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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. 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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    (48 States)
    Model#: LE70OTA
    $399.00

  2. APM 100mm 45° ED-APO Binoculars with Interchangeable Eyepieces

    Lunt Engineering - 100mm 45° ED-APO Binoculars with Interchangeable Eyepieces

    This binocular is made for very high power use up to above 100 power.

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    (48 States)
    Model#: APM100ED-BINO
    $2,950.00

  3. Lunt Engineering 80mm ED Doublet OTA

    Lunt Engineering - 80mm ED Doublet OTA

    The Lunt 80mm ED Doublet OTA comes with fully multi-coated lenses that can be used for both night time and solar observing (with a solar filter!), depending on your choice.

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    (48 States)
    Model#: LE80OTA
    $449.00

  4. Lunt Engineering - 152mm f/7.9 ED APO Refractor

    Lunt Engineering - 152mm f/7.9 ED APO Refractor

    A 6" f/7.9 ED with the glass combination Chengdu CDGM FK61 and Lanthanum H-LAF53.

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    (48 States)
    Model#: APM-152-1200-FK61/LA-D-2.5ZTA
    $3,990.00

  5. 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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    (48 States)
    Model#: LE102OTA
    $729.00

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