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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.

Items 101 to 120 of 177 total

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  1. Celestron EdgeHD 925 Optical Tube Assembly

    Celestron - EdgeHD 925 Optical Tube Assembly

    The EdgeHD optical system takes all of the compact power popularized by the SCT and combines it with an improved high definition optical system for wide field, astrograph quality images.

    ...
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    (48 States)
    Model#: 91040-XLT
    Capture the Universe Sale

    Regular Price: $2,299.00

    Special Price: $2,065.00

  2. Celestron C-11CF Optical Tube Assembly

    DISCONTINUED: Celestron - C-11CF Optical Tube Assembly

    This item is no longer available. please see Celestron C11-A XLT (CGE) Optical Tube Assembly

    Now you can have your own a la carte assemblage of your preferred optical tube and mount.

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    (48 States)
    Model#: 91035-XLT
  3.  Borg - 77 ED II f/4.3 Astrograph Set (2178 + 7135 + 7835 + 7704)

    Borg - 77 ED II f/4.3 Astrograph Set (2178 + 7135 + 7835 + 7704)

    • BORG 77EDII OTA
    • 0.65x reducer
    • Total of 6 elements
    • 330mm focal length
    • F4.3
    • 35mm full-frame coverage
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    (48 States)
    Model#: B07743
    $2,175.00

  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 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

  6. Takahashi Sky-90II f/5.6 Fluorite APO Refractor OTA

    Takahashi - Sky-90II 3.5" f/5.6 Fluorite APO Refractor Optical Tube Assembly

    The Takahashi Sky 90 is a refractor telescope that executes optical excellence.

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    (48 States)
    Model#: TSK9001
    $2,400.00

  7. 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

  8. 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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    (48 States)
    Model#: WXC-3370
    $2,495.00

  9. Meade - 10" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Meade - 10" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Building on Meade’s award-winning Advanced Coma-Free (ACF) optics, the 12" OTA employs a fast f/8 optical system with high-contrast baffling that insures crisp, pinpoint imaging to the very edge of the field

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    (48 States)
    Model#: 1008-80-00
    $2,499.00

  10. Sky-Watcher USA Esprit 100mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 100mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

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    (48 States)
    Model#: S11410
    $2,499.00

  11. Explore Scientific - ED127 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific - ED127 Air Spaced Carbon Fiber Triplet Refractor Telescope

    The Explore Scientific 127mm f/7.5 Air-Spaced Triplet ED APO produces a visual experience that is often compared to much larger aperture reflector telescopes.

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    (48 States)
    Model#: EDT-127075-CF
    .

    Regular Price: $5,556.99

    Special Price: $2,499.99

  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. Orion 10" f/8 Ritchey Cretien Optical Tube Assembly

    Orion - 10 " f/8 Ritchey Cretien Optical Tube Assembly

    Go after even the most elusive and faint deep-sky targets with the Orion 10" f/8.0 Ritchey-Chretien Astrograph. Featuring virtually coma-free optics for superb imaging performance, the Orion 10" f/8.0 Ritchey-Chretien Astrograph boasts a plethora of deluxe features

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    Model#: 8961
    $2,694.95

  14. APM 100mm 45° ED-APO Binoculars with Interchangeable Eyepieces

    Lunt Engineering - 100mm 45° ED-APO Binoculars with Interchangeable Eyepieces

    This binocular is made for very high power use up to above 100 power.

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    (48 States)
    Model#: APM100ED-BINO
    $2,950.00

  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#: TEK1310
    $2,995.00

  16. Meade 12" LX200-ACF Optical Tube Assembly

    Meade - 12" LX200-ACF (f/10) Advanced Coma-Free OTA

    With all these innovations and technological features built in, what's not to like about the Meade LX-200 ACF 12 inch Computerized Telescope - except maybe for the fact that you don't yet own one!  

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    (48 States)
    Model#: 1210-60-00
    $2,999.00

  17. Sky-Watcher USA - Quantum 100 ED APO Triplet

    Sky-Watcher USA - Quantum 100 ED APO Triplet

    Sky-Watcher Quantum top of the line ED-APO refractors offer premium optical performance for discriminating amateur astronomers and imagers

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    (48 States)
    Model#: S11160
    $2,999.00

  18. Vixen - 115mm ED115S (f/7.7) ED Apochromatic Optical Tube Assembly

    Vixen - 115mm ED115S (f/7.7) ED Apochromatic Optical Tube Assembly

    The astro-photographer will be especially pleased with the high contrast images through this telescope and the full objective diameter of 4".

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    (48 States)
    Model#: 5866
    $2,999.00

  19. Celestron EdgeHD 1100 Optical Tube Assembly

    Celestron - EdgeHD 1100 Optical Tube Assembly

    The EdgeHD optical system takes all of the compact power popularized by the SCT and combines it with an improved high definition optical system for wide field, astrograph quality images.

    Purchase This Scope and Get  celestron 93781, a 9x50 Right Angled Illuminated Finder a $109.95 Value at no Charge

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    (48 States)
    Model#: 91050-XLT
    Capture the Universe Sale

    Regular Price: $3,399.00

    Special Price: $3,055.00

  20. Sky-Watcher USA Esprit 120mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 120mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: S11420
    $3,199.00

Items 101 to 120 of 177 total

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