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Solar Eclipse 2017

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Orion Telescopes
Celestron CGEM-1100 Computerized 11" Cassegrain Telescope
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Standard Per-Item Shipping Charge: $150.00
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This product is no longer available for purchase.
  • Celestron 11" Schmidt-Cassegrain telescope with premium StarBright XLT coatings
  • Features a computerized 40,000 celestial object database with 400 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
  • Calibration, Database Filter Limits, Hibernate, Align Procedures, and user-defined slew limit features included
  • Autoguide port and auxiliary ports located on the telescope's electronic pier for long exposure astrophotography

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Item #  09123
Mfg Model #  11099

Celestron's CGEM-1100 Computerized 11" Cassegrain Telescope offers premium performance and mobility for stargazers seeking the ultimate Astronomy experience. It features an 11" Optical Tube weighing only 27.5 lbs., and a telescope mount with a unique ergonomic design for ease of use and convenient mobility. Equipped with StarBright XLT coatings it can capture up to 89% more light gathering power than an 8" telescope. The Celestron CGEM-800 Equatorial mount 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 series has a new innovative Polar alignment procedure called All-Star (patent pending). All-Star allows users to choose any bright star, while the software calculates and assists with polar alignment. Another great feature of the CGEM, sure to please astrophotographers is the Permanent Periodic Error Correction (PEC) which will alow 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 will track well past the Meridian for uninterrupted astroimaging through the most ideal part of the sky. The Celestron CGEM-1100 Computerized 11" Cassegrain Telescope mount has a robust database with over 40,000 computerized objects, 400 user defined programmable obects and enhanced information on over 200 objects.


This product is serviced and supported by its manufacturer according to the terms and conditions included in the packaged product. Orion's limited warranty does not apply. Please contact the manufacturer directly for technical support.


Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

  • Best for viewing
    Fainter deep sky
  • Best for imaging
    Deep sky
  • User level
  • Optical design
  • Optical diameter
  • Finder scope lens diameter
  • Focal length
  • Focal ratio
  • Optics type
  • Eyepieces
    Plossl 40.0mm (1.25")
  • Magnification with included eyepieces
  • Resolving power
  • Lowest useful magnification
  • Highest useful magnification
  • Highest theoretical magnification
  • Limiting stellar magnitude
  • Optical quality
    Diffraction limited
  • Finder scope
  • Focuser
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Secondary mirror obstruction
  • Secondary mirror obstruction by diameter
  • Secondary mirror obstruction by area
  • Mount type
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Dovetail bar system
  • Computerized compatibility
    Go-To included
  • Alignment procedure
    2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
  • Number of objects in database
  • Tracking rates
    Sidereal, Solar and Lunar
  • Motor speeds
    5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x
  • Motor type
    DC Servo motors with encoders
  • Power requirement
    12-volt DC - 1.5A (tip positive)
  • PEC
  • GPS
    Sold separately
  • Backlash compensation
  • Setting circles
    Electronic, via the hand controller
  • Polar-axis scope
    Sold separately
  • Counterweights
    Two 17 lb.
  • Available ports
    RS-232, Aux, autoguider
  • Tube material
  • Tripod material
  • Tripod leg diameter
    2.00 in.
  • Length of optical tube
    24.0 in.
  • Weight, optical tube
    27.5 lbs.
  • Weight, mount/tripod
    58.0 lbs.
  • Weight, fully assembled
    120.0 lbs.
  • Warranty
    Two year

Orders received by noon Pacific Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

Standard Delivery: $150.00
3 Day Delivery: $307.00
2 Day Delivery: $307.00
Next Day Delivery: $362.00


This product is available to ship Standard delivery within the 50 US states, APO/DPO/FPO addresses and US territories/protectorates. Delivery is not available to Canada.

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