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Celestron CGEM-II 925 EdgeHD Telescope Bundle - CE-12018

SKU : CE-12018

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  • To properly power this product, you will need the AC adapter listed in the recommended items below.
  • A 235 mm (9.25-inch) Aperture Telescope!
  • CGEM-II Mount.
  • Smooth & Quiet Performance.
  • Uninterrupted views Across the Meridian.
  • 2-inch Star Diagonal with a 1.25-inch Adapter.
  • f/10 & Fastar Compatible to f/2.

Product Details

  • The CGEM-II 925 EdgeHD by Celestron is a 235 mm (9.25-inch) aperture corrected Schmidt-Cassegrain telescope with a CGEM-II Mount.

    The Celestron Edge is coma-free, but it also has a built-in field flattener to ensure sharp focus all the way to the edge of the field, producing true Astrograph quality images. This results in pinpoint, High Definition star images throughout your astrophotographs.

    Celestron's Special Features 

    The Celestron CGEM-II mount has a fresh, attractive, bold appearance and is capable of carrying Celestron's higher-end SCT optical tubes (up to 11-inch) securely and vibration free which is ideal for both imaging and visual observing.

    Ergonomic Design - The Celestron CGEM-II 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 provide a clean look and an easy and trouble-free set-up.

    Innovation - The Celestron CGEM-II 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-II, sure to please astro-imagers, 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. Furthermore, the CGEM-II now has a dual-saddle design that permits you to use both kinds of Dovetail Plate with the mount!

    Performance - For objects near the Meridian (imaginary line passing from North to South), the Celestron CGEM-II mount 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, 400 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.

    Superior mount performance combined with superior edge performance not only creates rounder, more pleasing stars but actually improves the resolution and limiting magnitude when compared to telescopes of equal aperture. When it comes to the Celestron HD series coupled with Celestron's StarBright XLT coating group on every surface, EdgeHD optics gives you maximum light throughput across the widest visual and photographic spectrum... It's a vision you'll never forget.

  • specifications

    Aperture234.95 mm (9.25")
    Back Focus146.05mm
    Camera/Eyepiece Connection3.29”x16 tpi
    Corrected Image Circle42mm
    Dawes Limit0.49 arcseconds
    Dew Shield Size262mm
    Drive TypeLow cog DC servo motors
    Focal Length2350 mm
    Focal Ratiof/10
    Free ShippingYes
    Head DesignEquatorial
    Highest Magnification469.9x
    Instrument Capacity40 lbs
    Latitude Range15 to 70 Degrees
    Light Gathering Power1127x
    Limiting Magnitude15.6
    Mount Head Weight40lbs
    Optical DesignModified SCT
    PortsAutoguide Port
    PortsHand Controller
    PortsUSB 2.0
    Power Consumption12V DC 3.2A
    Secondary Obstruction85mm
    Slew Speed5 Degrees Per Second
    Telescope ConnectionDual Vixen & Losmandy
    Total Weight77 lbs
    Tracking RatesLunar
    Tracking RatesSidereal
    Tracking RatesSolar
    Tripod Weight20 lbs
    Tube Diameter262mm
    Tube Length559mm
    Tube Weight21 lbs
    Warranty2 Year Warranty
  • included items

    • 235 mm (9.25-inch) 925 EdgeHD Corrected Schmidt-Cassegrain OTA
    • CGEM-II (Celestron German Equatorial Mount - II).
    • Tripod with adjustable 2-inch Steel Legs.
    • Accessory Tray.
    • NexStar+ Hand Controller.
    • 9x50 Finderscope.
    • 2-inch Star Diagonal with a 1.25-inch Adapter.
    • 2-inch Eyepiece, 23 mm Wide-Angle Luminos, 102 mag.
    • (2) Counterweights, #1=17-lb, #2=11-lb.
    • DC Cigarette Lighter Adapter.
    • NexRemote CD ROM Software.
    • 2 Year Warranty.

Product Reviews

Customer Reviews
4.6 Based on 10 Reviews
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Filter Reviews:
    Robert D.
    United States United States

    A weighty review.

    What can I say about a counter weight? It is doing what it was ment to do. Delivery was fast and in a timely manner.

    United States United States

    Good Reliable Mount

    I've had my CGEM II for about a year. I do mostly imaging with it and it tracks very well. Auto guiding is very effective. I usually run sub frames at around 30 second exposures but routinely run them for an hour or more. There is very little error during that time. I mount an 11 inch edge with hyperstar which is about the maximum the mount can handle. However I've never felt like it's overloaded even with camera, guide scope, asiair etc. hanging on it. Balance is important as I find you need to pick your target and then balance it with a slight over heavy on the front end. If you're having any trouble, spend a bit more time with balancing. Definitely a great mount for the price.

    Michael L.
    United States United States

    Great for 2008, not 2021.

    I've had my CGEM II for now about 7 months, and it has been a mess to deal with. I would recommend this mount ONLY if you're doing strict visual observing, and not astrophotography, as this mount is IMPOSSIBLE to guide under 1.5-2" RMS I've hypertuned my mount, and it didn't help much. I'm using it with a C8 Edge HD, so not even loading it up, with perfect balance, and an Off-Axis-Guider, and it cant manage sub arcsecond guiding even on good nights, leaving me to do visual. Summary: A mount that looks sexy, seems promising, but fails to perform like its competitors- for nearly 100$ more, using technology that is far too outdated, (not even a USB port on the thing), and hostile towards astrophotographers using longer focal lengths. If you're looking at this mount, save the hastle, and the nearly 100$ extra for the CGEM, and go grab an EQ6R PRO, as it has a handle (doesn't sound like a lot, but trust me, it is NECESSARY for grab n go.), belt drives (A must for guiding), and so much more. I'm gonna go order my Astro-Physics Mach2GTO-L now.

    OPT Telescopes Celestron CGEM-II 925 EdgeHD Telescope Bundle - CE-12018 Review
    United States United States

    It's good

    The optics are worth the price of admission, Crisp, sharp everything you're hoping for. My only suggestion for Celestron is to go back to larger set screws for the mounting plate and accessories.

    James P.
    United States United States

    cgem2 mount

    I wasn't sure if I should get my old mount fixed or get a new one. I dropped the old one while moving. I'm glad I invested in the new one. It's built like the proverbial brick

    Cynthia W.
    United States

    Excellent service from OPT & Peter Meyers

    Top notch.. best service; advice, product knowledge, accessory recommendations and overall communication.