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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. Vixen A70Lf OTA

    Vixen - 70mm A70Lf (f/12.9) Achromatic Refractor Optical Tube Assembly*

    The A70Lf, although inexpensive, is not a toy telescope. Many amateurs begin with and enjoy countless hours under the stars with this instrument It has the same quality glass and exacting workmanship that goes into our much larger instruments

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    Model#: 2602
    30% sale while supplies last!

    Regular Price: $139.00

    Special Price: $97.99

  2. Vixen - 110mm VMC110L (f/9.4) Modified Cassegrain Optical Tube Assembly

    Vixen - 110mm VMC110L (f/9.4) Modified Cassegrain Optical Tube Assembly

    One of the best multi purpose Grab and Go Reflector Telescopes. This is a compact optical tube, with features found on our higher end telescopes.

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    (48 States)
    Model#: 26052
    $299.00

  3. Vixen - 103mm ED103S (f/7.7) ED Apochromatic Refractor Optical Tube Assembly

    Vixen - 103mm ED103S (f/7.7) ED Apochromatic Refractor Optical Tube Assembly

    The newly designed high definition ED lens in Vixen's ED103S Refractor gives excellent optical performance in a short optical tube for easy handling.

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    (48 States)
    Model#: 5865
    27% sale while supplies last!

    Regular Price: $2,199.00

    Special Price: $1,595.00

  4. TeleVue - TV-85 Evergreen  85mm, f/7, APO (Doublet) Refractor

    TeleVue - TV-85 Evergreen 85mm, f/7, APO (Doublet) Refractor

    With APO performance and airline portability, the Tele Vue-85 has been delighting astronomy and birding enthusiasts and reviewers alike. ... Learn More
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    (48 States)
    Model#: GXF-3371

    Regular Price: $2,350.00

    Special Price: $2,195.00

  5. TeleVue - TV-60 OTA   60mm, f/6, APO (Doublet) Refractor.

    TeleVue - TV-60 OTA 60mm, f/6, APO (Doublet) Refractor.

    Tele Vue-60 OTA 60mm, f/6, APO (Doublet) Refractor.

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    (48 States)
    Model#: TVO-2460

    Regular Price: $1,195.00

    Special Price: $795.00

  6. TeleVue - NP-127is Imaging System

    TeleVue - NP-127is Imaging System

    CCD cameras have challenged telescope optics beyond anything ever placed at the focal plane. I knew our APO objectives were up to the challenge, and with the proper tweaks would be extraordinary tools for the imager

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    (48 States)
    Model#: NPI-5053
    $6,985.00

  7. TeleVue - NP-127is 127mm, f/5.2 APO (Nagler-Petzval) Refractor - Imaging/Visual

    TeleVue - NP-127is 127mm, f/5.2 APO (Nagler-Petzval) Refractor - Imaging/Visual

    Both the optical and mechanical designs have been revised to reduce atmospheric defocusing sensitivity (visually the difference is virtually indiscernible)

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    (48 States)
    Model#: NPI-5054

    Regular Price: $8,995.00

    Special Price: $6,895.00

  8. TeleVue - NP-101is 101mm, f/5.4 APO (Nagler-Petzval) Refractor - Imaging/Visual

    TeleVue - NP-101is 101mm, f/5.4 APO (Nagler-Petzval) Refractor - Imaging/Visual

    CCD cameras have challenged telescope optics beyond anything ever placed at the focal plane. I knew our APO objectives were up to the challenge, and with the proper tweaks would be extraordinary tools for the imager.

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    (48 States)
    Model#: NPI-4057

    Regular Price: $5,800.00

    Special Price: $3,795.00

  9. TeleVue 85mm f/7 Refractor Kit Brass

    TeleVue - 85mm f/7 Refractor Kit - Brass

    Televue TV-85 (Complete) APO Refractor - Brass?  The Televue TV-85 is a superb travel scope, measuring only 21.5" (546mm) in length and weighing 9.6 lbs.?  23.6" (600mm) focal length combined with 3

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    (48 States)
    Model#: BXC-3370

    Regular Price: $3,295.00

    Special Price: $2,395.00

  10. TeleVue - 85 Complete 85mm, f/7, APO (Doublet) Refractor - Ivory

    TeleVue - 85 Complete 85mm, f/7, APO (Doublet) Refractor - Ivory

    Televue TV-85 Complete APO Refractor - Ivory?  The Televue TV-85 is a superb travel scope, measuring only 21.5" (546mm) in length and weighing 8 lbs.?  23.6" (600mm) focal length combined with 3

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    FREE SHIPPING
    (48 States)
    Model#: WXC-3370
    $2,495.00

  11. TeleVue - 76 Complete 76mm, f/6.3, APO (Doublet) Refractor- Ivory

    TeleVue - 76 Complete 76mm, f/6.3, APO (Doublet) Refractor- Ivory

    Complete Includes: Custom soft case, Screw-on lens cover, Sliding dew shield, Plossl eyepiece, 2" focuser, 2" diagonal, 1 1/4" adapter, Ivory Powdercoat finish or Evergreen Powercoat

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    (48 States)
    Model#: WXC-3063
    $1,725.00

  12. TeleVue - 60 Spotting Scope PACKAGE

    TeleVue - 60 Spotting Scope PACKAGE

    TELEVUE 60 PACKAGE INCLUDES:* TeleVue 60 Scope OTA* Custom fitted carry bag* 45 degree Image Erecting Prism* 8-24mm (15-45x) Zoom* 5mm Nagler Type 6 (72x)* Qwik-Point finder

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    (48 States)
    Model#: TSP-2460
    $1,474.00

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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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    FREE SHIPPING
    (48 States)
    Model#: TLK2502
    $9,250.00

  19. 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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    FREE SHIPPING
    (48 States)
    Model#: TLK2501
    $7,895.00

  20. 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: $3,670.00

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