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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. Explore Scientific - ED127 Classic White f/7.5 Air Spaced Triplet with Hoya FCD100 Optics and Starlight Feathertouch Two-Speed TRUE 3" Focuser
  2. Explore Scientific - ED127 f/7.5 Air-Spaced Carbon Fiber Triplet Refractor with Retractable Dew Shield and Starlight Feathertouch Two-Speed TRUE 3" Focuser
  3. Meade - 12" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Meade - 12" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    The Meade Instruments 12" f/8 ACF Optical Tube Assembly (OTA) features a 12” aperture, f/8 optical system with Meade’s Advanced Coma Free (ACF) optics and high-contrast baffling that ensures crisp, pinpoint imaging to the very edge of the field.

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    (48 States)
    Model#: MEA-1208-80-01

    In Stock

    Save until October 31st!

    Regular Price: $3,299.00

    Special Price: $2,959.00

  4. Stellarvue 102mm APO Triplet Refractor

    Stellarvue - SVR102T 102mm f/7 APO Triplet CF Refractor - 3" Feathertouch Focuser

    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, 3" precision dual speed FeatherTouch focuser, and padded carry case. ... Learn More
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    (48 States)
    Model#: SVR102T-3FT

    Available - Typically ships in 1-3 Days

    $2,795.00

  5. Lunt Engineering - 152mm f/7.9 ED APO Refractor

    Lunt Engineering - 152mm f/7.9 ED APO Refractor

    A 6" f/7.9 ED APO with the glass combination Chengdu CDGM FK61 and Lanthanum H-LAF53.

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    Model#: LE-152ED

    Available

    $2,990.00

  6. Celestron EdgeHD 1100 11"  Optical Tube Assembly - DEMO

    Celestron - EdgeHD 1100 11" Optical Tube Assembly - Full Factory Warranty - OPEN BOX

    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.....

    NOTE: This is a demo version.

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    Model#: CEL-91050-XLT-OPEN

    In Stock

    Regular Price: $3,399.00

    Special Price: $2,850.00

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