loosen the telescope’s tripod base lock knob ( that the telescope can move freely.

2. Point your telescope at distant street signs, mountains, trees, and other structures. Use your red dot viewfinder to help site-in on an object.

3. Center the object using the red dot viewfinder and then in the telescope eyepiece. When the object is centered in your eyepiece, re-tighten the base and Altitude locks.

4. Practice focusing objects with the focus knob (

5. Once you get a feel for how your telescope moves and focuses, try to view something more challenging, like a bird or a distant moving train.

You can also observe stars and objects in the night sky using this method, but note that objects begin to slowly drift across the eyepiece field.This motion is caused by the rotation of the Earth. As you become familiar with the Autostar handbox operation, you can counteract the drift using the automatic tracking feature in the Autostar Setup menu (see

MATICALLY, page 15), or by using Autostar's GO TO capabilities (see GO TO SATURN, page 19).

Terrestrial Observing

DS-2000 refracting telescopes are excellent high-resolution, terrestrial (land) telescopes (reflecting telescopes are designed primarily for astronomical observations). Viewing terrestrial objects requires looking along the Earth's surface through heat waves.These heat waves often cause degradation of image quality. Lower power eyepieces, such as a 25mm eyepiece, magnify these heat waves less than higher power eyepieces. Therefore, lower power eyepieces provide a steadier, higher quality image. If the image is fuzzy or ill-defined, reduce to a lower power eyepiece, where the heat waves do not have such an effect on image quality. Observing in early morning hours, before the ground has built up internal heat, produces better viewing conditions than during late afternoon hours.

Observing Using Autostar's Arrow Keys

You may observe land and astronomical objects using Autostar's Arrow keys to move the telescope.

1. Tighten the Altitude lock (

e sure the telescope power switch is in the OFF position. Plug Autostar into the HBX

Mak

2. port of the Control Panel.

3. Flip the telescope power switch to the ON position.

Autostar is activated and a copyright message displays briefly, followed by a short beep. Then Autostar takes a few moments to start up the system.

4. A message displays that warns not to look at the Sun. At the end of this message, press

y prompted by Autostar to signify that the message has been read and understood.

the k

ys are no

The Arro

5. telescope up

Press the SPEED/?

6. press this k

7. Use the red dot viewfinder ( Arro

8. Use the telescope’s focus knob (

w k

wn, right, or left.

, do

, the speed will change

ys to center the object in the telescope e

w k

10, Fig. 1) and tripod base lock knob (26, Fig. 1).

ated. Press the Arrow keys (

w activ

y (

Fig.

) to change the telescope’

. See

7, Fig. 1) to locate an object and practice using the Autostar’s

1, Fig. 1) to bring the object into focus.

26, Fig. 1) and Altitude lock (6, Fig. 1), so

1, Fig. 1).

TO TRACK AN OBJECT AUTO-

Fig.

w speed.

s sle

SLEW SPEEDS, page 15, f

epiece's field of view.

or more inf

) to sle

w (mo

Each time y

mation.

e) the

+ 30 hidden pages