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Optical Tube Assemblies

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.

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  1. TeleVue 85mm f/7 Refractor Kit Brass

    TeleVue - 85mm f/7 Refractor Kit - Brass

    Televue TV-85 (Complete) APO Refractor - Brass?  The Televue TV-85 is a superb travel scope, measuring only 21.5" (546mm) in length and weighing 9.6 lbs.?  23.6" (600mm) focal length combined with 3

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    Model#: BXC-3370

    Available - Typically ships in 1-3 Days

    Regular Price: $3,295.00

    Special Price: $2,395.00

  2. PrimaLuceLab AIRY ED100 Doublet Apochromatic Refractor

    PrimaLuce Lab - AIRY ED100 Doublet Apochromatic Refractor

    The PrimaLuce Lab AIRY ED100 is an exception; a premium optical quality 100mm aperture refractor featuring FPL-51 doublet ED lenses, a 2.7" focuser and an incredible mechanics made with CNC machined aluminum all at an affordable price!

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    Model#: AIRYED100

    In Stock

    $2,288.00

  3. Celestron EdgeHD 925 9.25" Optical Tube Assembly (OTA) - DEMO

    Celestron - EdgeHD 925 9.25" Optical Tube Assembly (OTA) - Fully Warranted - OPEN BOX

    The Celestron EdgeHD 925 catadioptric optical tube includes state of the art EdgeHD optical coatings to reduce the effect of coma, which is a major advantage for visual astronomy when adding the StarBright XLT coatings which increase light transmission.

    NOTE: This is a demo version.

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    Model#: CEL-91040-XLT-OPEN

    In Stock

    Regular Price: $2,299.00

    Special Price: $2,199.00

  4. Stellarvue 102mm APO Triplet Refractor

    Stellarvue - SVR102T 102mm f/7 APO Triplet Carbon Fiber Refractor

    The SVR102T is a 102mm APO triplet refractor by Stellarvue, with a f/7 focal ration and premium optics. Includes an interferometric test report and features a carbon fiber body for reduced temperature fluctuation, 2.5" rotating Stellarvue focuser, and padded carry case. ... Learn More
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    Model#: SVR102T-25SV

    Available - Typically ships in 1-3 Days

    $2,395.00

  5. Celestron EdgeHD 925 Optical Tube Assembly

    Celestron - EdgeHD 925 9.25" Optical Tube Assembly (OTA)

    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.

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    Model#: CEL-91040-XLT

    In Stock

    $2,299.00

  6. TeleVue - TV-85 Evergreen  85mm, f/7, APO (Doublet) Refractor

    TeleVue - TV-85 Evergreen 85mm, f/7, APO (Doublet) Refractor

    With APO performance and airline portability, the Tele Vue-85 has been delighting astronomy and birding enthusiasts and reviewers alike. ... Learn More
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    Model#: GXF-3371

    In Stock

    Regular Price: $2,425.00

    Special Price: $2,239.00

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