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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. Borg - 71FL Fluorite Optical Tube - Fork Mount Set

    Borg - 71FL Fluorite Optical Tube - Fork Mount Set

    Fork mount set for the Borg 71FL Fluorite Optical Tube.

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    (48 States)
    Model#: 0271
    $1,450.00

  2. Borg - 71FL Fluorite Optical Tube - Fork Mount Set with Tripod

    Borg - 71FL Fluorite Optical Tube - Fork Mount Set with Tripod

    Fork mount set for the Borg 71FL Fluorite Optical Tube with Tripod.

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    (48 States)
    Model#: 0271S
    $1,730.00

  3. Bresser Messier AR-127S/635 Optical Tube Assembly

    Bresser - Messier AR-127S/635 Optical Tube Assembly

    The Bresser Messier AR-127S/635 127mm refractor is excellent for touring the solar system! Planets like Jupiter and Saturn will show cloud bands, moons, and even Saturn's rings with just the use of this telescope. Closer to Earth, the moon's craters and surface geological features will all become visible.

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    Model#: BR-27635

    Regular Price: $869.99

    Special Price: $519.00

  4. Celestron - Rowe-Ackermann Schmidt Astrograph OTA

    Celestron - Rowe-Ackermann Schmidt Astrograph OTA

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    Model#: Rowe-Ackermann Schmidt Astrograph Optical Tube Assembly
    $3,499.00

  5. Bresser Messier AR-102/1000 Optical Tube Assembly

    Bresser - Messier AR-102/1000 Optical Tube Assembly

    The Bresser Messier AR-102/1000 Refractor OTA is capable of showing many details in celestial objects like Saturn's rings, Jupiter's cloud bands as well as craters on the moon.

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    Model#: BR-02100

    Regular Price: $606.99

    Special Price: $369.00

  6. Bresser Messier AR-90/900 Optical Tube with EXOS-1 EQ Mount and Tripod

    Bresser - Messier AR-90/900 Optical Tube with EXOS-1 EQ Mount and Tripod

    With a light gathering power of 200x more than the human eye, the Bresser Messier AR-90/900 is an excellent telescope for beginner astronomers that still want to detailed views delivered. Details in Saturn's rings, storms on Jupiter, moon craters and even the seasons of Mars are all apparent through this telescope.

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    Model#: BR-90900

    Regular Price: $440.99

    Special Price: $299.00

  7. Bresser - Messier AR-80/900 Optical Tube with EQ Sky Mount and Tripod

    Bresser - Messier AR-80/900 Optical Tube with EQ Sky Mount and Tripod

    The Bresser Messsier AR-80/900 is an excellent scope for beginners due to its remarkable light gathering power for better detailed observation.

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    Model#: BR-80900

    Regular Price: $313.99

    Special Price: $209.00

  8. Explore Scientific 210mm f/3.8 White Aluminum Photo Newtonian Reflector

    Explore Scientific - 210mm f/3.8 White Aluminum Tube Newtonian Reflector

    Explore Scientific - 210mm f/3.8 White Aluminum Photo Newtonian Reflector

    Starts shipping approximately late August.

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    Model#: PN21038-HRCC

    Regular Price: $2,000.99

    Special Price: $899.99

  9. Sky-Watcher USA Esprit 150mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 150mm 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#: S11430
    $6,399.00

  10. 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.

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    (48 States)
    Model#: S11420
    $3,199.00

  11. Orion ShortTube 80-T Refractor Telescope

    Orion - ShortTube 80-T Refractor Telescope

    The Orion ShortTube 80-T Optical Tube assembly is an f/5 multi-coated 400mm refractor that provides excellent wide field of views with excellent contrast for viewing planets.

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    Model#: 09946

    Regular Price: $179.99

    Special Price: $149.99

  12. Celestron - 6" Newtonian Reflector Optical Tube Assembly

    Celestron - 6" Newtonian Reflector Optical Tube Assembly

    The Celestron Advanced VX 6" Newtonian Telescope is excellent for basic deep sky observing as well as planetary observing due to its impressive light gathering power of the mirrors and mid fast focal ratio.

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    Model#: 32054-OTA

    Regular Price: $269.00

    Special Price: $179.00

  13. 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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    Model#: VRC-12
    $3,499.99

  14. 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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    Model#: VRC-10
    $2,899.99

  15. 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
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    (48 States)
    Model#: VRC-8-CF
    $1,499.99

  16. MallinCam VRC-8 203mm Hyperbolic Mirror true Ritchey-Chretien Optical Tube Assembly

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

    The tube of the MallinCam VRC-8 sports lightweight, sturdy aluminum construction and is finished in white. Both of the hyperbolic mirrors are engineered from zero-thermal-expansion quartz, and feature dielectric coatings, boasting an impressive 99 per cent reflectivity. ... Learn More
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    (48 States)
    Model#: VRC-8
    $1,079.99

  17. MallinCam VRC-6 152mm Ritchey-Chretien Optical Tube Assembly

    MallinCam - VRC-6 - 152mm Ritchey-Chretien Optical Tube Assembly

    The tube of the MallinCam VRC-6 sports lightweight, sturdy aluminum construction and is finished in white. Both of the hyperbolic mirrors are engineered from zero-thermal-expansion quartz, and feature dielectric coatings, boasting an impressive 93 per cent reflectivity. Each mirror can be separately collimated for exquisite precision and the collimation can be locked. ... Learn More
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    (48 States)
    Model#: VRC-6
    $499.99

  18. MallinCam Micro-EX 960H EXview HAD II CCD Camera VRC-6 Combo

    MallinCam - Micro-EX 960H EXview HAD II CCD Camera - VRC-6 Combo

    MallinCam's new combo includes the lightweight, versatile and compact Micro-EX CCD video camera in conjunction with the 6" MallinCam VRC-6, a full Ritchey-Chretien optical tube scope, which has been optimized for video applications. The combination of these two MallinCam instruments gives enough light-gathering ability to resolve even the most obscure of objects. ... Learn More
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    (48 States)
    Model#: Micro-EX-VRC-6
    $599.00

  19. Celestron NexStar 6SE Optical Tube Assembly

    Celestron - NexStar 6SE 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

  20. 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

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