Optical Tube Assemblies

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  1. Celestron - C8-A XLT (CG-5) 8" Optical Tube Assembly (OTA) - 91020XLT

    $825.95
    SKU: CEL-91020-XLT

    In stock

    There are three major components that make up the Star Bright XLT high transmission optical system design

    FREE SHIPPING(48 States)
  2. Celestron - C8-A XLT (CGE) 8" Optical Tube Assembly

    $795.95
    SKU: CEL-91024-XLT

    In stock

    There are three major components that make up the Star Bright XLT high transmission optical system design

    FREE SHIPPING(48 States)
  3. Celestron - C9.25-A XLT (CG-5) 9.25" Optical Tube Assembly

    $1,195.95
    SKU: CEL-91025-XLT

    In stock

    Celestron's high quality Schmidt Cassegrain design, available in an Optical Tube Assembly.

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  4. Celestron - C 9.25" XLT OTA w/ CGE Dovetail

    $1,195.95
    SKU: CEL-91027-XLT

    In stock

    Celestron's high quality Schmidt Cassegrain design, available in an Optical Tube Assembly.

    FREE SHIPPING(48 States)
  5. Celestron - C11-A XLT (CGE) 11" Optical Tube Assembly (OTA)

    $1,945.95
    SKU: CEL-91036-XLT

    In stock

    Celestron C-11A OTA with Starbright XLT.

    FREE SHIPPING(48 States)
  6. Celestron - C14-A XLT 14" Optical Tube Assembly

    $4,195.95
    SKU: CEL-91038-XLT

    Ships in 3-5 Days

    The 14” Schmidt-Cassegrain Celestron C14-A XLT is the upper-end OTA of the Schmidt-Cassegrain series. The StarBright XLT coatings help improve light transmissions to ensure the highest quality images are delivered through the

    FREE SHIPPING(48 States)
  7. Celestron - 80ED Refractor Optical Tube Assembly

    $450.00
    SKU: CEL-52280

    In stock

    The pinnacle of our ED scopes, this refractor is packed with great features and excellent optics. The refractor style 80ED (APO) features a 2" rack and pinion focuser and has a bracket that can adapt to a photo tripod or attach to Celestron's Advanced GT equatorial mount.

    FREE SHIPPING(48 States)
  8. Celestron - EdgeHD 925 9.25" Optical Tube Assembly (OTA)

    $2,299.00
    SKU: CEL-91040-XLT

    In stock

    The EdgeHD optical system takes all of the compact power popularized by the SCT and combines it with an improved high definition optical system for wide field, astrograph quality images.

    FREE SHIPPING(48 States)
  9. Celestron - EdgeHD 1100 11" Optical Tube Assembly 91050-XLT

    $3,399.00
    SKU: CEL-91050-XLT

    In stock

    EdgeHD optical system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with a set of field flattening lenses integrated into the baffle.....
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  10. Celestron - EdgeHD 1400 14" Optical Tube Assembly

    $5,799.00
    SKU: CEL-91060-XLT

    In stock

    The EdgeHD optical system takes all of the compact power popularized by the SCT and combines it with an improved high definition optical system for wide field, astrograph quality images.

    FREE SHIPPING(48 States)
  11. Celestron - EdgeHD 800 8" Optical Tube Assembly (OTA)

    $1,299.00
    SKU: CEL-91030-XLT

    In stock

    The EdgeHD optical system takes all of the compact power popularized by the SCT and combines it with an improved high definition optical system for wide field, astrograph quality images.

    FREE SHIPPING(48 States)
  12. Celestron - C5 5" Spotting Scope

    Regular Price: $549.95

    You Pay: $506.00

    Save Until April 30th!
    SKU: CEL-52291

    In Stock

    Celestron's C5 Spotting Scope is a 5" (127mm) aperture, 1250 mm f/10 Schmidt-Cassegrain optical system. Its optical excellence is the reason it was chosen by NASA for many space shuttle missions.

    Save Until April 30th!
    FREE SHIPPING(48 States)
  13. Celestron - C6-A-XLT (CG-5) 6" Optical Tube Assembly

    $479.95
    SKU: CEL-91010-XLT

    In stock

    6" Schmidt-Cassegrain Optical Tube Assembly, Fastar Capable, Aluminum Optical Tube, Celestron's premium StarBright XLT coatings

    FREE SHIPPING(48 States)
  14. Celestron - C11-A XLT (CG-5) 11" Optical Tube Assembly

    $1,745.95
    SKU: CEL-91067-XLT

    In stock

    Schmidt-Cassegrain optical tubes like the Celestron C11-A XLT have unique features that set them aside from pure reflectors and refractors.

    FREE SHIPPING(48 States)
  15. Explore Scientific - AR127 f/6.5 Air-Spaced Doublet Achromat Refractor

    $599.99
    SKU: EXP-DAR127065-01

    In stock

    AR127 f/6.5 Air-Spaced Doublet with EMD Coatings; Deluxe Two-Speed 2-inch Crayford Focuser; Cradle Rings with Handle and Vixen-Style Dovetail Mount; 8x50 Straight Finderscope; Enhanced 99% Reflective 2-inch Diagonal with 1.25-inch Adapter

    FREE SHIPPING(48 States)
  16. Explore Scientific - 152mm f/6.5 Achromatic Optical Tube Assembly

    Regular Price: $799.99

    You Pay: $679.99

    Limited Time Savings!
    SKU: EXP-DAR152065-01

    Ships in 3-5 Days

    The AR152 (six-inch), with its larger aperture optics gathers 44% more light over the AR127 (five-inch) model, providing much brighter images and higher resolution

    Limited Time Savings!
    FREE SHIPPING(48 States)
  17. Meade - 8" LX200-ACF f/10 Advanced Coma-Free OTA - (UHTC)

    $999.00
    SKU: MEA-0810-60-01

    In stock

    Meade now brings to market a sophisticated Catadioptric optical design favored by research facilities worldwide at a price many enthusiasts can afford.  Most professional applications are this style telescope or a gargantuan apochromatic refractor.

    FREE SHIPPING(48 States)
  18. Meade - 10" LX200-ACF f/10 Advanced Coma-Free OTA

    $1,699.00
    SKU: MEA-1010-60-01

    In stock

    Picture yourself sitting in your friend Bill's backyard, with your other colleagues and friends Janice, Frank,  Sue and Zeak. All of you have come together to commemorate Earth Hour

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  19. Meade - 12" LX200-ACF (f/10) Advanced Coma-Free OTA

    $2,899.00
    SKU: MEA-1210-60-01

    In stock

    With all these innovations and technological features built in, what's not to like about the Meade LX-200 ACF 12 inch Computerized Telescope - except maybe for the fact that you don't yet own one!  

    FREE SHIPPING(48 States)
  20. Meade - 14" LX200-ACF (f/10) Advanced Coma-Free OTA

    $7,799.00
    SKU: MEA-1410-60-01

    In Stock

    So, you're finally planning on buying your first telescope.

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Optical tube assemblies, commonly abbreviated by astronomers as OTAs are simply the tube of the telescope where the optics are internally located. OTAs can be helpful in a situation in which an observer has a compatible mount and doesn't want to buy a whole new telescope with a mount included. Optical Tube Assemblies can come in the form of Maksutov-Cassegrain, Astrographs, Reflectors, Refractors, Schmidt-Cassegrains and many others! With the right mounting connections and range of mount and tripod payload, OTAs are a great choice for changing optical type without changing the mount.