Celestron CGEM-II 925 Computerized Telescope

More Views

Celestron CGEM-II 925 Computerized Telescope
Item # CE-12011
0 Questions(s)

Scheduled Delivery

  • The Celestron CGEM-II 925 telescope features a high quality Celestron 9.25" Schmidt Cassegrain telescope mounted on an innovative computerized equatorial mount.
  • Performance and design combine with All Star polar alignment features, tracking beyond the meridian, permanent programmable periodic error correction and vibration free stability for both imaging and visual observing.
  • The Celestron CGEM-II 925 telescope has a full 235 mm (9.25") aperture operating at a focal length of 2350 mm (92.52") to provide a focal ratio of f/10. Premium StarBright XLT coatings give a limiting magnitude of 14.4 with an outstanding 0.49 arc seconds of resolution.
  • Features removable visual back, internal wiring, autoguide, auxiliary ports and communication ports, flash upgradeable software and integrated optical encoders.


Celestron CGEM-II 925 Telescope - 9.25" Schmidt Cassegrain Telescope on a CGEM-II Mount

Some 40 years ago, Celestron founder - Tom Johnson - introduced the first Celestron Schmidt-Cassegrain telescopes into the amateur astronomy market and began a revolution. Now, Celestron's CGEM-II-925 takes performance to a new level beginning with the extreme optical quality of the 9.25" Schmidt Cassegrian combined with Starbright XLT coatings mounted on Celestron's newly engineered and innovative CGEM-II mount. This new take on a tried and true design has given the world another Celestron "classic" - one capable of carrying the load securely and vibration free... and taking both astro imaging and visual observing to new heights.

With a telescope capable of gathering 1127X more light than the human eye, the precise f/10 optics of the Celestron C925 SCT offer up an incredible 0.49 arc seconds of resolution spread out over a 0.53° angular field of view. With a limiting magnitude factor of 14 and a practical magnification limit of 555X, we're talking about a telescope able to deliver remarkable planetary and lunar views. When sky permits, you can expect to see details like delicate divisions in Saturn's ring structure, details on Mars and follow Jupiter events like shadow transits and Great Red Spot appearances with ease. Star clusters will transform into well-resolved facets, galaxies will take on structure and difficult double stars will yield their companions. With a low end magnification limit of 34X, just add a wide field eyepiece, or open both eyes wide with Celestron Stereo Binocular Viewers and enjoy panoramic vistas of extended nebulae and sweep the heavens for every last photon!

What sets the 9.25" Celestron CGEM-II apart from competitor models is simplicity and durability. The 9.25" CGEM-II was designed to be ergonomically friendly with large Altitude and Azimuth adjustment knobs for quick and easy procedures and adjustments. The intuitive All-Star system allows users to choose any bright star from the NexStar hand control, while the software calculates and assists with polar alignment. Then, just kick back and enjoy. The CGEM-II-925 database will provide over 40,000 objects, 100 user defined programmable objects and enhanced information on over 200 objects for your celestial viewing pleasure.

But it's more than just to "GoTo" functions which will make the Celestron CGEM-II-925 SCT telescope one of the most worthy optical investments you'll ever consider... It's the design qualities which make this telescope last that count. Unlike less expensive models, the Celestron CGEM-II Schmidt-Cassegrain mechanism that moves the primary mirror to adjust focus is supported by two pre-loaded ball bearings, minimizing the "mirror flop" typical of bushing focus mechanisms. There's nothing to get dragged or snagged during set-up or transportation because the RA and Dec motor wiring is all internal. The drive incorporates a low cog DC Servo motor with integrated optical encoders which ensure smooth, quiet operation and long life... a the motor armatures are skewed to minimize cogging which is required for low speed tracking. Precision machined 40mm diameter steel polar shafts are supported by multiple tapered roller bearings and ball bearings while the mount utilizes a steel worm gear and 90mm pitch diameter brass worm wheel. Even a secure power plug is employed, so the mount's 12V DC 1.5 Amp power source can't be accidentally disconnected. The Celestron CGEM-II-925 comes equipped with a car battery adapter, but you'll find this telescope so fascinating you might just want to add a AC adapter or Celestron Power Tank, too! Furthermore, the dual plate design allows you to choose between the CGE-Pro or CG-5 style dovetails, meaning that you can freely utilize a much wider range of scopes and accessories in conjunction with this mount!

Still more? Then consider the many features that make the Celestron CGEM-II a "gem" for astrophotography, too. It can be as simple as adding a Celestron NexImage Solar System Imager to the CGEM-II-925, or even just adapting a digital camera. Not only will it track well past the meridian for uninterrupted imaging through the most ideal part of the sky, but the Permanent Periodic Error Correction (PPEC) will allow users to train out the worm gears periodic errors, while the mount retains the PEC recordings. Autoguide port and auxiliary ports are conveniently located on the electronic plate for long exposure astrophotography and include a designated six-pin RJ-12 modular jack and ST-4 compatible guide port. You'll find an RS-232 communication port on hand control to control the telescope via a personal computer and NexRemote telescope control software, for advanced control. Software features include; mount calibration, database filter limits, hibernate, five alignment procedures, and user-defined slew limits. What's even better is that it's all flash upgradeable. Just connect to the Internet to update your hand control software and motor control units. You can even add an optional Celestron GPS unit!

The Celestron CGEM-II 925 carries on the Celestron tradition of performance, durability and value. Major colleges and universities worldwide use Celestron telescopes in their astronomy programs and the Celestron telescope line has been chosen over all competing models by NASA to be taken on several space shuttle research missions. Why not add a Celestron SkyScout to the fun? Celebrate the International Year of Astronomy with Celestron and bring that kind of quality home to your backyard tonight...

Celestron CGEM-II 925 Telescope Features

  • Double line, 16-character liquid crystal display hand control with 19 fiber optic backlit LED buttons for easy operation of "GoTo" features.
  • 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.
  • Included star diagonal provides more comfortable viewing position when observing objects that are high in the sky.
  • 6X30 Finderscope and 25mm Eyepiece and Car Battery Adapter help to complete your observing needs.
  • Ultra-sturdy 2" leg diameter adjustable height steel tripod with secure locking mechanisms, tipped ends and captive central accessory tray.
  • Computerized equatorial mount offers nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x, EQ North and EQ South tracking modes and Sidereal, Solar and Lunar tracking rates.
  • Five available alignment procedures: 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align with a software precision of 24bit, 0.08 calculation.
  • Software Features include: Mount Calibration, Database Filter Limits, Hibernate, and user-defined slew limits - all flash upgradeable for downloading product updates over the Internet.

    Celestron Product Number: 12011
Additional Information

Additional Information

SKU CE-12011
UPC Code 050234120111
Manufacturer Celestron
Telescope Series Celestron CGEM-II
Optical Design Schmidt-Cassegrain
Mount Type Equatorial - GoTo
Warranty 2 Year Warranty
Telescope Aperture 9.25"
Telescope Focal Ratio f/10
Telescope Focal Length 2350mm
Limiting Stellar Magnitude 14.4
Highest Useful Magnification 555x
Optical Coatings Celestron XLT
Tube Color or Finish Celestron Grey
Optical Tube Outer Diameter Not provided by manufacturer
Length of Optical Tube 22"
Optical Tube Weight 20 lbs.
Mount Weight 41 lbs.
Dew Shield Included? No, Sold Separately
Diagonal Included? Yes - 1.25" Star Diagonal
Finder Included 6 x 30 Optical Finder
Eyepiece(s) Included 25mm
Hand Controller Included? Yes
Power Adapter Included DC Cigarette Lighter Adapter
CD ROMs Included NexRemote
Counterweights Included (1) 11 lbs. (1) 17 lbs.
Alignment Procedure 1-Star Alignment, 2-Star Alignment, Last Alignment Used, Quick Align, Solar System Align
Tracking Modes EQ North, EQ South
Objects in Database 40,000 objects
OTA Mount Type CGE Dovetail
Tripod Type Included Adjustable with Steel Legs
Total Telescope Weight 113 lbs.
Included Items

Included Items

  • C925 SCT Optical Tube Assembly
  • CGE-II Mount
  • Heavy duty 2" Aluminum Tripod
  • Accessory Tray
  • NexStar Control
  • PPEC (Permanent Periodic Error Compensation)
  • RS-232 Port
  • Software
  • Star Diagonal
  • 25mm Eyepiece
  • 6X30 Finderscope
  • Car Battery Adapter
  • Cables
  • Drive Motors
  • Counterweight
  • Dust Caps
Questions & Answers

Product Questions

No questions yet. Be the first to ask the question!
Support / Downloads
Related Blog Posts