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CGEM Computerized Mount

Item # 91526

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CGEM Series Computerized Telescopes

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$1,499.00
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Computerized German EquatorialAll-Star Polar Alignment Flash Upgradeable NexRemote

Quick Overview

Features

General Features

  • Holds a maximum instrument capacity of 40 lbs
  • CGEM Computerized Equatorial Mount
  • Ultra sturdy 2" steel tripod with Accessory Tray

Computerized Mount Features

  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • Proven NexStar computer control technology
  • Redesigned electronics deliver constant regulated power to the motors making them capable of driving the telescope even when not perfectly balanced
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • New "All-star" Polar alignment uses any bright star for a quick and accurate Polar alignment
  • Software Features include: Mount Calibration, Database Filter Limits, Hibernate, five Alignment Procedures, and user-defined slew limits
  • Meridian preference for slewing - allows you to approach an object from the side of the Meridian that maximizes tracking (and imaging) time
  • Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable stars; solar system objects and asterisms
  • Solar System alignment method - allows you to align your telescope and view the moon and planets during the day
  • Permanent Programmable Periodic Error Correction (PEC) - corrects for periodic tracking errors inherent to all worm drives
  • Custom Rate 9 feature allows you set maximum slew rate
  • Tandem mode allows you to star align the mount even when positioned for tandem scope use
  • Steel worm gear and 90 mm pitch diameter brass worm wheel
  • Drive Motors - Low Cog DC Servo motor with integrated optical encoders offer smooth, quiet operation and long life. The motor armatures are skewed to minimize cogging which is required for low speed tracking.
  • Internal Cable wiring for trouble-free setup and transportation
  • Designated six-pin RJ-12 modular jack, ST-4 compatible guide port
  • Autoguide port and Auxiliary ports located on the electronic plate for long exposure astrophotography
  • Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
  • RS-232 communication port on hand control to control the telescope via a personal computer
  • Includes NexRemote telescope control software, for advanced control of your telescope via computer
  • Precision machined 40 mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings
  • GPS-compatible with optional SkySync GPS Accessory

CGEM Computerized Mount

Multimedia Gallery

  • CGEM Computerized Mount - 360 Degree View
  • PATS 2009 Coverage

Awards

Hot Product 2010

Details

The CGEM™ mount has a fresh, attractive, bold appearance and is capable of carrying Celestron’s higher-end SCT optical tubes (up to 11") securely and vibration free, which is ideal for both imaging and visual observing. Capable of holding over 40 lbs of payload and slewing at 5° per second, you will be able to instantly point to any of the celestial objects in the database.

Ergonomic Design - CGEM was designed to be ergonomically friendly with large Altitude and Azimuth adjustment knobs for quick and easy polar alignment adjustment.  The internal RA and DEC motor wiring provides a clean look and an easy and trouble free set up.

Innovation - The CGEM series has a new innovative Polar alignment procedure called All-Star™.  All-Star allows users to choose any bright star, while the software calculates and assists with polar alignment.  Another great feature of the CGEM sure to please astroimagers, is the Permanent Periodic Error Correction (PEC) which will allow users to train out the worm gears periodic errors, while the mount retains the PEC recordings.

Performance - For objects near the Meridian (imaginary line passing from North to South), the CGEM will track well past the Meridian for uninterrupted imaging through the most ideal part of the sky. The CGEM mount has a robust database with over 40,000 objects, 100 user defined programmable objects and enhanced information on over 200 objects.

Celestron's CGEM mount is the perfect fit between the Advanced Series and CGE Series.  Offering the portability of the Advanced Series and the precision of the CGE.

Additional Information

Mount Computerized Equatorial
Tripod Adjustable, Stainless Steel
Power Supply Car battery adapter
Mount Weight 41 lbs (19 kg)
Tripod Weight 17 lbs (7.71 kg)
Counterweights 1 x 17 lbs
Weight (lbs) 75 lbs (34 kg)
Payload Capacity 40 lbs (18 kg)
Latitude Range 15° to 70°
Motor Drive Low cog DC Servo motors with encoders, both axes
Slew Speeds Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x
Tracking Rates Sidereal, Solar and Lunar
Tracking Modes EQ North and EQ South
Alignment Procedures AutoAlign, 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Software Precision 24 bit, 0.08 calculation
Computer Hand Control Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Database 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Power Requirements 12 VDC 3.2 Amps
GPS Optional SkySync GPS Accessory

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Knowledge Base

  1. What size of scope is best for different kinds of objects?
  2. Aperture
  3. Focal length
  4. Contrast
  5. Light gathering power and magnitude limit
  6. Telescope-Astronomy Resources on the Web
  7. What does magnitude mean?
  8. Exit pupil
  9. What are diffraction-limited optics?
  10. What is the focal ratio? How is it related to the f-stop?
  11. Near focus
  12. Field of view
  13. Magnification or power
  14. Resolution - resolving power
  15. Optical design aberrations
  16. Why don't the images I see through my telescope look the same as photos I see taken with the same type of telescope?
  17. How far can I see with a telescope?
  18. How do you determine a telescope's magnification?
  19. Rough polar alignment
  20. Why do I need polar alignment?
  21. Accurate polar alignment
  22. Precise polar alignment
  23. Polar alignment for the southern hemisphere
  24. I upgraded-reflashed my hand control and now I'm not getting the control functions for my mount, but for another mount. What happened? How can this be fixed?
  25. My CGEM mount won't let the front latitude screw lock the mount. What's wrong - is the mount unstable?
  26. I downloaded the PECTool software from the Celestron website to my Windows Vista 32 PC. When I tried tio install it, 'ERROR: NexRemote not allowed to run on WinNTX' was displayed. How do I get it to run?
  27. I hibernated my GOTO mount. When I powered back up and woke up the scope, it did not point as accurately as before. What gives?
  28. I'm doing photography with an eyepiece, using my camera with and without a lens. What are the f-numbers of my setup for the afocal and eyepiece projection methods?
  29. I need to box up my scope and ship it. What's the best way to pack it?
  30. Why do I need to guide my telescope for photography? Don't accurate alignment and firmware functions like periodic error correction (PEC) take care of it all?
  31. My GPS-equipped scope is showing the wrong time information. How do I correct this?
  32. I am using a SkyScout Connect with my Celestron GOTO telescope. Do I still need to align my scope?
  33. I am using a GPS with my Celestron GOTO telescope. Do I still need to bother with SkyAlign?
  34. I'm looking at my Celestron scope and it has a serial number on it. Can you tell me the model, type and year it was made?
  35. Does the stated payload weight of my Celestron mount include the counterweights?
  36. Why am I getting "This mount does not support the PECTool" when using my CGE, CPC, CGEM and CGE Pro mounts?
  37. Why am I getting "Found Difference at Address 301: Value of 3589 should be 3590" when ugrading my CGEM motor control firmware? Is this serious?
  38. What are the specifications for an AC adapter that will work with Celestron's
  39. What is LST? Where do I find it in my GOTO scope's menu?
  40. When I use IDENTIFY with my GOTO scope, what is it showing me?
  41. My CGEM mount is moving in the wrong direction when I use the direction arrows. What is wrong? How can I change the direction of the direction buttons?
  42. Is there any way to run Celestron's window-based drivers and software on Macs?
  43. My images with a CCD camera are showing black or white streaks on the brighter stars. They are all bloomed out. What's wrong with my scope?
  44. Where can I download the unified ASCOM drivers for Celestron?
  45. What is the operating temperature range for Celestron's telescopes?
  46. My NexStar hand control displays "Offset Too Large" when I'm trying to change my scope's alignment. What does this mean? How to I fix the issue?
  47. How much will the addition of a focal reducer increase my scope's field of view?
  48. My Celestron software won't run on my Windows 7 computer. Help!
  49. I need information on the RS-232 (serial) commands for NexStar controlled telescopes.
  50. I have two scopes I want to use side-by-side or tandem with my Celestron CGE - CGE Pro - CGEM - Advanced GT mount. Can I do that?
  51. How do I balance my CGEM-mount optical tube assembly (OTA) in declination?
  52. I'm using an 11" Schmidt-Cassegrain tube (SCT) on my CGEM mount and the scope won't balance in RA. What can be done about this?
  53. Can I change the position of my CGEM equatorial head on the tripod?
  54. How do I quickly start my Celestron telescope? Can I use previous alignment information?
  55. I have a CGEM mount and I need to use it at latitudes below 15 degrees or above 70 degrees. Can I do that?
  56. How do I use a third party periodic error correction (PEC) program like PEMPro with my Celestron mount?
  57. How do I use the polar axis finderscope for the CGEM mount?
  58. What are the instructions for getting my CN-16 or SkySync GPS working with my Celestron GOTO mount?
  59. I want to permanently pier-mount my CGEM. What size is the hole on the head holding the central rod?
  60. My CGEM has wires dangling in the polar axis shaft. Will these interefere with the insertion and use of the polar axis finderscope #94224?
  61. When should I use the CALIBRATE MOUNT utility? What does it do?
  62. What dovetail bars or plates are used with various Celestron mounts?
  63. I have a Celestron GOTO scope, a Mac and an autoguider. I want to autoguide with the scope. Is your autoguider port Mac-compatible?
  64. Does the NexStar hand control database include IC (Index Catalogue) objects?
  65. The autoguiding port diagram in my manual is different than the diagram for the NexGuide connection. Are these differences important?
  66. What problems are possible when using a dovetail-equipped telescope tube designed for one mount when it's used with another mount?
  67. What's a quick summary of All-Star polar alignment with CGEM - CGEM DX, CGE, CGE Pro and Advanced GT Series mounts?
  68. What is the threading on the outside of my Celestron GOTO mount's power jack?
  69. Miscellaneous Specifications for the CGEM - CGEM DX Mount
  70. Miscellaneous specifications for the CGEM Mount
  71. Can all named stars listed in the hand control be used for alignment?
  72. What are the payload weights of Celestron mounts?
  73. How do I program my flash upgradeable hand control? What about motor control upgrades?

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Reference Materials

Software

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Where To Buy

For a complete list of Celestron dealers, please visit our Dealer Locater
An award-winning legacy brand for over 50 years, Celestron has grown to become the world’s leading telescope maker, and enjoys brand-name recognition among serious amateur astronomers for superior optics, outstanding design, and innovative technology. Celestron also develops a wide range of exciting products and technologies that enhance the science, outdoor and educational markets. At Celestron, we strive to inspire a sense of wonder, knowledge and fun in our customers and throughout our company.

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