Celestron CGEM DX Mount and Tripod Computerized Telescope CGEM DX Mount Manual
Celestron CGEM DX Mount and Tripod Computerized Telescope Manual
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Celestron CGEM DX Mount and Tripod Computerized Telescope manual content summary:
- Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 1
CGEM DX Computerized Mount INSTRUCTION MANUAL ENGLISH - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 2
the Counterweight Bar 4 Installing the Counterweight 4 Attaching the Hand Control Holder 5 Attaching an Optical Tube to the Mount 5 Moving the Telescope Manually 5 Balancing the Mount in R.A 5 Balancing the Mount in DEC 6 Adjusting the Mount 6 Adjusting the Mount in Altitude 6 Adjusting the - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 3
a few observing sessions to become familiar with your mount, so you should keep this manual handy until you have fully mastered your telescope's operation. The hand control has built-in instructions to guide you through all the alignment procedures needed to have the telescope up and running in - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 4
D E 8 7 6 5 1 2 3 4 A C B Mount 1. Equatorial Mount 2. Latitude Adjustment Knob 3. Tripod 4. Hand Control Figure 2-1 - CGEM DX Mount 5. Tripod Center Leg Brace/Accessory Tray 6. Counterweight(s) 7. Counterweight Bar 8. Telescope Mounting Platform Control Panel A. On/Off Switch B. 12v - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 5
mount you must start with the tripod and work up from there. These instructions are laid out in the order each task should be performed. Setting up with an all metal center leg brace / accessory tray to give rock solid support to the mount. The tripod comes fully assembled with a metal plate, called - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 6
Tripod Mounting Adapter Tripod Head 4. Thread the counterweight bar into the opening until tight. 5. Tighten the counterweight bar lock nut fully for added support. Once the bar is securely in place you are ready to attach the counterweight. Since the fully assembled telescope can be quite heavy - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 7
Tighten the screw on the counterweight to hold it in place. While the above instructions describe a perfect balance arrangement, there should be a SLIGHT imbalance to ensure Figure 2-7 Moving the Telescope Manually In order to properly balance your telescope, you will need to move your telescope - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 8
telescope in place. Like R.A. balance, these are general balance instructions and will reduce undue stress on the mount. When taking the mount in right ascension and declination, as described earlier in this manual. Powering the Mount The telescope mount can be powered by the supplied - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 9
2. Align: Instructs the telescope to use a selected star or object as an alignment position. 3. Direction Keys: Allows complete control of the telescope in any direction. Use the - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 10
to begin the alignment process. 2. The hand control will ask the user to set the mount to its index position. Move the telescope mount, either manually or with the hand control, so that the index marked in both R.A. and Dec are aligned (see Fig 3-2). Press Enter to continue. • The hand control - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 11
align the selected star with the cross hairs in the center of the finderscope. When centered in the finder, press ENTER. 3. The display will then instruct you to center the star in the field of view of the eyepiece. When the star is centered, press ALIGN to accept this star as - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 12
pointing accuracy of your telescope without having to re-enter addition information. • If you have used the computer assisted polar alignment method and have manually moved the mount, it may be necessary to re-align the mount for improved pointing accuracy. To replace an existing alignment star with - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 13
Limits in the Setup Procedures section of the manual). To activate the Tour mode, press the for accurate centering of objects in the eyepiece and photographic guiding. To change the speed rate of the motors: on the type of mount being used to support the telescope. The telescope has three different - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 14
either GoTo Sky Obj or Goto Land Obj and enter the number of the object you wish to select and press ENTER. The telescope will automatically retrieve and display the coordinates before slewing to the object. Save Sky Object Your telescope stores celestial objects to its database by saving its - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 15
to move in the eyepiece changes depending on which side of the Meridian the telescope tube is on. This can create confusion especially when guiding on a star when doing astrophotography. To compensate for this, the direction of the drive control keys can be changed. To reverse the button logic - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 16
the west side of the mount and pointing east. • Disable - This is the default setting, which instructs the mount to always swing around to the other side of the pier as required to view objects on limit set in the hand control. If this proves to be a problem, the direction that the telescope 14 - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 17
telescope's database to find the coordinates of a celestial object for a future or past dates you would need to turn the GPS off in order to manually enter a time other than the present. Turn On/Off RTC - Allows you to turn off the telescopes internal real time clock. When aligning, the telescope - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 18
database to find the coordinates of a celestial object for a future or past dates you would need to turn the RTC off in order to manually enter a time other than the present. Periodic Error Correction (PEC) - PEC is designed to improve photographic quality by reducing the amplitude of the worm - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 19
MENU TRACKING VIEW TIME -SITE SCOPE SETUP UTILITIES USER OBJECTS GET RA & DEC GOTO RA & DEC IDENTIFY PRECISE GOTO MODE RATE EQ NORTH EQ SOUTH SIDEREAL SOLAR LUNAR SETUP TIME -SITE ANTI -BACKLASH FILT ER LIMITS DIRECTION BUTTONS GOTO APPROACH AUTOGUIDE RATES OTA ORIENTATION MERIDIAN MOUNT - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 20
Astronomy Basics Up to this point, this manual covered the assembly and basic operation of your telescope. However, to understand your telescope more thoroughly, you need to know a little about the night sky. - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 21
The constant, mentioned above, is a relationship between your latitude and the angular distance the celestial pole is above the northern (or southern) horizon; The angular distance from the northern horizon to the north celestial pole is always equal to your latitude. To illustrate this, imagine - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 22
the celestial pole, you can simply point the polar axis of your telescope at Polaris. Although this is by no means perfect alignment, it does get you within one degree and is suitable for visual observing and short exposure piggyback photography. This must be done in the dark when Polaris is visible - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 23
Optional Accessories You will find that additional accessories enhance your viewing pleasure and expand the usefulness of your telescope. For ease of reference, all the accessories are listed in alphabetical order. SkySync GPS Accessory ( #93969) - Improve the accuracy of your initial star - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 24
Appendix A - Technical Specifications CGEM DX Mount Hand Control Motor: Type Max Slew Speed Software Precision Hand Control Ports Motor Ports Tracking Rates Tracking Modes Alignment Procedures Database Complete Revised NGC Catalog Complete Messier Catalog Complete IC Catalog Complete Caldwell Abell - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 25
Aperture Apparent Magnitude Arc minute Arc second Asterism Asteroid Astrology Astronomical unit (AU) Aurora Azimuth B - Binary Stars C - Celestial Equator Celestial pole Celestial Sphere Collimation The diameter of a telescope's primary lens or mirror; the larger the aperture, the greater the - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 26
Messier N - Nebula North Celestial Pole Nova O - Open Cluster P - Parallax Parfocal Parsec Point Source R - Reflector A French astronomer in the late 1700's who was primarily looking for comets. Comets are hazy diffuse objects and so Messier cataloged objects that were not comets to help his search - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 27
Appendix C - RS-232 Connection Description Echo Goto Azm-Alt Goto Ra-Dec Get Azm-Alt Get RA-Dec Cancel Goto Is Goto in Progress Is Alignment Complete Commands below available on version 1.6 or later HC version Stop/Start Tracking 32-bit goto RA-Dec 32-bit get RA-Dec Commands below available on - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 28
Additional RS232 Commands Send Any Track Rate Through RS232 To The Motor Control 1. Multiply the desired tracking rate (arcseconds/second) by 4. Example: if the desired trackrate is 150 arcseconds/second, then TRACKRATE = 600 2. Separate TRACKRATE into two bytes, such that (TRACKRATE = TrackRateHigh - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 29
Appendix D - Maps Of Time Zones 27 - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 30
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Sky Maps 29 - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 32
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to modify or discontinue, without prior notice to you, any model or style telescope. If warranty problems arise, or if you need assistance in using your telescope contact: Celestron Customer Service Department 2835 Columbia Street • Torrance, CA 90503 U.S.A. Tel. (310) 328-9560 • Fax. (310) 212-5835 - Celestron CGEM DX Mount and Tripod Computerized Telescope | CGEM DX Mount Manual - Page 38
www.celestron.com 2835 Columbia Street • Torrance, CA 90503 U.S.A. Telephone: 310.328.9560 • Fax: 310.212.5835 ©2011 Celestron All rights reserved. • Printed in China • 01-11 91528-INST • $10.00 (Product design and specifications are) subject to change without prior notification.)
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INSTRUCTION MANUAL
CGEM DX C
OMPUTERIZED
M
OUNT
ENGLISH