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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. PlaneWave 17" CDK Corrected Dall-Kirkham Carbon Fiber Truss Telescope

    PlaneWave - 17" CDK17 Corrected Dall-Kirkham Carbon Fiber Truss Telescope

    The latest member of the CDK family is the CDK17 New and Improved in 2013. The CDK optical design is the innovative solution for unsurpassed astro-imaging quality at an affordable price.

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    Model#: 170101
    We're offering the same deal as the CGE Pro. Save huge and get a free Night of Hands on Training at our Observatory plus 2.5% savings towards future accessories!
    $22,000.00

  2. Sky-Watcher USA - ProED 80mm Doublet APO Refractor

    Sky-Watcher USA - ProED 80mm Doublet APO Refractor

    Due to their unobstructed textbook-like diffraction patterns and exotic optical properties, the ED-APO produces the sharpest, highest quality imaging obtainable from any telescope optical design.

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    (48 States)
    Model#: S11100
    $649.00

  3. Sky-Watcher USA ProED 100mm Doublet APO Refractor

    Sky-Watcher USA - ProED 100mm Doublet APO Refractor

    Sky-Watcher is a leader in the design and manufacturer of ED-APO systems.  Sky-Watcher offers one of the most extensive lines of ED-APOCHROMATIC refractors in the world.

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    (48 States)
    Model#: S11120
    $749.00

  4. Vixen - 103mm ED103S (f/7.7) ED Apochromatic Refractor Optical Tube Assembly

    Vixen - 103mm ED103S (f/7.7) ED Apochromatic Refractor Optical Tube Assembly

    The newly designed high definition ED lens in Vixen's ED103S Refractor gives excellent optical performance in a short optical tube for easy handling.

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    (48 States)
    Model#: 5865
    27% sale while supplies last!

    Regular Price: $2,199.00

    Special Price: $1,595.00

  5. Vixen - 81mm ED81S (f/7.7) ED Apochromatic Optical Tube Assembly

    Vixen - 81mm ED81S (f/7.7) ED Apochromatic Optical Tube Assembly

    When The ED81S was introduced , it set a new standard for APO Refractors. The combination of better color correction from the new ED glass and brighter images from its fast f/7.

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    Model#: 5864
    30% sale while supplies last!

    Regular Price: $1,499.00

    Special Price: $1,049.30

  6. Vixen - 103mm AX103S (f/8) Apochromatic Refractor Optical Tube Assembly

    Vixen - 103mm AX103S (f/8) Apochromatic Refractor Optical Tube Assembly

    The built in Dual Speed Focuser enables coarse and fine focus adjustments. Sky at Night Magazine states: "With its excellent build quality and rich feature set, we thoroughly recommend this system if you’re looking to upgrade from your current setup".

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    (48 States)
    Model#: 5867
    $3,199.00

  7. Vixen - 95mm VMC95L (f/11) Modified Cassegrain Optical Tube Assembly

    Vixen - 95mm VMC95L (f/11) Modified Cassegrain Optical Tube Assembly

    The Vixen VMC95L, is a 95 mm (3.7 inch) aperture modified Cassegrain f/11 optical tube assembly.The VMC95L is intriguing in its own right with interesting features including a curved vane Secondary Mirror Spider to reduce diffraction effects

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    (48 States)
    Model#: 2614
    10% sale while supplies last!

    Regular Price: $259.00

    Special Price: $233.10

  8. Vixen - 330mm VMC330L (f/13) Maksutov-Cassegrain Optical Tube Assembly

    Vixen - 330mm VMC330L (f/13) Maksutov-Cassegrain Optical Tube Assembly

    The VIXEN VMC330L telescope is a unique catadioptric telescope. With two mirrors and two high-precision corrector lenses, one of which is a meniscus, the VMC330L produces sharp images with no hint of false color

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    (48 States)
    Model#: 5832
    $14,999.00

  9. Vixen - 110mm VMC110L (f/9.4) Modified Cassegrain Optical Tube Assembly

    Vixen - 110mm VMC110L (f/9.4) Modified Cassegrain Optical Tube Assembly

    One of the best multi purpose Grab and Go Reflector Telescopes. This is a compact optical tube, with features found on our higher end telescopes.

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    (48 States)
    Model#: 26052
    $299.00

  10. Vixen R200SS Optical Tube Assembly

    Vixen - 200mm R200Ss (f/4) Newtonian Reflector Optical Tube Assembly

    The telescope's large aperture and compact body make it ideally suited for astrophotography of nebulae, star clusters and comets. The use of the optional coma corrector allows for a sharp coma-free image from edge to edge, and the rack and pinion focuser, with an adapter, accepts 2 eyepieces.

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    (48 States)
    Model#: 5869
    10% sale while supplies last!

    Regular Price: $1,599.00

    Special Price: $1,439.10

  11. Vixen 200mm VC200L OTA

    Vixen - 200mm VC200L (f/9) Catadioptrical Reflector Optical Tube Assembly

    The VC200L is designed for Astro Imaging.   Even at the edge of the 35mm film format (larger CCD chips) stars are sharp ( smaller than 15 micrometers).

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    (48 States)
    Model#: 5870

    Regular Price: $1,899.00

    Special Price: $1,299.00

  12. Vixen - 115mm ED115S (f/7.7) ED Apochromatic Optical Tube Assembly

    Vixen - 115mm ED115S (f/7.7) ED Apochromatic Optical Tube Assembly

    The astro-photographer will be especially pleased with the high contrast images through this telescope and the full objective diameter of 4".

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    (48 States)
    Model#: 5866
    $2,999.00

  13. Vixen - 200mm VMC200L (f/9.75) Catadioptrical Reflector Optical Tube Assembly

    Vixen - 200mm VMC200L (f/9.75) Catadioptrical Reflector Optical Tube Assembly

    The VMC200L is a unique catadioptric optical system. It incorporates a primary mirror and a meniscus corrector just before a secondary mirror. By doing so, light is corrected twice on the optical path.

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    (48 States)
    Model#: 5829
    10% off while supplies last!

    Regular Price: $1,199.00

    Special Price: $1,025.00

  14. Lunt Engineering 70mm ED Doublet OTA

    Lunt Engineering - 70mm ED Doublet OTA

    A new optical tube by Lunt, the 70mm ED Doublet!

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    FREE SHIPPING
    (48 States)
    Model#: LE70OTA
    $399.00

  15. Orion - 180mm Maksutov-Cassegrain Telescope Optical Tube

    Orion - 180mm Maksutov-Cassegrain Telescope Optical Tube

    Looking for something to satisfy your appetite for power? Try a big Mak! For the most demanding enthusiast, our Orion 180mm Maksutov-Cassegrain Telescope sets a new standard for superb high-power performance in a remarkably compact design.

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    Model#: 09969
    $1,219.95

  16. Sky-Watcher USA - Quantum 100 ED APO Triplet

    Sky-Watcher USA - Quantum 100 ED APO Triplet

    Sky-Watcher Quantum top of the line ED-APO refractors offer premium optical performance for discriminating amateur astronomers and imagers

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    FREE SHIPPING
    (48 States)
    Model#: S11160
    $2,999.00

  17. Celestron EdgeHD 8 Optical Tube Assembly (CG5)

    Celestron - EdgeHD 8 Optical Tube Assembly (CG5)

    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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    FREE SHIPPING
    (48 States)
    Model#: 91031-XLT
    Summer Imaging Special! Ends 8/31/14

    Regular Price: $1,299.00

    Special Price: $1,169.00

  18. Takahashi - Epsilon 180ED Carbon Fiber  f/2.8 Hyperbolic Flat-Field Astrograph OTA - Limited Production

    Takahashi - Epsilon 180ED Carbon Fiber f/2.8 Hyperbolic Flat-Field Astrograph OTA - Limited Production

    This first addition to the new Epsilon Series introduces the newly designed ED corrector and fast speed of f/2.8. This fast field photo/visual astrograph is perfect for digital 35mm cameras and CCD cameras.

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    FREE SHIPPING
    (48 States)
    Model#: TEK0182
    $5,400.00

  19. Meade 115mm Series 6000 ED Triplet APO (f/7) OTA

    Meade - 115mm Series 6000 ED Triplet APO (f/7) OTA

    Meade 115mm ED Triplet APO Refractor #4507-00-05. For crisp wide field observing and imaging, nothing can beat a true triple-element Apochromatic Refractor (APO)

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    FREE SHIPPING
    (48 States)
    Model#: 4507-00-05
    $1,999.00

  20. Takahashi TOA-150B Refractor Optical Tube Assembly

    Takahashi - TOA-150B Refractor Optical Tube Assembly

    The Takahashi TOA-150B optical tube assembly is based upon an apochromatic refractor design which is beneficial to inhibit uncessary color often exposed when viewing bright stars and/or planets.

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    FREE SHIPPING
    (48 States)
    Model#: TOA-150B
    $11,885.00

Items 121 to 140 of 162 total

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