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Celestron CGEM 925 HD Telescope

Find over 40,000 celestial objects with this vibration-free telescope equipped with CGEM mount and polar alignment systems.

  • 235mm (9.25") Schmidt-Cassegrain telescope with EdgeHD optics
  • 2350mm focal length
  • CGEM Computerised Equatorial Mount
  • f/10 focal ratio
  • 23mm (102x), 2" diameter eyepiece
  • 2 year warranty
  • Celestron Item # 11081

Celestron Australia Warranty

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availability: out of stock

Please note: this telescope is a special order. We will contact you with delivery times once we receive your order.
Unfortunately, no discounts are available for this product.

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The CGEM mount has an attractive bold appearance and is capable of carrying Celestron's higher-end SCT optical tubes securely and vibration free, ideal for imaging and visual observation. The CGEM mount has a robust database with over 40,000 objects, 100 user defined programmable objects and enhanced information on over 200 objects.

Please Note: this product is available as a special order only. After you place your order, we will notify you within one business day of the expected delivery time. Unfortunately, no discounts are available for this product.This is a bulky item and therefore cannot be shipped internationally.

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

HD Features:

  • New aplanatic Schmidt telescope design produces aberration-free images across a wide field of view
  • Mirror tension locks hold the primary mirror 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

The CGEM was designed to be ergonomically friendly with large altitude and azimuth adjustment knobs for quick and easy polar alignment adjustment. CGEM has an innovative polar alignment procedure called All-Star. All-Star allows users to choose any bright star from the hand control, while the software calculates and assists with polar alignment.

Computerized Mount Features:

  • 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
  • Redesigned electronics deliver constant regulated power to the motors making them capable of driving the telescope even when not perfectly balanced.
  • 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
  • Meridian preference for slewing - allows you to approach an object from the side of the Meridian that maximizes tracking (and imaging) time.
  • Solar System alignment method - allows you to align your telescope and view the moon and planets during the day
  • 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.
  • 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
  • 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 go to 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
  • GPS compatible with optional SkySync GPS Accessory
  • Precision machined 40 mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings.
  • Secure power plug ensures that the mount's power source is not accidentally disconnected

Buy a telescope in Australia with us and we will provide after sale assistance and technical support.


  • Optical Design: Schmidt-Cassegrain with EdgeHD optics
  • Aperture: 235mm (9.25 in)
  • Focal Length: 2350mm
  • Focal Ratio: f/10
  • Eyepiece: 23mm, 2" diameter (102x magnification) eyepiece
  • Finderscope: 9x50
  • Star Diagonal: 2"
  • Mount Type: CGEM Computerized Equatorial
  • Tripod: 2" stainless steel
  • Power Requirements: Car battery adapter, included. Celestron Power Tank recommended (not included).
  • Highest Useful Magnification: 470x (limited to 200-250x due to atmosphere)
  • Lowest Useful Magnification: 34x
  • Limiting Stellar Magnitude: 14.4
  • Resolution (Rayleigh): 0.59 arc seconds
  • Resolution (Dawes): 0.49 arc seconds
  • Secondary Mirror Obstruction: 3.35" (85 mm)
  • Secondary Mirror Obstruction by Area: 13%
  • Secondary Mirror Obstruction by Diameter: 36%
  • Optical Coatings: Starbright XLT Coatings
  • Optical Tube Length: 55.9cm
  • Weight of Counterweights: 1 x 5kg, 1 x 7.73kg
  • Total Telescope Kit Weight: 51kg
  • Database: 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
  • Celestron Item # 11081




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