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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.

Items 81 to 100 of 158 total

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  1. Meade - 14" LX200-ACF (f/10) Advanced Coma-Free OTA

    Meade - 14" LX200-ACF (f/10) Advanced Coma-Free OTA

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

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    Model#: 1410-60-00
    $5,499.00

  2. Meade - 16" LX200-ACF (f/10) Advanced Coma-Free OTA

    Meade - 16" LX200-ACF (f/10) Advanced Coma-Free OTA

    Meade now brings to market a sophisticated Catadioptric optical design favored by research facilities worldwide at a price many enthusiasts can afford.

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    Model#: 1610-60-00
    $9,999.00

  3. Meade - 20" LX400-ACF (f/8) Advanced Coma-Free OTA

    Meade - 20" LX400-ACF (f/8) Advanced Coma-Free OTA

    Meade - 20 " LX400-ACF OTA F/8.0 Advanced Coma-Free with UHTC ... Learn More
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    Model#: 2006-40-00
    $19,999.00

  4. RC10
  5. RC12.5

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

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    Model#: RC12.5
    $19,900.00

  6. 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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    Model#: RC14.5
    $24,900.00

  7. RC16

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

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    Model#: RC16
    $37,900.00

  8. RC20

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

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    Model#: RC20
    $58,900.00

  9. RC24

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

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    Model#: RC24
    $83,900.00

  10. Optical Guidance Systems - Classic Cassegrain 10 " f/9 Truss or closed tube - Optical Tube Assembly
  11. 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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    Model#: CC12.5
    $19,900.00

  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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    (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. Optical Guidance Systems - Classic Cassegrain 20 " f/8.1 - Optical Tube Assembly

    Optical Guidance Systems - Classic Cassegrain 20 " f/8.1 - Optical Tube Assembly

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    (48 States)
    Model#: CC20
    $58,900.00

  15. 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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    Model#: CC24
    $83,900.00

  16. 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

  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. Meade 12" LX200-ACF Optical Tube Assembly

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

    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!  

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    (48 States)
    Model#: 1210-60-00
    $2,999.00

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

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

    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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    (48 States)
    Model#: 1010-60-00
    $1,799.00

  20. Meade 8" LX200-ACF (f/10) Advanced Coma-Free OTA (UHTC)

    Meade - 8" LX200-ACF (f/10) Advanced Coma-Free OTA - (UHTC)

    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.

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    (48 States)
    Model#: 0810-60-00
    $1,299.00

Items 81 to 100 of 158 total

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