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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. Takahashi Epsilon 180ED f/2.8 Hyperbolic Flat-Field Astrograph Optical Tube Assembly

    Takahashi - Epsilon 180ED f/2.8 Hyperbolic Flat-Field Astrograph OTA

    The Takahashi Epsilon-180ED (D=180mm, F/2.8), based on catadioptric telescope design (means association of lenses and mirrors) offers a fundamental innovation compared with Newton reflector or Schmidt astrograph.

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    (48 States)
    Model#: TEK0180

    In Stock

    $5,510.00

  2. Takahashi FS-60C OTA

    Takahashi - FS-60CB 60mm (f/5.9) Fluorite Refractor Optical Tube Assembly

    Are you looking for an extreme high quality refractor telescope to serve across a variety of purposes? Then look no more... Takahashi has your answer with the FS-60CB Fluorite Refractor

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    (48 States)
    Model#: TFK6004

    In Stock

    $860.00

  3. Takahashi TOA-150 Optical Tube Assembly

    Takahashi - TOA-150B Refractor Optical Tube Assembly

    The TOA-150 is the second Takahashi Ortho Apochromat to be developed by Takahashi. It features a newly designed triplet objective. This new design like its smaller companion the TOA-130 is absolutely color free

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    (48 States)
    Model#: TOK1501

    Available - Ships in 2-4 Days

    $11,870.00

  4. Takahashi Mewlon 210 Dall-Kirkham OTA

    Takahashi - Mewlon 210 Dall-Kirkham Optical Tube Assembly

    Dall-Kirkham Telescope combines refractor-like performance in a larger folded optic reflector design. The Takahashi Mewlon 210 at prime focus provides a focal length of 2415mm, focal ratio of f/11.5 and image circle of 18mm

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    (48 States)
    Model#: TLK2101

    In Stock

    $3,670.00

  5. 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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    (48 States)
    Model#: TEK0182

    Available - Ships in 2-4 Days

    $5,400.00

  6. Takahashi Mewlon 250CRS Dall-Kirkham OTA

    Takahashi - Mewlon 250CRS Dall-Kirkham Optical Tube Assembly

    When Takahashi developed the Mewlon Correctors it meant any Mewlon-250 or 300 ever made could be converted into a flat field corrected telescope.

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    (48 States)
    Model#: TLK2502

    Available - Ships in 2-4 Days

    $9,420.00

  7. Takahashi - Mewlon 300CRS Dall-Kirkham Optical Tube Assembly

    Takahashi - Mewlon 300CRS Dall-Kirkham Optical Tube Assembly

    Dall-Kirkham Telescopes by world-renowned TakahashiJapan© combines refractor-like performance in a larger folded optic reflector design. ... Learn More
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    (48 States)
    Model#: TLK3502

    Available - Ships in 2-4 Days

    $17,410.00

  8. Takahashi Epsilon 130D Astrograph

    Takahashi - Epsilon 130D Astrograph

    Takahashi introduced their Epsilon Series flat-field hyperbolic astrographs in the middle 1980’s. The Epsilon-130 was the smallest aperture and most portable of the series. Now Takahashi is re-introducing the new ε-130D digital version of this astrograph.

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    (48 States)
    Model#: TEK1300

    In Stock

    $3,030.00

  9. Takahashi - FC-100DF Steinheil Fluorite Doublet Apochromat Optical Tube Assembly - Imaging Model

    Takahashi - FC-100DF Steinheil Fluorite Doublet Apochromat Optical Tube Assembly - Imaging Model

    Takahshi has just introduced an updated version of the original FC-100 now called the FC-100D. It has been designed for the digital age.

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    (48 States)
    Model#: TFK10110

    In Stock

    $2,440.00

  10. Takahashi - FSQ-130ED Astrograph

    Takahashi - FSQ-130ED Astrograph

    The new Takahashi incorporates optics that use an exceptionally advanced design that produces a flat-field astrograph a with large highly illuminated field that is further enhanced with the new dedicated 645 reducer that produces a Ø70mm image circle at f/3.5.

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    (48 States)
    Model#: FQK0130

    In Stock

    $13,150.00

  11. Takahashi FSQ-106ED f/5 Astrograph Telescope with Feathertouch Focuser - DEMO

    Takahashi - FSQ-106ED f/5 Astrograph Telescope with Feathertouch Focuser - DEMO

    Well known for being excellent for film and CCD imaging, this scope has significantly longer backfocus at 178mm to accommodate most CCD cameras.

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    (48 States)
    Model#: FQK1061NU-DEMO

    In Stock

    Regular Price: $5,150.00

    Special Price: $4,795.00

11 Item(s)

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