Celestron CGEM II 1100 Schmidt Cassegrain Telescope

Celestron CGEM II 1100 Schmidt Cassegrain Telescope
Celestron CGEM II 1100 Schmidt Cassegrain TelescopeCelestron CGEM II 1100 Schmidt Cassegrain TelescopeCelestron CGEM II 1100 Schmidt Cassegrain Telescope
Our Price:  £4,199.00(Inc. 20% VAT)(£3,499.17 Exc. VAT)

Part Number:  DH-12012
Brand:  Celestron



Celestron's CGEM II 1100 Schmidt-Cassegrain Telescope features premium StarBright XLT coated optics and the newly redesigned CGEM II computerized equatorial mount. It is the most lightweight and portable of the three size models. This telescope is especially at home as a solid platform for long exposure photography with optional CCD cameras or photographic equipment.  The optical tube assembly of the CGEM II 1100 weighs only ~12.5kg (27.5 lbs.), which makes this telescope still portable enough to be taken to dark skies, and it has 89% more light gathering power than an 8" telescope and more than 40% more than the 9.25".

The CGEM II mount has been updated  to give a fresh, modern, attractive, bold appearance and is capable of carrying Celestron’s higher-end SCT optical tubes up to 11" securely and vibration free. This makes it ideal for both imaging and visual observing. Capable of holding ~18kg (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.


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.


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.


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.

Optical Tube Info:    

  • Optical Design    Schmidt-Cassegrain
  • Aperture (mm)    279.4 mm (11 in)
  • Focal Length    2800 mm (110 in)
  • Focal Ratio    10
  • Focal Length of Eyepiece 1 (mm)    40 mm (1.57 in)
  • Magnification of Eyepiece 1    70 x
  • Finderscpoe    9x50
  • Star Diagonal    1.25
  • Optical Tube    Aluminum
  • Highest Useful Magnification    660 x
  • Lowest Useful Magnification    40 x
  • Limiting Stellar Magnitude    14.7
  • Resolution (Rayleigh)    0.5 arc seconds
  • Resolution (Dawes)    0.42 arc seconds
  • Light Gathering Power (Compared to human eye)    1593 x
  • Secondary Mirror Obstruction    3.75 in (95 mm)
  • Secondary Mirror Obstruction by Diameter    34%
  • Secondary Mirror Obstruction by Area    12%
  • Optical Coatings    StarBright XLT
  • Optical Tube Length    24 in (610 mm)
  • Optical Tube Weight    27.5 lbs. (12 kg)
  • Dovetail Compatibility    CGE Mount

Mount Info:

  • Mount Type    German Equatorial Mount
  • Tripod    2” Steel tripod with graduated markings on lower section
  • Dovetail Mount    Directly connects to both CG-5 & CGE dovetail bars
  • Payload Capacity    40 lbs
  • Latitude Range    15º – 70º
  • Power Requirements    12 VDC, 3.2 amps
  • Ports    1x Hand control port, 1x Auxiliary Port, 1x Auto guider port, 1 USB 2.0 port (on hand control)
  • Motor Drive    Low cog DC servo motors
  • Slew Speeds    9 slew speeds
  • 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
  • Computerized Hand Control    Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons, USB 2.0 port for PC connection
  • Database    40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
  • Mount Weight    40 lbs
  • Tripod Weight    20 lbs
  • Weight of Counterweight    2 x 17 lbs counterweight
  • Total Weight of Mount Kit    77 lbs

If you have a general, technical or stock query about this product, please do contact us using the form below. We look forward to hearing from you and helping you.

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