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Celestron C9.25 SCT OTA with CGE Mount Plate

SKU : CE-91027-XLT

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  • 9.25-inch Schmidt-Cassegrain Optical Tube Assembly.
  • Aluminum Optical Tube, Only 20 pounds.
  • 2350 mm Focal Length.
  • f/10 Focal Ratio.
  • Visual Back Allows for Use with 1.25-inch Accessories.
  • Includes a 3-inch Dovetail Plate Compatible with CGE Mounts.


Product Details

  • The Celestron C9 9.25-inch Schmidt-Cassegrain OTA with CGE Mount Plate is available individually to be used with your favorite mount. Each OTA is made to the same exact standards as those used on all their high-quality telescopes. All of its optical surfaces are coated with StarBright XLT coatings. These tube assemblies are equipped with the same dovetail mounting bar as used on the CGE Pro or CGEM series for easy attachment to a variety of popular mounts.

    Besides seeing all of the Messier Catalog objects, you can also see hundreds of other, less famous, but equally interesting NGC, IC, and Caldwell objects. Turn this scope to the planets and see amazing detail on the surface of Jupiter; see Cassini's Division in the rings of Saturn, and resolve details on the surface of Mars. Even the distant Uranus, Neptune, and Pluto are within your reach.

    Celestron C9.25 Optical Technical Details

    • Highest Useful Magnification: 555x.
    • Lowest Useful Magnification: 34x.
    • Limiting Stellar Magnitude: 14.4.
    • Resolution (Rayleigh): 0.59 arc seconds.
    • Resolution (Dawes): 0.49 arc seconds.
    • Light Gathering Power (Compared to human eye): 1127x.
    • Secondary Mirror Obstruction: 85 mm (3.35 inches).
    • Secondary Mirror Obstruction by Diameter: 36%.
    • Secondary Mirror Obstruction by Area: 13%.
    • Optical Coatings: StarBright XLT.
    • Optical Tube Length: 559 mm (22 inches).
    • Optical Tube Diameter: 271.78 mm (10.7 inches).
    • Optical Tube Weight: 20 pounds (9.07 kg).
    • Dovetail: CGE Dovetail Bar.
    • Continued Below.

    Celestron Product Number: 91027-XLT 

    Please Note: This optical tube assembly comes with a 3 Inch dovetail plate and will attach to mounts such as the Celestron CGE Pro, Celestron CGEM, the Losmandy G-11, and newer GM-8, Software Bisque's Paramount, and mounts by AstroPhysics. This OTA will not fit onto the CG-5, older GM-8 mounts, or the Meade LXD55. If you are unsure, please give us a call before you buy. Thanks!

  • specifications

    Aperture235 mm (9.25")
    Focal Length2350 mm
    Focal Ratiof/10
    Free ShippingYes
    Optical CoatingsCelestron XLT
    Optical DesignSCT
    OTA Length22"
    OTA Mount TypeCGE Dovetail
    OTA Weight20 lbs.
    Warranty2 Year Warranty
  • included items

    • C9, 234.95 mm (9.25-inch) Schmidt-Cassegrain OTA.
    • 3-inch dovetail CGE mount plate.
    • 6x30 optical finderscope.
    • 1.25-inch star diagonal.
    • 1.25-inch/ 25 mm eyepiece, 94x mag.
    • 2-year warranty.



Product Reviews

Customer Reviews
4.6 Based on 27 Reviews
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Filter Reviews:
    Jarrod H.
    United States United States
    Issues at the start

    Under the circumstances I had no issues waiting for the product and it is very sturdy. I just wish I could use it. It has not worked since it arrived and I had to send it to Celestron the day I got it for repairs. Support was easy to work with but I shouldn't have to use them day 1.

    JOE C.
    United States United States
    Should have bought this the first time around.

    After 2 weeks of clouds/rain I finally got to put her to use. Took a 3 minute exposure of Orion last night with no auto guiding and NO star trails. See the one shot image. It is no whimp of a tripod with the 2 inch legs. I would highly recommend. Polar aligning with Sharp Cap was a pleasure. Shipping was the same day!

    OPT Telescopes Celestron 9.25 SCT Advanced VX Telescope Bundle - CE-12046 Review
    Larry H.
    United States United States
    First telescope and mount

    There is a learning curve. It is winter and clear skies are less prevalent, but taking advantage of clear nights I have rapidly mastered polar alignment and star alignment. I purchased this for Astro photography and am making headway. I need to get guiding to work to open up my path for longer exposures. Ask me again in a few more days!

    Christine G.
    United States United States
    AVX upgrade from nexstar alt/az

    A huge upgrade in tracking and accuracy, the AVX has rekindled my excitement to do more astrophotos...what’s great is my Celestron 8se tube fits right in the mount and allows me to do visual and planetary with stunning clarity and for all the things I’ve bought in my hobby of astrophotography this is the best money was packaged great double heavy boxes and all the hardware was securely wrapped and fitted into the packaging and the shipping from OPT even during the lockdown was less than a week from them to Largo Florida...all in all a five star experience...wish I could give them an extra star lol thanks OPT!

    James B.
    United States United States
    Partial review of AVX mount

    Our library has several of these mounts which we set up on star gazing outreach nights. I based my personal purchase on the positive experience of the library mounts and that I can now use Starsense on a GEM. I don't have to do yoga each time I take it somewhere. So far starsense autoalignment is working well, just like it does on my Nexstar 8SE. I just received the ASI120MC and 30mm guide scope so I will be testing autoguiding once the rain and skies clear here in Yuma. Lastly, I try to purchase first from OPT due to their excellent customer support and rapid order response. Now waiting on ZWO ASIAIR pro preordered through OPT so I can add my EQ6 to easy control.

    Mikhaile S.
    United States United States
    Awesome mount/better Service

    It’s been a few weeks since I graduated from a nexstar alt az mount to the AVX. Though i plan on upgrading my OTA, this interim set up has been extraordinary. The avx is super easy to use and very intuitive. It’s slotted in nicely with my Celestron wifi adapter making it easy to control from my mobile devices, though controlling it with the hand controller was also a breeze. More than anything, working with OPT was the best part of my experience thus far. I was deciding between two mounts and their team helped me pick a mount that worked for my current set up with an eye to my growth in the future with a new OTA. OPT also price matched against a competitor without any questions thereby ensuring that I got the best deal on the mount. The mount is great. The service was better. Incredible.