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Celestron CGEM 925 HD

The CGEM 925 HD combines Celestron's newly designed CGEM Computerized Equatorial mount with its new EdgeHD optical system. With over 9 inches of aperture and our premium StarBright XLT coatings, the CGE Pro 925 HD gives you over 1000 times the light gathering power than the unaided eye.  Designed to give difraction limited performace, the CGEM 925 HD has established itself as a premier astro-imaging telescope.

CGEM 925 HD - General Features

  • 9.25" EdgeHD Optics
  • CGEM Computerized Equatorial Mount
  • Celestron's premium StarBright XLT coatings
  • 9x50 finderscope to help accurately find objects
  • Ultra sturdy 2" steel tripod with Accessory Tray
  • Star diagonal provides more comfortable viewing position when observing objects that are high in the sky

CGEM 925 HD - HD Features

  • New aplanatic Schmidt telescope design produces aberration-free images across a wide field of view
  • Mirror tension locks hold the primary mirro in place and reduces image shift
  • Cooling vents allow hot air to be released from behind the primary mirror
  • Fastar compatible for fast f/2 imaging

CGEM 925 HD - Computerized Mount Features

  • Proven NexStar computer control technology
  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • 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
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • 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 star; solar systems; objects and asterisms
  • Permanent programmable periodic error correction (PEC) - corrects for periodic tracking errors inherent to all worm drives
  • 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 to control the telescope via a personal computer
  • Includes NexRemote telescope control software, for advanced control of your telescope via computer
  • Secure power plug ensures that the Mount's power source is not accidentally disconnected
  • GPS compatible with optional CN16 GPS Accessory
  • Precision machined 40mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings.

Specifications:

Optical Design  : EdgeHD Optics
Focal Length  : 2350 mm (92.52 in)
Aperture  : 235 mm (9.25 in)
Focal Ratio  : 10
Finderscope  : 9x50
Mount  : CGEM Computerized Equatorial
Optical Coatings  : Starbright XLT Coatings
Optical Tube  : Aluminum
Eyepiece 1  : 23 mm (0.91 in)
Magnification 1  : 102 x
Star Diagonal  : 2"
Tripod  : Adjustable, Stainless Steel
CD ROM  : NexRemote control software with RS232 cable
Power Supply  : Car battery adapter
Highest Useful Magnification  : 555 x
Lowest Useful Magnification  : 34 x
Limiting Stellar Magnitude  : 14.4
Resolution (Rayleigh)  : 0.59 arcsec
Resolution (Dawes)  : 0.49 arcsec
Eyepiece 1 Field of View  : 0.53 °
Light Gathering Power  : 1127 x
Angular Field of View  : 0.8 °
Secondary Mirror Obstruction  : 3.35 in (85.09 mm)
Secondary Mirror Obstruction by Area  : 13.1 %
Secondary Mirror Obstruction by Diameter  : 36.2 %
Gear  : Steel worm gear and 90mm pitch diameter brass worm wheel
Motor Drive  : Low cog DC Servo motors with encoders, both axes
Computer Hand Control  : Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
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  : 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
Software Precision  : 24bit, 0.08 calculation
Database  : 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Power Requirements  : 12 VDC 1.5 Amp
GPS  : Optional CN16
Accessory Counterweights  : 1 x 11 lb, 1 x 17 lb
Optical Tube Length  : 22 in (558.8 mm)
Telescope Weight  : 113 lb (51.26 kg)

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