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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. Celestron - C11-A XLT  (CGE) 11" Optical Tube Assembly (OTA)

    Celestron - C11-A XLT (CGE) 11" Optical Tube Assembly (OTA)

    Celestron C-11A OTA with Starbright XLT.

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    Model#: CEL-91036-XLT
    $1,945.95

  2. Celestron EdgeHD 925 Optical Tube Assembly

    Celestron - EdgeHD 925 9.25" Optical Tube Assembly (OTA)

    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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    Model#: CEL-91040-XLT
    Superior Optics - Superior Savings! Ends August 31st!

    Regular Price: $2,299.00

    Special Price: $2,099.00

  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#: MEA-4507-00-05
    $1,999.00

  4. 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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    (48 States)
    Model#: EDT-127075-CF
    $1,999.99

  5. DayStar Filters SolaREDi 66mm Dedicated Solar Telescope Chromosphere

    DayStar Filters - SolaREDi 66mm Dedicated Solar Telescope Chromosphere

    The DayStar Instrument SolaREDi 66 Solar Telescope is a state of the art designed solar instrument specifically targeted for observing Hydrogen Alpha wavelength with the 2.3X telecentric barlow lens.

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    Model#: DSR66C
    $1,995.00

  6. DayStar Filters SolaREDi 66mm Dedicated Solar Telescope Prominence

    DayStar Filters - SolaREDi 66mm Dedicated Solar Telescope Prominence

    The DayStar Instrument SolaREDi 66 Solar Telescope is a state of the art designed solar instrument specifically targeted for observing Hydrogen Alpha wavelength with the 2.3X telecentric barlow lens.

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    Model#: DSR66P
    $1,995.00

  7. Explore Scientific ED102 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific - ED102 Air Spaced Carbon Fiber Triplet Refractor Telescope with Bresser EXOS2GT Mount

    Explore Scientific uses ED (Extra-low Dispersion) FCD1 (Dense Fluor Crown) glass developed and manufactured by Hoya Optical of Japan.

    This German Equatorial mount is equipped with motors on both axes, allowing the mount to track astronomical objects accurately. The precision gears allow operation with a minimum of backlash on all nine slewing speeds.

    Explore Scientific Instruction Booklet for Triplet Refractors

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    Model#: EDT10207CF-EXOS2GT
    $1,999.99

  8. Borg 90FL Optical Tube Assembly (Black) - camera is NOT Included

    Borg - 90FL Optical Tube Assembly (Black)

    This 90 Flourite from Borg package comes with seven components.

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    (48 States)
    Model#: 6291
    $1,965.00

  9. Explore Scientific - ED127 APO Carbon Fiber Triplet Refractor Telescope w/ Flattener

    Explore Scientific - ED127 APO Carbon Fiber Triplet Refractor Telescope w/ Flattener

    Special Buy! Get a 127mm APO Carbon Fiber Triplet Refractor with a 2" Field Flattener for just $1999! A savings of $150 off standard retail! This is NEW product but discontinued product. Full manufacturer warranty included. Quantity limited. 

    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.

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    Model#: EDT-127075CF-FF2

    Regular Price: $2,148.99

    Special Price: $1,999.99

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