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Features

  • 9.25" Schmidt-Cassegrain optical tube assembly
  • Celestron's premium StarBright XLT coatings
  • 40 lbs payload capacity
  • Dual-fit Vixen/CG-5 and Losmandy/CGE dovetail saddle
  • 2" steel legs with height index marks for quick leveling
  • Internal cabling throughout for worry-free remote operation
  • Able to track past the meridian allowing seamless imaging
  • USB hand control to control the telescope via a personal computer

    Celestron CGEM II 925 Schmidt-Cassegrain Telescope

    The CGEM II 925 Schmidt-Cassegrain Telescope features Celestron’s premium StarBright XLT coated optics and the newly redesigned CGEM II computerized equatorial mount. The CGEM II 925 offers the middle ground for those looking to combine portability with high resolution. This telescope is especially at home as a solid platform for long exposure photography with optional CCD cameras or photographic equipment. With over 925 inches of aperture and our premium StarBright XLT coatings, the CGEM II 925 gives you over 1000 times the light gathering power than the unaided eye.

    A fresh update to the venerable CGEM mount, the CGEM II 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 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 II 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 II series features Celestron’s 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 II 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 II will track well past the Meridian for uninterrupted imaging through the most ideal part of the sky. The CGEM II 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 II 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.

    Specifications

    Optical Tube Info:
    Optical Design Schmidt-Cassegrain
    Aperture 234.95mm (9.25")
    Focal Length 2350mm (93")
    Focal Ratio f/10
    Focal Length of Eyepiece 1 25mm (0.98")
    Magnification of Eyepiece 1 94x
    Finderscope 6x30
    Star Diagonal 1.25" Star Diagonal
    Optical Tube Aluminum
    Highest Useful Magnification 555x
    Lowest Useful Magnification 34x
    Limiting Stellar Magnitude 14.4
    Resolution (Rayleigh) 0.59 arc seconds
    Resolution (Dawes) 0.49 arc seconds
    Light Gathering Power (Compared to human eye) 1127x
    Secondary Mirror Obstruction 85mm (3.35")
    Secondary Mirror Obstruction by Diameter 36%
    Secondary Mirror Obstruction by Area 13%
    Optical Coatings StarBright XLT
    Optical Tube Length 559mm (22")
    Optical Tube Diameter 271.8mm (10.7")
    Optical Tube Weight 20 lbs (9.07kg)
    Dovetail CGE Dovetail bar
    Mount Info:
    Mount Type Computerized Equatorial
    Instrument load capacity 40 lbs (18 kg)
    Height adjustment range (includes mount and tripod) 1346mm - 1651mm (53" – 65")
    Tripod Leg Diameter 50.8mm (2") Steel tripod with graduated markings on lower section
    Latitude adjustment range 15° - 70°
    Mount Head Weight 40 lbs (18.14 kg)
    Accessory Tray Yes
    Tripod Weight 20 lbs (9 kg)
    Weight of Counterweights 1 x 17 lbs | 1 x 11 lbs
    Slew Speeds 9 slew speeds - max speed 4.5°/second
    Tracking Rates Sidereal, Solar and Lunar
    Tracking Modes EQ North & EQ South
    GPS N/A
    Dovetail Compatibility Dual saddle plates (CG-5 and CGE saddle)
    Number of Auxiliary ports 2 Aux ports (1x Hand control port and 1x AUX Port for optional accessories)
    Autoguide port Yes
    USB Port Yes, input on Hand Control
    Power Requirements 12V DC, 3.2 amps
    Motor Drive DC servo motors
    Alignment Procedures 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align
    Periodic Error Correction Yes
    Computerized Hand Control 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 port for PC connection
    NexStar+ Database 40,000+ objects, 100 user defined programmable objects Enhanced information on over 200 objects
    Software Celestron's Starry Night Special Edition Software, SkyPortal App
    Total Kit Weight 98 lbs (44.4 kg)
    Included Items CGEM II Equatorial Head |Tripod | Accessory Tray | 1 x 17 lbs and 1 x 11 lbs counterweights | NexStar+ Hand Control | DC Power Cable (item#18769) | Hand Control Holster