Celestron CGEM II 11 Inch EdgeHD Optics Telescope - 12019

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Item #CELE-12019

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  • Celestron’s venerable CGEM mount gets a new look and improved design with the CGEM II Equatorial Mount.
  • Paired with Celestron’s proprietary EdgeHD optical tube, this system is ready for serious visual observers and astroimagers alike.
  • CGEM II's lower profile design increases stability and rigidity, allowing the mount to handle payloads up to 40 lb.
  • Dual dovetail saddle accommodates both CGE/Losmandy and CG-5/Vixen style dovetails so you can pair this mount with just about any optical tube.
  • Larger knobs and longer clutch levers make setting up your telescope and adjusting your polar alignment easier and more secure.
  • Low cog DC Servo motor with integrated optical encoders provides smooth, accurate tracking over long periods.
  • Permanent periodic error correction (PPEC) allows you train your mount for even better tracking accuracy.
  • 2” steel tripod legs feature height index marks for quick leveling.
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  • Description

    For years, the Celestron CGEM set the standard in affordable, high performance German equatorial mounts. After listening to customer feedback, Celestron’s design team has made this workhorse even more functional with a series of thoughtful upgrades. Meet CGEM II.

    Improved Design and Ergonomics

    The first thing you’ll notice about CGEM II is its lower profile and wider stance compared with CGEM. This new form factor anchors more securely to the ground for improved rigidity. Thanks to its super stable design, CGEM II can handle 40 lb of payload with ease.

    Other clever updates make CGEM II significantly easier to use in the field. Beefy 2” steel tripod legs feature height index marks to make setting up and leveling your telescope a breeze. Celestron has lengthened the clutch levers and updated the polar alignment knobs so that you can make adjustments with just a twist of the wrist—even after a long night in the cold.

    CGEM II features all internal cabling to prevent cable wrap and snags. Plus, for the first time ever, the hand control features an integrated USB port to make downloading software updates a breeze. You’ll also receive a new dual dovetail saddle so you can pair the CGEM II with virtually any optical tube; it accommodates both CGE/Losmandy and CG-5/Vixen style dovetails.

    Capture the Sky with EdgeHD Optics

    Speaking of optical tubes, this telescope kit includes Celestron’s unique 11” EdgeHD optical tube. This proprietary system virtually eliminates visual defects associated with other telescope designs: field curvature and off-axis coma. You’ll get pinpoint stars all the way to the edge of your imaging sensor or your ultra-wide eyepieces.

    Precision Tracking for Astroimaging

    If you’re ready to take your astrophotography to the next level, CGEM II can help you get there. The low cog DC servo motor with integrated optical encoders provides precise tracking while minimizing cogging even at the lowest speeds.

    All German equatorial mounts have periodic error in their worm gears, but CGEM II features permanent periodic error correction so you can train these errors out of your mount once and enjoy error-free performance for years to go come.

    Of course, you also get all of the innovative software technologies that make using a Celestron GEM mount so easy: SkyAlign and All Star Polar Alignment. SkyAlign allows you to center any three bright objects to align the telescope’s GoTo in minutes, while All Star gives you a super accurate polar alignment in a fraction of the time it takes to use a polar finderscope. Best of all, you don’t need a clear view of Polaris. Once you’ve set up your CGEM II, these automated procedures will have you ready to capture images in about 15 minutes.

    Whether you’re a serious visual observer, an experienced imager looking for a portable setup, or a newbie who wants to invest in a superior first telescope right out of the gate, you’ll love the performance and value of CGEM II.

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  • Dimensions & Specifications

    Optical Design



    279.4 mm (11 in)

    Focal Length

    2800 mm (110 in)

    Focal Ratio


    Focal Length of Eyepiece 1

    23 mm (0.91 in)

    Magnification of Eyepiece 1

    122 x



    Star Diagonal

    2" w/ 1.25" adapter

    Optical Tube


    Highest Useful Magnification

    660 x

    Lowest Useful Magnification

    40 x

    Limiting Stellar Magnitude


    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)

    Optical Coatings

    StarBright XLT

    Optical Tube Length

    24 in (610 mm)

    Optical Tube Weight

    28 lbs (13 kg)

    Optical Tube Dovetail Compatibility

    CGE Mount

    Mount Type

    German Equatorial Mount


    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


    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


    40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects

    Mount Weight

    40 lbs

    Tripod Weight

    20 lbs


    3 x 11 lbs

    Total Weight of Mount Kit

    77 lbs

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    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    Default manufacturer warranty.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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