Celestron StarSense AutoAlign Accessory for Automatic Alignment
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 8” 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.
Dimensions & Specifications
203.2 mm (8 in)
2032 mm (80 in)
Focal Length of Eyepiece 1
40 mm (1.57 in)
Magnification of Eyepiece 1
Highest Useful Magnification
Lowest Useful Magnification
Limiting Stellar Magnitude
0.69 arc seconds
0.57 arc seconds
Light Gathering Power (Compared to human eye)
Secondary Mirror Obstruction
2.7 in (69 mm)
Optical Tube Length
17 in (432 mm)
Optical Tube Weight
14 lbs (6.35 kg)
German Equatorial Mount
2” Steel tripod with graduated markings on lower section
Directly connects to both CG-5 & CGE dovetail bars
15 – 70 degrees
12 VDC, 3.2 amps
1x Hand control port, 1x Auxiliary Port, 1x Auto guider port, 1 USB 2.0 port (on hand control)
Low cog DC servo motors
9 slew speeds
Sidereal, Solar and Lunar
EQ North and EQ South
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
Total Weight of Mount Kit
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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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