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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. PrimaLuceLab AIRY ED72 Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY ED72 72mm Doublet Apochromatic Refractor

    PrimaLuce Lab ED72 is a 72mm refractor telescope featuring apochromatic doublet optics and premium grade mechanics. Small and lightweight, the 72mm makes a perfect travel companion for both observing and astro-imaging. Includes 2" hybrid focuser with 2" on axis lock adapter, retractible dew shield, PLUS system dual scope rings, and a hard carry case. ... Learn More

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    Model#: AIRYED72
    $699.95

  2. PrimaLuceLab AIRY ED100 Doublet Apochromatic Refractor

    PrimaLuceLab - 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
    $1,759.95

  3. PrimaLuceLab AIRY Black 90T 90mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY Black 90T 90mm Triplet Apochromatic Refractor

    An excellent refractor for those searching for a great quality lens with the best design and parts, all in one item yet compact, lightweight and highly portable.

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    (48 States)
    Model#: AIRYBLACK90T
    $1,850.99

  4. PrimaLuceLab AIRY 80mm Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY APO80 80mm Doublet Apochromatic Refractor

    The PrimaLuce Lab APO80 is an 80mm refractor telescope featuring apochromatic doublet optics and premium grade mechanics. Compact in design with a focal length of just 500mm, the 80mm makes an excellent travel companion for both observing and astro-imaging. Includes 2" hybrid focuser with 2" on axis lock adapter, retractible dew shield, PLUS system dual scope rings, and a hard carry case. ... Learn More
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    Model#: APO80
    $999.00

  5. PrimaLuceLab AIRY 65mm Quadriplet Apochromatic Refractor

    PrimaLuceLab - AIRY 65mm Quadriplet Apochromatic Refractor with Field Flattener

    AIRY APO65F is a little and compact apochromatic refractor tube with 65mm diameter and 420mm focal length making it excellent for taking long exposures due to its quadruplet optics (FPL - 53)

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    (48 States)
    Model#: APO65F
    $999.95

  6. PrimaLuceLab AIRY 150mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 150mm Triplet Apochromatic Refractor

    Call it "The Boss"! The PrimaLuceLab's  larger diameter apochromatic refractor optical tube comes with an extraordinary lens, air spaced apochromatic triplet, with 150mm diameter, an excellent value for an apochromatic refractor! Thanks to FPL-53 lens, AIRY APO150T offers a perfect chromatic correction and great performances for all the applications, both visual and photographic.

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    Model#: APO150T
    $9,299.00

  7.  PrimaLuceLab AIRY 130mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 130mm Triplet Apochromatic Refractor

    The AIRY APO130T is an apochromatic refractor featuring large diameter (making it good for deep sky and high magnification planetary astro-imaging as well as visual use), extraordinary optical quality (all credit goes to the FPL-53 air spaced lens) and a strong mechanical development. All together with by fantastic PLUS rings and OnAxisLock locking system.

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    Model#: APO130T
    $4,299.00

  8. PrimaLuceLab AIRY 120mm Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY 120mm Doublet Apochromatic Refractor

    The PrimaLuce Lab APO100 100mm doublet refractor offers Individuals searching for maximum quality in an apochromatic refractor at a reasonable price, an answer. Don't compromise!: large diameter optics, excellent chromatic aberration correction, high-end mechanics, and a remarkable focuser can be yours.

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    Model#: AIRYAPO120
    $2,999.95

  9.  PrimaLuceLab AIRY 104mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 104mm Triplet Apochromatic Refractor

    PrimaLuceLab is glad to present the first OTA of the new T-series which is designed for the customer thriving for excellent optical performances with good mechanical quality with no compromises!

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    (48 States)
    Model#: AIRYAPO104T
    $3,299.00

  10. PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 20"

    PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 20"

    This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.

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    Model#: IR DK20
    $35,000.00

  11. PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 17"

    PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 17"

    This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.

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    Model#: IR DK17
    $24,000.00

  12. PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 12.5"

    PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 12.5"

    This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.

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    Model#: IR DK12.5
    $13,800.00

  13. 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

  14. 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
    $22,000.00

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

    PlaneWave - 14" CDK Corrected Dall-Kirkham Carbon Fiber Telescope

    The PlaneWave Instruments CDK14 is a 14 inch (0.36 m) f/7.2 Corrected Dall-Kirkham Astrograph telescope. The CDK14 covers a 70 mm field of view without any field curvature, off-axis coma, or astigmatism.

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    Model#: 140101
    $15,000.00

  16. 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

    Regular Price: $12,000.00

    Special Price: $9,995.00

  17. PlaneWave 0.7m CDK Corrected Dall-Kirkham Telescope

    PlaneWave - 0.7m CDK Corrected Dall-Kirkham Telescope

    PlaneWave Instruments now brings a fully automated observatory class telescope to the market in the CDK700, a 0.7 meter, Alt-Az telescope system.

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    Model#: 700101
    $200,000.00

  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 ShortTube 80-T Refractor Telescope

    Orion - ShortTube 80-T Refractor Telescope

    The Orion ShortTube 80-T Optical Tube assembly is an f/5 multi-coated 400mm refractor that provides excellent wide field of views with excellent contrast for viewing planets.

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    Model#: 09946
    $189.10

  20. Orion Premium 190mm F/5.3 Mak-Newt Astrograph Telescope OTA

    Orion - Premium 190mm F/5.3 Mak-Newt Astrograph Telescope OTA

    As one of our satisfied customers put it, the Orion 190mm Maksutov-Newtonian Astrograph Telescope gives "BIG APO Refractor-like performance at 1/3 the cost", not to mention the savings over smaller premium astrographs.

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    Model#: 09978
    $1,599.95

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