SKY-WATCHER LightChariot 80AR-AZ, LightChariot 102AR-AZ, LightChariot 130N-AZ Instruction Manual

INSTRUCTION MANUAL
8 0AR -AZ
10 2 AR- A Z
130 N - A Z
LightChariot
w w w . s k y w a t c h e r u s a . c o m
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Assembling the LightChariot™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Attaching the Mount to the Tripod.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
The Diagonal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Focusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
RedDot Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
HAND CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Powering the LightChariot™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hand Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Astro-Tri-Align . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Auto Two-Star Align . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
One-Star Align . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Solar System Align . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SynScan™ Re-Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Object Catalog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Tour Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Direction Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Tracking Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Get R.A./DEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
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TABLE OF CONTENTS ... continued
Utility Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
TELESCOPE BASICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Focusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Image Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Calculating Magnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Determining Field of View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
General Observing Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CELESTIAL OBSERVING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Observing the Planets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Planetary Observing Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Solar Observing Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Seeing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
TELESCOPE MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Care and Cleaning of the Optics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
APPENDIX A – TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
APPENDIX B – GLOSSARY OF TERMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
APPENDIX C – RS-232 CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
APPENDIX D – STANDARD TIME ZONES OF THE WORLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
SKY MAPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
March - April Sky Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
May - June Sky Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
July - August Sky Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
September - October Sky Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
November - December Sky Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
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INTRODUCTION
Congratulations on your purchase of the Sky-Watcher USA LightChariot™! The LightChariot™ ushers in a whole new generation of computer automated technology. Simple and friendly to use, the LightChariot™ is up and running after locating just three bright objects. It’s the perfect combination of power and portability. If you are new to astronomy, you may wish to start off by using the LightChariot™’s built-in Sky Tour feature, which commands the LightChariot™ to find the most interesting objects in the sky and automatically slews to each one. Or if you are an experienced amateur, you will appreciate the comprehensive database of over 4,000 objects, including customized lists of all the best deep-sky objects, bright double stars and variable stars. No matter at what level you are starting out, the LightChariot™ will unfold for you and your friends all the wonders of the Universe.
Some of the many standard features of the LightChariot™ include:
• Incredible 4°/second slew speed.
• Fully enclosed motors and optical encoders for position location.
• Computerized hand controller with 4,000 object database.
• Storage for programmable user defined objects; and
• Many other high performance features!
The LightChariot™’s deluxe features combined with Sky-Watcher USA’s legendary optical standards give amateur astronomers one of the most sophisticated and easy to use telescopes available on the market today.
Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your LightChariot™, so you should keep this manual handy until you have fully mastered your telescope’s operation. The LightChariot™ hand control has built-in instructions to guide you through all the alignment procedures needed to have the telescope up and running in minutes. Use this manual in conjunction with the on-screen instructions provided by the hand control. The manual gives detailed information regarding each step as well as needed reference material and helpful hints guaranteed to make your observing experience as simple and pleasurable as possible.
Your LightChariot™ telescope is designed to give you years of fun and rewarding observations. However, there are a few things to consider before using your telescope that will ensure your safety and protect your equipment.
WARNING
• NEVER LOOK DIRECTLY AT THE SUN WITH THE NAKED EYE OR WITH A TELESCOPE (UNLESS YOU HAVE THE PROPER SOLAR FILTER). PERMANENT AND IRREVERSIBLE EYE DAMAGE MAY RESULT.
• Never use your telescope to project an image of the sun onto any surface. Internal heat build-up can damage the telescope and any accessories attached to it.
• Never use an eyepiece solar filter or a Herschel wedge. Internal heat build-up inside the telescope can cause these devices to crack or break, allowing unfiltered sunlight to pass through to the eye.
• Never leave the telescope unsupervised, either when children are present or adults who may not be familiar with the correct operating procedures of your telescope.
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80AR-AZ
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1
7
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L I G H T C H A R I O T 8 0 A R - A Z R E F R A C T O R T E L E S C O P E
1 Eyepiece 2 RedDot Finderscope 3 Optical Tube 4 80mm Objective Lens (inside) 5 Dew Shield 6 910mm Optical Focal Length 7 Mount 8 Battery Pack 9 Accessory Tray 10 Aluminum Tripod 11 SynScan Computer Hand Controller 12 Focuser 13 Diagonal
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6
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102AR-AZ
3
2
1
6
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L I G H T C H A R I O T 1 0 2 A R - A Z R E F R A C T O R T E L E S C O P E
1 Eyepiece 2 RedDot Finderscope 3 Optical Tube 4 102mm Objective Lens (inside) 5 Dew Shield 6 600mm Optical Focal Length 7 Mount 8 Battery Pack 9 Accessory Tray 10 Aluminum Tripod 11 SynScan Computer Hand Controller 12 Focuser 13 Diagonal
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130N-AZ
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L I G H T C H A R I O T 1 3 0 N - A Z R E F L E C T O R T E L E S C O P E
1 Secondary Mirror 2 RedDot Finderscope 3 Eyepiece 4 1.25" Focuser 5 Optical Tube 6 130mm Primary Mirror (inside) 7 650mm Optical Focal Length 8 Accessory Tray 9 Aluminum Tripod 10 SynScan Computer Hand Controller 11 Battery Pack 12 Mount
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ASSEMBLY
Assembling the LightChariot™
Your LightChariot™ comes in three major sections: the optical tube, fork arm and the tripod. These sections can be attached in seconds using the quick release coupling screw located under the tripod mounting platform. Remove all of the accessories from their individual boxes. Remember to save all of the containers so that they can be used to transport the telescope. Before attaching the visual accessories, the telescope tube should be mounted to its tripod. First, install the accessory tray onto the tripod legs:
1. Remove the tripod from the box and spread the legs apart until the center leg brace is fully extended.
2. Locate the accessory tray, and place it on top of the tripod center support brace in between the tripod legs. (FIG. 1)
3. Insert the locking bolt from underneath the tripod support brace and thread it into the hole in the center of the accessory tray. Do not over tighten.
FIG. 1
The accessory tray has a built-on hand control holder protruding from the side. The back of the hand control has an opening that slides over the clip on the inside of the holder.
It is a good idea to adjust the height of the tripod before attaching the fork arm and tube. Minor adjustments can be made later. To adjust the height of the tripod legs:
1. Loosen the tripod leg locking bolt located on the side of each leg. (FIG. 2)
2. Slide the inner portion of each leg down 6" to 8" inches.
3. Tighten the tripod locking bolts to hold each leg in place.
FIG. 2
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Attaching the Mount to the Tripod
With the tripod properly assembled, fork arm can easily be attached using the quick release coupling screw located underneath the tripod mounting platform:
1. Hold the telescope tube assembly by the fork arm and place the fork arm base inside the tripod mounting platform.
2. Thread the coupling screw into the hole at the bottom of the fork arm base and hand tighten.
(FIG. 3)
FIG. 3
Attaching the Telescope Tube to the Mount
Locate the dovetail bar on the optical tube. Slide the dovetail bar into the clamp on the mount and tighten it. (FIG. 4)
Your LightChariot™ is fully assembled and is ready to attach the accessories.
Dovetail bar
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FIG. 4
The Diagonal
The diagonal diverts the light at a right angle from the light path of the telescope. For astronomical observing, this allows you to observe in positions that are more comfortable than if you were to look straight through (FIG. 4). To attach the diagonal:
1. Turn the thumbscrew on the eyepiece adapter at the end of the focuser barrel until it no longer extends into (i.e., obstructs) the inner diameter of the focus barrel. Remove the protective dust cap from the focuser barrel.
2. Slide the chrome portion of the diagonal into the eyepiece adapter.
3. Tighten the thumbscrew on the eyepiece adapter to hold the diagonal in place.
If you wish to change the orientation of the diagonal, loosen the thumbscrew on the eyepiece adapter until the diagonal rotates freely. Rotate the diagonal to the desired position and tighten the thumbscrew.
Eyepiece
Diagonal
Eyepiece Adapter
Focuser
RedDot Finderscope
FIG. 4
The Eyepiece
The eyepiece, or ocular, is the optical element that magnifies the image focused by the telescope. The eyepiece fits either directly into the focuser or into the diagonal. To install the eyepiece:
For LightChariot™ models 80AR-AZ and 102AR-AZ:
1. Loosen the thumbscrew on the diagonal so it does not obstruct the inner diameter of the eyepiece end of the diagonal. Remove the protective dust cap from the diagonal’s barrel.
2. Slide the chrome portion of the low power 25mm eyepiece (20mm for the LightChariot™ model) into the diagonal.
3. Tighten the thumbscrew to hold the eyepiece in place.
To remove the eyepiece, loosen the thumbscrew on the diagonal and slide the eyepiece out.
FIG. 5
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For LightChariot™ model 130N-AZ:
1. Loosen the thumb screw on the eyepiece adapter at the end of the focuser barrel and remove the protective dust cap from the focuser barrel.
2. Slide the chrome portion of the low power 25mm eyepiece into the eyepiece adapter.
3. Tighten the thumbscrew to hold the eyepiece in place. (FIG. 6)
To remove the eyepiece, loosen the thumbscrew on the eyepiece barrel and slide the eyepiece out.
FIG. 6
Eyepieces are commonly referred to by focal length and barrel diameter. The focal length of each eyepiece is printed on the eyepiece barrel. The longer the focal length (i.e., the larger the number) the lower the eyepiece power or magnification; and the shorter the focal length (i.e., the smaller the number) the higher the magnification. Generally, you will use low-to-moderate power when viewing. For more information on how to determine power, see the section on “Calculating Magnification.”
Barrel diameter is the diameter of the barrel that slides into the diagonal or focuser. The LightChariot™ uses eyepieces with a standard 1-1/4" barrel diameter.
Focusing
To focus your telescope, simply turn either of the focus knobs at the eyepiece end of the optical tube. Turn the focus knob until the image is sharp. Once sharp, turn the knob towards you to focus on an object that is closer than the one you are currently observing. Turn the knob away from you to focus on a more distant object than the one you are currently observing.
The RedDot Finderscope
The RedDot Finderscope is the quickest and easiest way to point your telescope exactly at a desired object in the sky (FIG. 7). It’s like having a laser pointer that you can shine directly onto the night sky. The RedDot Finderscope is a zero magnification pointing tool that uses a coated glass window to superimpose the image of a small red dot onto the night sky. While keeping both eyes open when looking through the RedDot Finderscope, simply move your telescope until the red dot, seen through the RedDot Finderscope, merges with the object as seen with your unaided eye. The red dot is produced by a light-emitting diode (LED); it is not a laser beam and will not damage the glass window or your eye. The RedDot Finderscope comes equipped with a variable brightness control, two axes alignment control and mounting brackets. Before the RedDot Finderscope is ready to be used, it must be attached to the telescope tube and properly aligned:
RedDot Finderscope Installation
For LightChariot™ models 80AR-AZ and 102AR-AZ:
1. Slide the RedDot Finderscope bracket into the dovetail mounting platform on top of the focuser assembly.
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Altitude
Adjustment
Control
Sight Tube
ON/OFF
Brightness
Control
Azimuth Adjustment Control
Dovetail Tightening Screws
RedDot Finderscope
FIG. 7
2. Orient the RedDot Finderscope so that the sight tube is facing towards the front of the tube.
3. Secure the RedDot Finderscope bracket by tightening the thumb screw on the mounting platform.
For LightChariot™ model 130N-AZ:
1. Remove the nuts from the studs where the RedDot Finderscope will mount.
2. Mount the RedDot Finderscope bracket by placing the bracket over the studs protruding from the tube and tightening it down with the supplied nuts. Orient the RedDot Finderscope so that the sight tube is facing towards the front of the tube.
RedDot Finderscope Operation
The RedDot Finderscope is powered by a long life 3-Volt lithium battery (#CR2032) located underneath the front portion of the RedDot Finderscope. Like all finderscopes, the RedDot Finderscope must be properly aligned with the main telescope before it can be used. This is a simple process using the azimuth and altitude control knobs located on the side and bottom of the RedDot Finderscope. The alignment procedure is best done at night since the LED dot will be difficult to see during the day. Note: Before using the RedDot Finderscope, you must first remove the protective plastic cover over the battery.
1. To turn on the RedDot Finderscope, rotate the variable brightness control clockwise until you here a “click”. To increase the brightness level of the red dot, continue rotating the control knob about 180º until it stops.
Remember to remove the plastic cover over the battery, and always turn the power off after you have
found an object. This will extend the life of both the battery and the LED.
2. Locate a bright star or planet and center it in a low power eyepiece in the main telescope.
3. With both eyes open, look through the glass window at the alignment star.
If the RedDot Finderscope is perfectly aligned, you will see the red LED dot overlap the alignment
star. If the RedDot Finderscope is not aligned, take notice of where the red dot is relative to the bright star.
4. Without moving the main telescope, turn the RedDot Finderscope’s azimuth and altitude alignment controls until the red dot is directly over the alignment star.
If the LED dot is brighter than the alignment star, it may make it difficult to see the star. Turn the variable brightness control counterclockwise, until the red dot is the same brightness as the alignment star. This will make it easier to get an accurate alignment. The RedDot Finderscope is now ready to be used.
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HAND CONTROL
Attaching the Hand Control
The SynScan™ computer hand controller has a phone jack type connector at the end of its cord (FIG.8). Plug the phone jack connector into the outlet at the base of the telescope’s fork arm. Push the connector into the outlet until it clicks into place and place the hand control into its holder as described previously in the Assembly section of the manual.
Hand Controller Outlet
Battery Pack Outlet
ENTER
UNDO
ALIGN
M
MENU
CALD
1
3
2
NGC
UP
PLANET
4
6
5
STAR
DOWN
LIST
7
9
8
INFO
RATE
TOUR
0
Battery Pack
FIG. 8
Powering the LightChariot™
The LightChariot™ can be powered by the supplied battery pack or an optional 12V AC adapter. The power pack requires 8 user supplied AA size alkaline batteries. To power the LightChariot™, insert the batteries into the battery pack and plug the round post into the 12V outlet located on the side of the fork arm (FIG.8). Once the battery pack is plugged in, the LightChariot™ will power on and the hand control will display the message “LightChariot Ready”.
In case of a loss of power, the optical tube can be moved by hand. However, when powered on,
the telescope should always be controlled via the hand control. The LightChariot™ will lose its star alignment if moved by hand when powered on.
The Hand Control
The SynScan™ computer hand controller is designed to give you instant access to all the functions the LightChariot™ has to offer (FIG.9). With automatic slewing to over 4,000 objects, and common sense menu descriptions, even a beginner can master its variety of features in just a few observing sessions. Below is a brief description of the individual components of the SynScan™ computer hand controller:
1. Liquid Crystal Display (LCD) Window: Has a dual-line, 16 character display screen that is backlit
for comfortable viewing of telescope information and scrolling text.
2. Align: Instructs the LightChariot™ to use a selected star or object as an alignment position.
3. Direction Keys: Allows complete control of the LightChariot™ in any direction. Use the direction
keys to center objects in the RedDot finderscope and eyepiece.
4. Catalog Keys: The SynScan™ has a key on the hand control to allow direct access to each of
the catalogs in its 4,000+ object database. The SynScan™ contains the following catalogs in its database:
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Messier – Complete list of all Messier objects. NGC – Many of the brightest deep sky objects from the Revised New General Catalog.
Caldwell – A combination of the best NGC and IC objects.
Planets – All 8 planets in our Solar System plus the Moon. Stars – A compiled list of the brightest stars from the SAO catalog. List – For quick access, all of the best and most popular objects in the LightChariot
database have been broken down into lists based on their type and/or common name:
Named Stars Common name listing of the brightest stars in the sky. Named Objects Alphabetical listing of over 50 of the most popular deep
sky objects. Double Stars Alphabetical listing of the most visually stunning double,
triple and quadruple stars in the sky.
Variable Stars Select list of the brightest variable stars with the shortest
period of changing magnitude.
Asterisms A unique list of some of the most recognizable star patterns
in the sky.
1
7
2
ALIGN
ENTER
UNDO
8
3
M
1
NGC
PLANET
4
4
STAR
7
INFO
CALD
2
5
LIST
8
TOUR
MENU
3
UP
6
DOWN
9
RATE
0
9
10
11
5
6
12
FIG. 9SynScan™ Computer Hand Controller
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5. Info: Displays coordinates and useful information about objects selected from the SynScan™
database.
6. Tour: Activates the tour mode, which seeks out all the best objects for a given month and
automatically slews the LightChariot™ to those objects.
7. Enter: Pressing Enter allows you to select any of the SynScan™ functions, accept entered
parameters and slew the telescope to displayed objects.
8. Undo: Undo will take you out of the current menu and display the previous level of the menu
path. Press Undo repeatedly to get back to a main menu or use it to erase data entered by mistake.
9. Menu: Displays the many setup and utilities functions such as tracking rate and user defined
objects and many others.
10. Scroll Keys : Used to scroll up and down within any of the menu lists. A double arrow symbol
on the right side of the LCD indicates that the scroll keys can be used to view additional information.
11. Rate: Instantly changes the rate of speed of the motors when the direction buttons are
pressed.
12. RS-232 Jack: Allows use with a computer and software programs for point and click slewing
capability.
Hand Control Operation
This section describes the basic hand control procedures needed to operate the LightChariot™. These procedures are grouped into three categories: Alignment, Setup and Utilities. The alignment section deals with the initial telescope alignment as well as finding objects in the sky; the setup section discusses changing parameters such as tracking mode and tracking rate; finally, the last section reviews all of the utility functions such as adjusting the telescopes slew limits and backlash compensation.
Alignment Procedure
In order for the LightChariot™ to accurately point to objects in the sky, it must first be aligned with two known positions (stars) in the sky. With this information, the telescope can create a model of the sky, which it uses to locate any object with known coordinates.
Altazimuth” or “Alt-Az” refers to a type of mounting that allows a telescope to move in both altitude (up and down) and azimuth (left and right) with respect to the ground. This is the simplest form of mounting in which the telescope is attached directly to a tripod.
Alignment Procedure
In order for the LightChariot™ to accurately point to objects in the sky, it must first be aligned to known positions (stars) in the sky. With this information, the telescope can create a model of the sky, which it uses to locate any object with known coordinates. There are many ways to align the LightChariot™ with the sky depending on what information the user is able to provide: Astro-Tri-Align™ uses your current date, time and city to create an accurate model of the sky. Then the user can simply point the telescope to any three bright celestial objects to accurately align the telescope with the sky. Auto Two-Star Align will ask the user to choose and center the first alignment star, then the SynScan™ will automatically select and slew to a second star for alignment. Two-Star Alignment requires the user to identify and manually slew the telescope to the two alignment stars. One-Star Align is the same as Two-Star Align however only requires you to align to one known star. Although not as accurate as the other alignment methods, One-Star Align is the quickest way to find and track bright planets and objects in Altazimuth
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