Celestron 8 Inch Schmidt-Cassegrain OTA with CG-5 Mount Plate

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  • $975.00
  • Regular price $1,059.95

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Accessories Added

  • 203.2 mm (8 Inch) Schmidt-Cassegrain Optical Tube Assembly
  • StarBright XLT Optical Coatings
  • Use your 1.25 Inch Accessories
  • 6x30 Finderscope
  • The Dovetail Plate for CG-5 Advanced Series Mounts



Celestron 8 Inch Schmidt-Cassegrain OTA with CG-5 Mount Plate

  • Telescope Aperture: 8"
  • Telescope Focal Ratio: f/10
  • Telescope Focal Length: 2032mm
  • Optical Coatings: StarBright XLT
  • Limiting Stellar Magnitude: 14
  • Lowest Useful Magnification: 29x
  • Highest Useful Magnification: 480x
  • Light-Gathering Power Compared to Human Eye : 843x
  • Diagonal Included: Yes - 1.25" Star Diagonal
  • Telescope Eyepiece(s) Included: Yes - 1 Eyepiece Included
  • Finder Included: Yes - 6 x 30 Finder Included
  • Focuser Style: Internal Moving Primary
  • Focuser Size: Internal Focuser with 1.25" Rear Cell Adapter
  • Focuser Speed: Single Speed
  • Telescope OTA Length: 17in.
  • Telescope OTA Weight: 12.5lbs.
  • Telescope Warranty Period: 2 years



This Celestron 203.2 mm (8 Inch) Schmidt-Cassegrain Optical Tube Assembly (OTA) with CG-5 Mount Plate is available individually to be used with your favorite mount. Each OTA is made to the same exacting standards as those used on all their high-quality telescopes. All optical surfaces are coated with StarBright XLT coatings. These tube assemblies are equipped with the same dovetail mounting bar as used on CG-5 style mounts for easy attachment to a variety of popular mounts (see below). 
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.

The Celestron C8 is Celestron's first new Schmidt-Cassegrain optical system in over a decade. The new 8 Inch Schmidt-Cassegrain features a precision optical system with 2032 mm focal length, focal ratio of f/10, and comes standard with Celestron's StarBright XLT coatings at no extra cost.

What's more, you have Celestron's guarantee of uncompromising quality backed-up with a Two Year warranty. Celestron warrants your telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship.


    OPT Product Number: CE-91020-XLT

    Please Note: This optical tube assembly will fit on the Celestron CG-5 and Advanced VX mounts as well as the Meade LXD55/75, the older style Losmandy GM-8, and some Vixens. It will not attach to mounts that accept a 3" dovetail, such as the CGE, G-11, Paramount, or newer GM-8. If you are unsure, please give us a call before you buy. 


    Aperture203 mm (8")
    Focal Length2032 mm
    Focal Ratiof/10
    Free ShippingYes
    Optical CoatingsCelestron XLT
    Optical DesignSCT
    OTA Length17"
    OTA Mount TypeCG 5 Dovetail
    OTA Weight12.5 lbs.
    Telescope SeriesCelestron Optical Tubes
    Warranty2 Year Warranty


    • 203.2 mm (8 Inch) Schmidt-Cassegrain XLT OTA
    • 6x30 Optical Finderscope
    • 1.25 Inch Star Diagonal
    • 1.25 Inch Eyepiece/ 25 mm, 81x Mag.
    • Dovetail Mounting Plate, for CG-5 mounts
    • 2 Year Warranty




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    Ask a Question
    • Is it possible to mount this on a 1990's era C-8 fork mount? Are OTA bolts in the correct places? Thanks.

      Great question! It appears that the bolts are not in the correct place for this setup.

    • Is the OTA fastar ready?

      Sean, The OTA's with the CG-5 plate are fastar compatible and we do have them in stock.

    • Will it accept and work with 2" diagonals and eyepieces?

      Yes, as long as you either use a 2" SCT style diagonal or get a SCT to 2" adapter like the OS-ASCT2.