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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. Explore Scientific - ED102 Air Spaced Carbon Fiber Triplet Refractor Telescope *

    Explore Scientific - ED102 Air Spaced Carbon Fiber Triplet Refractor Telescope *

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

    Explore Scientific Instruction Booklet for Triplet Refractors

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    (48 States)
    Model#: EDT-10207-CF

    Regular Price: $1,729.99

    Special Price: $1,384.00

  2. Astro-Tech - White 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astro-Tech - White 72mm f/6 ED Doublet Refractor Optical Tube Assembly

    Astronomy magazine called this scope’s predecessor, the 66mm Astro-Tech AT66ED, “a product everyone should own.”

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    (48 States)
    Model#: AT72WH
    $379.00

  3. 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.

  4. 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

  5. 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

  6. 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

  7. 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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    Model#: 1010-08-00
    $1,199.00

  8. Explore Scientific ED 152 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

    Regular Price: $4,999.99

    Special Price: $3,999.99

  9. 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

  10. Celestron NexStar 6SE Optical Tube Assembly

    Celestron - NexStar 6SE 150mm Optical Tube Assembly

    Portability and serious performance come together in the NexStar 6 SE. The ultra portable 6 SE features a precision optical system with 1500mm focal length (f/10) and offers 44% more light gathering than a 5" telescope.

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    (48 States)
    Model#: 11068-OTA
    $389.95

  11. Vixen ED100Sf 100mm (3.9 inch) ED Apochromatic Refractor Optical Tube Assembly

    Vixen - ED100Sf 100mm (3.9 inch) ED Apochromatic Refractor Optical Tube Assembly

    The Vixen ED100Sf 100mm ED Apochromatic Refractor includes Extra-Low Dispersion glass that reduces aberration to create sharp images.

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    (48 States)
    Model#: 2618
    $699.00

  12. 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!

    ...
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    Model#: RIFA400FC
    $30,900.00

  13. 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

  14. Officina Stellare RiFAst 500 f/3.8 Optical Tube Assembly Full Carbon

    Officina Stellare - RiFAst 500 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#: RIFA500FC
    $57,712.50

  15. 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

  16. 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

  17. 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

  18. 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

  19. Officina Stellare Pro RC 400 f/8 Ritchey Chrétien Astrograph

    Officina Stellare - Pro RC 400 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#: PRC400
    $38,475.00

  20. Officina Stellare Veloce RH 300 F/3 Astrograph

    Officina Stellare - Veloce RH 300 f/3 Astrograph

    The New version of Officina Stellare Veloce RH 300 - Riccardi-Honders Astrograph is a premier, innovative, Officina Stellare exclusive!

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    Model#: VELRH300
    $27,540.00

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