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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. TeleVue 127mm f/5.3 APO (Nagler-Petzval) Astrograph Refractor

    TeleVue - 127mm f/5.3 APO (Nagler-Petzval) Astrograph Refractor

    Tele Vue Optics and Finger Lakes Instrumentation have teamed together to create a "turn-key," wide-field imaging system dedicated to the astro-imager. ... Learn More
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    (48 States)
    Model#: NPF-5055
    $8,995.00

  2. TeleVue - 102i O.T.A. - Ivory

    TeleVue - 102i O.T.A. - Ivory

    The Tele Vue-102i OTA includes the following: * Hard Carrying Case * 1x Prism Compensator * 2" to 1

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    (48 States)
    Model#: WBO-4086
    $2,480.00

  3. TeleVue 102i Complete Ivory

    TeleVue - 102i Complete - Ivory

    The Tele Vue-102i complete package includes the following: * Hard Carrying Case * 1x Prism Compensator * Bino Vue Body * 2" to 1.25" Flat Top Adapter * 1

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    (48 States)
    Model#: WBC-4086
    $3,650.00

  4. Takahashi TSA-102S 102mm Triplet Super APO Refractor Optical Tube Assembly

    Takahashi - TSA-102S 102mm Triplet Super APO Refractor Optical Tube Assembly

    The TSA-10S2 is the first in the new TSA line of Takahashi triplet apochromats. The color free images produced will delight the lunar, planetary and deep sky observer with very high contract images with pin point stars.

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    (48 States)
    Model#: TSA0102
    $3,350.00

  5. 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
    $16,995.00

  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
    $9,250.00

  7. Mewlon 250 OTA

    Takahashi - Mewlon 250 Dall-Kirkham OTA - (BRC-250 Double Ring Tube Holder)

    The Mewlon combines refractor-like performance in a larger folded optic reflector design.The 250 optical tube assembly has 9.8" of aperture and a focal ratio of 12.

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    (48 States)
    Model#: TLK2501
    $7,895.00

  8. 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

    Regular Price: $4,238.00

    Special Price: $3,550.00

  9. 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
    $12,795.00

  10. 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
    $989.95

  11. Takahashi FC-100DL 100m f/9 Apochromatic Refractor

    Takahashi - FC-100DL 100mm f/9 Apochromatic Refractor Optical Tube Assembly

    Takahashi’s new FC-100DL fluorite apochromat is a new addition to the lightweight FC line of telescopes.

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    Model#: TFK10210
    $2,349.00

  12. 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
    $2,595.00

  13. 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
    $5,400.00

  14. 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
    $5,400.00

  15. 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
    $2,995.00

  16. Stellarvue 102mm APO Triplet Refractor

    Stellarvue - SVR102T 102mm f/7 APO Triplet CF Refractor - 3" Feathertouch Focuser

    The SVR102T is a 102mm APO triplet refractor by Stellarvue, with a f/7 focal ration and premium optics. Includes an interferometric test report and features a carbon fiber body for reduced temperature fluctuation, 3" precision dual speed FeatherTouch focuser, and padded carry case. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SVR102T-3FT
    $2,895.00

  17. Stellarvue 102mm APO Triplet Refractor

    Stellarvue - SVR102T 102mm f/7 APO Triplet Carbon Fiber Refractor

    The SVR102T is a 102mm APO triplet refractor by Stellarvue, with a f/7 focal ration and premium optics. Includes an interferometric test report and features a carbon fiber body for reduced temperature fluctuation, 2.5" rotating Stellarvue focuser, and padded carry case. ... Learn More
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    (48 States)
    Model#: SVR102T-25SV
    $2,395.00

  18. Stellarvue 130mm APO Triplet Refractor

    Stellarvue - SVA130T 130mm f/7 APO Triplet Refractor w/ 3" FeatherTouch Focuser

    Stellarvue's 130mm SVA103EDT f/7 Triplet APO refractor features a FeatherTouch 3" dual speed precision focuser, and includes a 2-1.25" adapter, dual hinged rings, an American made hard case. Interferometric test report included for proof of optic specifications. Add a 2" dielectric diagonal at a reduced price! ... Learn More
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    (48 States)
    Model#: SVA130T-3FT
    $3,995.00

  19. Stellarvue 130mm APO Triplet Refractor

    Stellarvue - SVA130T 130mm f/7 APO Triplet Refractor

    Stellarvue's 130mm SVA103EDT f/7 Triplet APO refractor features a Stellarvue rotating 2.5" dual speed focuser, and includes a 2-1.25" adapter, dual hinged rings, an American made hard case. Interferometric test report included for proof of optic specifications. Add a 2" dielectric diagonal at a reduced price! ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SVA130T-25SV
    $3,495.00

  20. Stellarvue SV80ST 80mm f/6 APO Triplet Refractor

    Stellarvue - SV80ST 80mm f/6 APO Triplet Refractor - 2.5" Feather Touch Focuser

    Stellarvue's SV80ST 80mm triplet refractor features apochromatic optics for crisp, color perfect views. 2.5" Feathertouch rack and pinion focuser with 1.25" reducing adapter. Add a Stellarvue 2" dielectric diagonal at a reduced price! ... Learn More
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    (48 States)
    Model#: SV080ST-25FT
    $1,695.00

Items 21 to 40 of 238 total

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