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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 152mm f/8 Carbon Fiber Triplet Refractor Telescope with 3" Focuser

    Explore Scientific - 152mm f/8 Carbon Fiber Triplet Refractor Telescope with 3" Focuser

    The Explore Scientific ED152 refractor utilizes a carbon fiber for a lightweight optical tube that resists fluctuations in temperature changes, saving you the annoyance of refocusing making it particularly well suited to astro-photography.

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    (48 States)
    Model#: TED15208CFC3
    Offer ends October 31, 2014!

    Regular Price: $5,999.99

    Special Price: $5,299.99

  2. DIAGONAL NOT INCLUDED

    Lunt Engineering - 102mm ED Doublet OTA

    A new optical tube by Lunt, the 102mm ED Doublet! With a slow focal ratio of f/7, this optical tube is an excellent choice for observation of the moon, sun, and planets. When using solar filter, this telescope is great for sun observing!

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    FREE SHIPPING
    (48 States)
    Model#: LE102OTA
    $729.00

  3. Celestron C8-A XLT (CG-5) Optical Tube Assembly

    Celestron - C8-A XLT (CG-5) Optical Tube Assembly

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

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    (48 States)
    Model#: 91020-XLT

    Regular Price: $1,049.00

    Special Price: $849.00

  4. Optical Guidance Systems - Classic Cassegrain 12.5 " f/9 - Optical Tube Assembly

    Optical Guidance Systems - Classic Cassegrain 12.5 " f/9 - Optical Tube Assembly

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    (48 States)
    Model#: CC12.5
    $19,900.00

  5. Optical Guidance Systems - Classic Cassegrain 10 " f/9 Truss or closed tube - Optical Tube Assembly
  6. RC24

    Optical Guidance Systems - Ritchey-Chretien 24 " f/8 - Optical Tube Assembly

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    (48 States)
    Model#: RC24
    $83,900.00

  7. RC20

    Optical Guidance Systems - Ritchey-Chretien 20 " f/8.1 - Optical Tube Assembly

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    (48 States)
    Model#: RC20
    $58,900.00

  8. RC16

    Optical Guidance Systems - Ritchey-Chretien 16 " f/8.4 - Optical Tube Assembly

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    (48 States)
    Model#: RC16
    $37,900.00

  9. Optical Guidance Systems - Ritchey-Chretien 14.5 " f/7.9 - Optical Tube Assembly

    Optical Guidance Systems - Ritchey-Chretien 14.5 " f/7.9 - Optical Tube Assembly

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    (48 States)
    Model#: RC14.5
    $24,900.00

  10. RC12.5

    Optical Guidance Systems - Ritchey-Chretien 12.5 " f/9 - Optical Tube Assembly

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    (48 States)
    Model#: RC12.5
    $19,900.00

  11. RC10
  12. Optical Guidance Systems - Classic Cassegrain 14.5 " f/7.9 - Optical Tube Assembly

    Optical Guidance Systems - Classic Cassegrain 14.5 " f/7.9 - Optical Tube Assembly

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    FREE SHIPPING
    (48 States)
    Model#: CC14.5
    $24,900.00

  13. Optical Guidance Systems - Classic Cassegrain 16 " f/8.4 - Optical Tube Assembly

    Optical Guidance Systems - Classic Cassegrain 16 " f/8.4 - Optical Tube Assembly

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    (48 States)
    Model#: CC16
    $37,900.00

  14. PlaneWave 20" CDK Corrected Dall-Kirkham Carbon Fiber Truss Telescope

    PlaneWave - 20" CDK20 Corrected Dall-Kirkham Carbon Fiber Truss Telescope

    The new CDK optical design is the innovative solution for unsurpassed astroimaging quality at an affordable price

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    Model#: 200101
    $32,500.00

  15. PlaneWave 12.5" CDK Corrected Dall-Kirkham Carbon Fiber Telescope

    PlaneWave - 12.5" CDK12.5 Corrected Dall-Kirkham Carbon Fiber Telescope

    The new CDK optical design is the innovative solution for unsurpassed astroimaging quality at an affordable price.

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    Model#: 125101
    $12,000.00

  16. Orion 10" f/8 Ritchey Cretien Optical Tube Assembly

    Orion - 10 " f/8 Ritchey Cretien Optical Tube Assembly

    Go after even the most elusive and faint deep-sky targets with the Orion 10" f/8.0 Ritchey-Chretien Astrograph. Featuring virtually coma-free optics for superb imaging performance, the Orion 10" f/8.0 Ritchey-Chretien Astrograph boasts a plethora of deluxe features

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    Model#: 8961
    $2,694.95

  17. Orion - 8 " f/8 Ritchey Cretien Optical Tube Assembly

    Orion - 8 " f/8 Ritchey Cretien Optical Tube Assembly

    * Ritchey-Chretien optical design produces superb flat-field, coma-free images that are superior to those achievable with conventional reflector or Schmidt-Cassegrain telescopes * One of the most compact Ritchey-Chretien astrographs available, at ... Learn More
    Model#: 8958
    $1,195.95

  18. Orion - Starblast 4.5 Imaging Optical Tube Assembly

    Orion - Starblast 4.5 Imaging Optical Tube Assembly

    Simply the most affordable astrophotography-optimized telescope available! Big 4.5" primary mirror and fast f/4 focal ratio produce stunning images with short exposure times.

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    Model#: 09974
    $149.95

  19. Orion - 80mm f/11.4 Refractor Telescope Optical Tube

    Orion - 80mm f/11.4 Refractor Telescope Optical Tube

    * Ideal for use as a guide scope * Guiding enables long exposure astrophotography * 1.25" focuser * One-year limited warrantyThis quality Orion 80mm F/11 ... Learn More
    Model#: 07380
    $126.95

  20. Optical Guidance Systems - Classic Cassegrain 24 " f/8 - Optical Tube Assembly

    Optical Guidance Systems - Classic Cassegrain 24 " f/8 - Optical Tube Assembly

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    FREE SHIPPING
    (48 States)
    Model#: CC24
    $83,900.00

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