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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 61 to 80 of 178 total

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  1. Vixen - 81mm ED81S (f/7.7) ED Apochromatic Optical Tube Assembly

    Vixen - 81mm ED81S (f/7.7) ED Apochromatic Optical Tube Assembly

    When The ED81S was introduced , it set a new standard for APO Refractors. The combination of better color correction from the new ED glass and brighter images from its fast f/7.

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    Model#: 5864
    30% sale while supplies last!

    Regular Price: $1,499.00

    Special Price: $1,049.30

  2. Opticstar - "Optimum One" Series - ED80S Gold + PL-131M Monochrome Planetary Camera

    Opticstar - "Optimum One" Series - ED80S Gold + PL-131M Monochrome Planetary Camera

    The Opticstar ED80S short-tube refractor is ideal as a portable scope and can be used for observing, imaging or as a guide scope. It uses a high quality 80mm apochromatic doublet that is fully broad-band multicoated to ensure maximum light transmission.

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    Model#: ED80S + PL-131M

    Regular Price: $1,148.00

    Special Price: $1,090.60

  3. Explore Scientific - ED80 Air Spaced Carbon Fiber Triplet Refractor Telescope

    Explore Scientific - ED80 Air Spaced Carbon Fiber Triplet Refractor Telescope

    This 80mm f/6 ED Apochromatic triplet is an air-spaced triplet refractor telescope for observing and photography of celestial objects.

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    Model#: EDT-0806-CF

    Regular Price: $2,556.99

    Special Price: $1,149.99

  4. Camera is NOT Included!!!

    Borg - 71FL Fluorite Optical Tube - Basic Set

    Basic set for the Borg 71FL Fluorite Optical Tube.

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    Model#: 6071
    $1,150.00

  5. Camera NOT included!!!

    Borg - 71FL Fluorite Optical Tube - Series 80 Set

    Series 80 set for the Borg 71FL Fluorite Optical Tube.

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    Model#: 6171
    $1,150.00

  6. Celestron EdgeHD 800 Optical Tube Assembly

    Celestron - EdgeHD 800 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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    Model#: 91030-XLT
    Capture the Universe Sale

    Regular Price: $1,299.00

    Special Price: $1,165.00

  7. Celestron EdgeHD 8 Optical Tube Assembly (CG5)

    Celestron - EdgeHD 8 Optical Tube Assembly (CG5)

    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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    Model#: 91031-XLT
    Capture the Universe Sale

    Regular Price: $1,299.00

    Special Price: $1,165.00

  8. Tripod is NOT included!!!!

    Borg - 71FL Fluorite Optical Tube - Astro Visual Set

    Astro Visual set for the Borg 71FL Fluorite Optical Tube.

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    Model#: 6272
    $1,175.00

  9. Explore Scientific 80mm f/6 Air-Spaced Triplet ED Apochromatic Refractor w/ Deluxe Case Accessories TwiLight II Heavy-Duty Dual-Head Mount

    DISCONTINUED: Explore Scientific - 80mm f/6 Air-Spaced Triplet ED Apochromatic Refractor w/ Deluxe Case & Accessories & TwiLight II Heavy-Duty Dual-Head Mount

    This is a discontinued item. We recommend the newer version of the ED80 and the Twilight II Heavy Duty Dual Head mount as a replacement.

    The 80mm f/6 ED Apochromatic triplet from Explore Scientific is a great air-spaced triplet refractor telescope for observing as well as for use in photography of celestial objects

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    Model#: TED0806-00-MAZ02-01
  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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    Model#: TFK6004
    $1,190.00

  11. Orion - 8" f/8 Ritchey-Chretien Astrograph Telescope

    Orion - 8" f/8 Ritchey-Chretien Astrograph Telescope

    Orion is proud to introduce this highly regarded telescope design used by advanced astrophotographers worldwide . ... Learn More
    Model#: 08958
    $1,195.00

  12. Camera is NOT Included!!!!!

    Borg - 71FL Fluorite Optical Tube - Telephoto Set

    Telephoto set for the Borg 71FL Fluorite Optical Tube.

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    Model#: 6271
    $1,195.00

  13. Orion - 8 " f/8 Ritchey Cretien Optical Tube Assembly

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

    * Ritchey-Chretien optical design produces superb flat-field, coma-free images that are superior to those achievable with conventional reflector or Schmidt-Cassegrain telescopes * One of the most compact Ritchey-Chretien astrographs available, at ... Learn More
    Model#: 8958
    $1,195.95

  14. Orion - 180mm Maksutov-Cassegrain Telescope Optical Tube

    Orion - 180mm Maksutov-Cassegrain Telescope Optical Tube

    Looking for something to satisfy your appetite for power? Try a big Mak! For the most demanding enthusiast, our Orion 180mm Maksutov-Cassegrain Telescope sets a new standard for superb high-power performance in a remarkably compact design.

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    Model#: 09969
    $1,219.95

  15. Opticstar Optimum One ED80S Gold OTA with PX-75C Planetary Camera - Color

    Opticstar - "Optimum One" Series - ED80S Gold + PX-75C Colour Planetary Camera

    The Opticstar ED80S short-tube refractor is ideal as a portable scope and can be used for observing, imaging or as a guide scope. It uses a high quality 80mm apochromatic doublet that is fully broad-band multicoated to ensure maximum light transmission.

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    (48 States)
    Model#: ED80S + PX-75C

    Regular Price: $1,298.00

    Special Price: $1,233.10

  16. Explore Scientific 102mm f/7 ED Apochromatic Triplet Essential Refractor Telescope

    Explore Scientific - 102mm f/7 ED Apochromatic Triplet Essential Refractor Telescope

    The Explore Scientific 102mm f/7 Air-Spaced Triplet ED APO Telescope made Wired Magazine''s Wish List for cool gifts and is a perfect instrument for demanding wide field observing and astrophotography.

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    Model#: ES-ED10207-01

    Regular Price: $2,778.99

    Special Price: $1,249.99

  17. Explore Scientific - ED127 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    DISCONTINUED: Explore Scientific - ED127 Classic White "Essential Series" Air Spaced Triplet Apochromatic Telescope

    This is a discontinued item. We recommend the newer version of the Explore Scientific ED127 Classic White Air-Spaced Triplet Refractor as a replacement.

    The Explore ED127 Essential Edition telescope comes with a white aluminum tube with black accents.

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    Model#: ES-ED127075-02
  18. Vixen 200mm VC200L OTA

    Vixen - 200mm VC200L (f/9) Catadioptrical Reflector Optical Tube Assembly

    The VC200L is designed for Astro Imaging.   Even at the edge of the 35mm film format (larger CCD chips) stars are sharp ( smaller than 15 micrometers).

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    (48 States)
    Model#: 5870

    Regular Price: $1,899.00

    Special Price: $1,299.00

  19. Meade 8" LX200-ACF (f/10) Advanced Coma-Free OTA (UHTC)

    Meade - 8" LX200-ACF (f/10) Advanced Coma-Free OTA - (UHTC)

    Meade now brings to market a sophisticated Catadioptric optical design favored by research facilities worldwide at a price many enthusiasts can afford.  Most professional applications are this style telescope or a gargantuan apochromatic refractor.

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    (48 States)
    Model#: 0810-60-00
    $1,299.00

  20. Celestron C9.25-A XLT (CG-5) Optical Tube Assembly

    Celestron - C9.25-A XLT (CG-5) Optical Tube Assembly

    Celestron's high quality Schmidt Cassegrain design, available in an Optical Tube Assembly.

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    (48 States)
    Model#: 91025-XLT

    Regular Price: $1,479.00

    Special Price: $1,299.95

Items 61 to 80 of 178 total

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