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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 APO Air Spaced Carbon Fiber Triplet Refractor Telescope *

    Explore Scientific - ED127 APO Air Spaced Carbon Fiber Triplet Refractor Telescope *

    The Explore Scientific 127mm f/7.5 Air-Spaced Triplet ED APO produces a visual experience that is often compared to much larger aperture reflector telescopes.

    Explore Scientific Instruction Booklet for Triplet Refractors

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    Model#: EDT-127075-CF
    Super Deal! Explore Scientific 20% OFF

    Regular Price: $2,499.99

    Special Price: $1,999.49

  2. Celestron C11-A XLT (CG-5) Optical Tube Assembly

    Celestron - C11-A XLT (CG-5) Optical Tube Assembly

    Schmidt-Cassegrain optical tubes like the Celestron C11-A XLT have unique features that set them aside from pure reflectors and refractors.

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    Model#: 91067-XLT
    $1,895.00

  3. 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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    Model#: 4507-00-05
    $1,999.00

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