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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. Opticstar ED80S Gold 80mm ED Fluorite Doublet Refractor OTA

    Opticstar - ED80S Gold 80mm ED Fluorite Doublet Refractor Optical Tube Assembly

    The Opticstar ED80S short-tube refractor is ideal as a portable scope and can be used for observing, imaging or as a guide scope.

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    (48 States)
    Model#: OSRED80S6

    Regular Price: $799.00

    Special Price: $759.05

  2. 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

  3. 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

  4. Borg - 77 ED II f/4.6 Astrograph Set (2178 + 7150 + 7137 + 7753 + 7835 + 7870)

    Borg - 77 ED II f/4.6 Astrograph Set (2178 + 7150 + 7137 + 7753 + 7835 + 7870)

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    (48 States)
    Model#: B07746
    $1,695.00

  5. 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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    Model#: FQK0130
    Call for pricing.

  6. Officina Stellare RiFAst 400 f/3.8 Optical Tube Assembly

    Officina Stellare - RiFAst 400 f/3.8 Optical Tube Assembly

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

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    Model#: RIFA400
    $25,650.00

  7. Officina Stellare RiFAst 300 f/3.8 Optical Tube Assembly - Full Carbon

    Officina Stellare - RiFAst 300 f/3.8 Optical Tube Assembly - Full Carbon

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

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    Model#: RIFA300FC
    $23,400.00

  8. Officina Stellare RiFAst 300 f/3.8 Optical Tube Assembly

    Officina Stellare - RiFAst 300 f/3.8 Optical Tube Assembly

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

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    Model#: RIFA300
    $18,900.00

  9. Meade 10" LX80 Schmidt-Cassegrain Optical Tube Assembly (OTA) w/UHTC

    Meade - 10" LX80 Schmidt-Cassegrain Optical Tube Assembly (OTA) w/UHTC

    The Meade 10" SC Schmidt-Cassegrain includes (254mm) f/10 optical tube with industry leading Ultra-High Transmission Coatings (UHTC) achieving 15% better light transmission than standard coatings

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    (48 States)
    Model#: 1010-08-00
    $1,199.00

  10. Explore Scientific - ED 152mm Carbon Fiber Edition f/8 Air Spaced Triplet Refractor with Rack and Pinion Focuser

    Explore Scientific - ED 152mm Carbon Fiber Edition f/8 Air Spaced Triplet Refractor with Rack and Pinion Focuser

    The 6" (152mm) aperture Explore Scientific ES152CF with JOC focuser uses a premium Hoya ED glass element and state-of-the-art optical multicoatings in its ... Learn More
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    (48 States)
    Model#: TED15208CF-C3
    $4,999.99

  11. 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
    FREE SHIPPING
    (48 States)
    Model#: NPF-5055
    $8,995.00

  12. MallinCam VRC-12 - 304mm Ritchey-Chretien Aluminum Optical Tube Assembly

    MallinCam - VRC-12 - 304mm Ritchey-Chrétien Aluminum Optical Tube Assembly

    At last, a video-Ritchey-Chrétien scope with the kind of high performance you expect from this configuration and yet will not drain your bank account. The Ritchey-Chrétien concept provides more precise images with greater clarity than the traditional Schmidt-Cassegrain (SCT) telescope.cts the scope to the mount.

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    (48 States)
    Model#: VRC-12
    $3,499.99

  13. MallinCam VRC-10 254mm True Ritchey-Chrétien  Dual Hyperbolic Optical Tube Assembly

    MallinCam - VRC-10 - 254mm True Ritchey-Chrétien Dual Hyperbolic Carbon Fiber Optical Tube Assembly

    MallinCam partnered with Guan Sheng Optical (GSO) in Taiwan to bring you this exceptional piece of astronomical equipment. The optical tubes have been calibrated in order to function in perfect harmony with MallinCam cameras. 

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    (48 States)
    Model#: VRC-10
    $2,899.99

  14. MallinCam VRC-8 203mm Hyperbolic Mirror True Ritchey-Chretien Aluminum Optical Tube Assembly

    MallinCam - VRC-8 - 203mm Hyperbolic Mirror True Ritchey-Chrétien Carbon Fiber Optical Tube Assembly

    At last, a video-Ritchey-Chrétien scope with the kind of high performance you expect from this configuration and yet will not drain your bank account. The Ritchey-Chrétien concept provides more precise images with greater clarity than the traditional Schmidt-Cassegrain (SCT) telescope. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: VRC-8-CF
    $1,499.99

  15. Officina Stellare - RiFAst 400 f/3.8 Optical Tube Assembly - Full Carbon

    Officina Stellare - RiFAst 400 f/3.8 Optical Tube Assembly - Full Carbon

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

    ...
    Learn More
    Model#: RIFA400FC
    $30,900.00

  16. Officina Stellare RiFAst 500 f/3.8 Optical Tube Assembly

    Officina Stellare - RiFAst 500 f/3.8 Optical Tube Assembly

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

    ...
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    Model#: RIFA500
    $46,500.00

  17. Officina Stellare Pro RC 800 f/8 Ritchey Chrétien Astrograph

    Officina Stellare - Pro RC 800 f/8 Ritchey Chrétien Astrograph

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate to Pyrex tot Sitall and other low expansion ceramic glass.

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    Model#: PRC800
    $178,875.00

  18. Officina Stellare Pro RC 700 f/8 Ritchey Chrétien Astrograph

    Officina Stellare - Pro RC 700 f/8 Ritchey Chrétien Astrograph

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate to Pyrex tot Sitall and other low expansion ceramic glass.

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    Model#: PRC700
    $117,000.00

  19. Officina Stellare Pro RC 600 f/8 Ritchey Chrétien Astrograph

    Officina Stellare - Pro RC 600 f/8 Ritchey Chrétien Astrograph

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate to Pyrex tot Sitall and other low expansion ceramic glass.

    ...
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    Model#: PRC600
    $79,500.00

  20. Officina Stellare - Pro RC 500 f/8 Ritchey Chrétien Astrograph

    Officina Stellare - Pro RC 500 f/8 Ritchey Chrétien Astrograph

    The Officina Stellare Pro RC Series telescopes are made of some of the best quality optics including but not limited to, homogenous blanks of certified origin chosen between borosilicate to Pyrex tot Sitall and other low expansion ceramic glass.

    ...
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    Model#: PRC500
    $57,510.00

Items 41 to 60 of 176 total

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