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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 - ED127 APO Carbon Fiber Triplet Refractor Telescope w/ Flattener

    Explore Scientific - ED127 APO Carbon Fiber Triplet Refractor Telescope w/ Flattener

    Special Buy! Get a 127mm APO Carbon Fiber Triplet Refractor with a 2" Field Flattener for just $1999! A savings of $150 off standard retail! This is NEW product but discontinued product. Full manufacturer warranty included. Quantity limited. 

    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-127075CF-FF2

    Regular Price: $2,148.99

    Special Price: $1,999.99

  2. Stellarvue SV80ST 80mm f/6 APO Triplet Refractor

    Stellarvue - SV80ST 80mm f/6 APO Triplet Refractor

    Stellarvue's SV80ST 80mm triplet refractor features apochromatic optics for crisp, beautiful views. F/6 focal ratio offer short exposure times making this 80mm refractor an imager's dream. 2.5" Stellarvue rack and pinion focuser with 1.25" reducing adapter. Add a Stellarvue 2" dielectric diagonal at a reduced price! ... Learn More
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    Model#: SV080ST-25SV
    $1,295.00

  3. Stellarvue SV70T 70mm f/6 APO Triplet Refractor

    Stellarvue - SV70T 70mm f/6 APO Triplet Refractor Telescope

    The Stellarvue 70mm f/6 APO Refractor is a triplet telescope with premium FPL-53 optics with beautiful high contrast and chroma free images. Features a dual speed Stellarvue focuser with 2" and 1.25" compression ring adapters, dual tube rings, and an airline case. Add an optional 2" dielectric diagonal for a reduced price! ... Learn More
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    (48 States)
    Model#: SV070T-25SV
    $799.00

  4. Stellarvue Access 80mm f/7 Super ED APO Refractor

    Stellarvue - Access 80mm f/7 Super ED APO Refractor

    The Stellarvue Super 80 is an 80mm f/7 refractor with FPL53 and Lanthanum optics. Features a Stellarvue 2.5" rack and pinion precision focuser. Add an optional 2" dielectric diagonal at a reduced price! ... Learn More
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    Model#: SV080A-25SV
    $699.00

  5. AG Optical 10" Dall Kirkham Astrograph Telescope

    AG Optical - 10" Dall Kirkham Astrograph Telescope

    AG Optical Systems' Imaging Dall Kirkham (iDK) astrographs are high resolution, premium quality instruments with outstanding on and off-axis performance across a huge 60mm field of view.

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    (48 States)
    Model#: 10IDK
    $11,495.00

  6. PrimaLuceLab AIRY 150mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 150mm Triplet Apochromatic Refractor

    Call it "The Boss"! The PrimaLuceLab's  larger diameter apochromatic refractor optical tube comes with an extraordinary lens, air spaced apochromatic triplet, with 150mm diameter, an excellent value for an apochromatic refractor! Thanks to FPL-53 lens, AIRY APO150T offers a perfect chromatic correction and great performances for all the applications, both visual and photographic.

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    Model#: APO150T
    $9,299.00

  7.  PrimaLuceLab AIRY 130mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 130mm Triplet Apochromatic Refractor

    The AIRY APO130T is an apochromatic refractor featuring large diameter (making it good for deep sky and high magnification planetary astro-imaging as well as visual use), extraordinary optical quality (all credit goes to the FPL-53 air spaced lens) and a strong mechanical development. All together with by fantastic PLUS rings and OnAxisLock locking system.

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    Model#: APO130T
    $4,299.00

  8. PrimaLuceLab AIRY 120mm Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY 120mm Doublet Apochromatic Refractor

    The PrimaLuce Lab APO100 100mm doublet refractor offers Individuals searching for maximum quality in an apochromatic refractor at a reasonable price, an answer. Don't compromise!: large diameter optics, excellent chromatic aberration correction, high-end mechanics, and a remarkable focuser can be yours.

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    Model#: AIRYAPO120
    $2,999.95

  9. CFF Telescopes - 105mm f/6 Oil Spaced Triplet Refractor

    CFF Telescopes - 105mm f/6 Oil Spaced Triplet Refractor

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    Model#: CFF105mm-f6
    $3,999.95

  10. Borg 90FL Optical Tube Assembly (Black) - camera is NOT Included

    Borg - 90FL Optical Tube Assembly (Black)

    This 90 Flourite from Borg package comes with seven components.

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    Model#: 6291
    $1,965.00

  11. Borg - 300mm/F4.5 Fluorite Telephoto Lens Set (White) - *Picture shows camera. This product does NOT include the camera, it only includes the optical tube assembly components.

    Borg - 300mm/F4.5 Fluorite Telephoto Lens Set (White)

    300mm/F4.5 Fluorite Telephoto Lens Set (white) includes 2567, 7861, 7603, 2 x 7602, and 7000

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    (48 States)
    Model#: 6267
    $995.00

  12. Officina Stellare RiLA 800 f/5 Ceramic Glass Full-Carbon Optical Tube
  13. Officina Stellare RiLA 800 f/5 Standard Glass Aluminum-Carbon Optical Tube

    Officina Stellare - RiLA 800 f/5 Standard Glass Aluminum-Carbon Optical Tube

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 800 has a f/5 focal ratio.

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    Model#: RILA800SGA
    $127,436.28

  14. Officina Stellare RiLA 700 f/5 Ceramic Glass Full-Carbon Optical Tube
  15. Officina Stellare RiLA 700 f/5 Standard Glass Aluminum-Carbon Optical Tube

    Officina Stellare - RiLA 700 f/5 Standard Glass Aluminum-Carbon Optical Tube

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 700 has a f/5.2 focal ratio.

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    Model#: RILA700SGA
    $72,198.18

  16. Officina Stellare RiLA 600 f/5 Ceramic Glass Full-Carbon Optical Tube
  17. Officina Stellare RiLA 600 f/5 Standard Glass Aluminum-Carbon Optical Tube

    Officina Stellare - RiLA 600 f/5 Standard Glass Aluminum-Carbon Optical Tube

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 600 has a f/5 focal ratio.

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    Model#: RILA600SGA
    $54,901.33

  18. Officina Stellare - RiLA 500 f/5 Ceramic Glass Full-Carbon Optical Tube
  19. Officina Stellare RiLA 500 f/5 Standard Glass Aluminum-Carbon Optical Tube

    Officina Stellare - RiLA 500 f/5 Standard Glass Aluminum-Carbon Optical Tube

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 500 has a f/5 focal ratio.

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    Model#: RILA500SGA
    $36,367.35

  20. Officina Stellare RiLA 400 f/5.2 Ceramic Glass Full-Carbon Optical Tube

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