Order By Phone
STORE FRONT: 5348 Topanga Canyon Blvd, Woodland Hills CA 91364

Welcome!

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 238 total

per page

Set Descending Direction
  1. Stellarvue 102mm APO Triplet Refractor

    Stellarvue - SVR102T 102mm f/7 APO Triplet CF Refractor - 3" Feathertouch Focuser

    The SVR102T is a 102mm APO triplet refractor by Stellarvue, with a f/7 focal ration and premium optics. Includes an interferometric test report and features a carbon fiber body for reduced temperature fluctuation, 3" precision dual speed FeatherTouch focuser, and padded carry case. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SVR102T-3FT
    $2,895.00

  2. PrimaLuceLab AIRY ED90 Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY ED90 Doublet Apochromatic Refractor

    PrimaLuce Lab ED90 is a 90mm refractor telescope featuring apochromatic doublet optics and premium grade mechanics. With a great combination of ample aperture and a compact design, the AIRY 90mm is very portable and serves well as both a visual and imaging telescope. Includes 2" hybrid focuser with 2" on axis lock adapter, retractible dew shield, PLUS system dual scope rings, and a hard carry case. ... Learn More

    FREE SHIPPING
    (48 States)
    Model#: AIRYED90
    $1,345.95

  3. PrimaLuceLab AIRY 80mm Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY APO80 80mm Doublet Apochromatic Refractor

    The PrimaLuce Lab APO80 is an 80mm refractor telescope featuring apochromatic doublet optics and premium grade mechanics. Compact in design with a focal length of just 500mm, the 80mm makes an excellent travel companion for both observing and astro-imaging. Includes 2" hybrid focuser with 2" on axis lock adapter, retractible dew shield, PLUS system dual scope rings, and a hard carry case. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: APO80
    $999.00

  4. PrimaLuceLab AIRY ED72 Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY ED72 72mm Doublet Apochromatic Refractor

    PrimaLuce Lab ED72 is a 72mm refractor telescope featuring apochromatic doublet optics and premium grade mechanics. Small and lightweight, the 72mm makes a perfect travel companion for both observing and astro-imaging. Includes 2" hybrid focuser with 2" on axis lock adapter, retractible dew shield, PLUS system dual scope rings, and a hard carry case. ... Learn More

    FREE SHIPPING
    (48 States)
    Model#: AIRYED72
    $699.95

  5. PrimaLuceLab AIRY 65mm Quadriplet Apochromatic Refractor

    PrimaLuceLab - AIRY 65mm Quadriplet Apochromatic Refractor with Field Flattener

    AIRY APO65F is a little and compact apochromatic refractor tube with 65mm diameter and 420mm focal length making it excellent for taking long exposures due to its quadruplet optics (FPL - 53)

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: APO65F
    $999.95

  6. Explore Scientific 208mm Newtonian f/3.9 with Carbon Fiber Tube

    Explore Scientific - 208mm Newtonian f/3.9 with Carbon Fiber Tube

    Explore Scientific - 208MM NEWTONIAN F/3.9 WITH CARBON FIBER TUBE

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: N208CF
    $799.95

  7. Hutech 77EDII OTA (black)

    Hutech - 77EDII OTA (black)

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 6279
    $895.00

  8. Hutech 67FL Telephoto Set (black) *Camera NOT Included

    Hutech - 67FL Telephoto Set (black)

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 6268
    $1,050.00

  9. Hutech 55FL Telephoto Lens Set

    Hutech - 55FL Telephoto Lens Set

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 6255
    $750.00

  10. Hutech 90FL Black BORG BU-1 Set

    Hutech - 90FL Black BORG BU-1 Set

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 6190
    $2,480.00

  11. Hutech - 89ED OTA (black)

    Hutech - 89ED OTA (black)

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 6187
    $1,450.00

  12. Hutech Black BORG 77ED Optical Tube

    Hutech - Black BORG 77ED Optical Tube

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 6183
    $1,450.00

  13. CFF Telescopes - 132mm f/6.9 Oil Spaced Triplet Refractor

    CFF Telescopes - 132mm f/6.9 Oil Spaced Triplet Refractor

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CFF132mm-f6.9
    $7,499.95

  14. PrimaLuceLab AIRY Black 90T 90mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY Black 90T 90mm Triplet Apochromatic Refractor

    An excellent refractor for those searching for a great quality lens with the best design and parts, all in one item yet compact, lightweight and highly portable.

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: AIRYBLACK90T
    $1,850.99

  15. PrimaLuceLab AIRY ED100 Doublet Apochromatic Refractor

    PrimaLuceLab - AIRY ED100 Doublet Apochromatic Refractor

    The PrimaLuce Lab AIRY ED100 is an exception; a premium optical quality 100mm aperture refractor featuring FPL-51 doublet ED lenses, a 2.7" focuser and an incredible mechanics made with CNC machined aluminum all at an affordable price!

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: AIRYED100
    $1,759.95

  16.  PrimaLuceLab AIRY 104mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 104mm Triplet Apochromatic Refractor

    PrimaLuceLab is glad to present the first OTA of the new T-series which is designed for the customer thriving for excellent optical performances with good mechanical quality with no compromises!

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: AIRYAPO104T
    $3,299.00

  17. Stellarvue 130mm APO Triplet Refractor

    Stellarvue - SVA130T 130mm f/7 APO Triplet Refractor w/ 3" FeatherTouch Focuser

    Stellarvue's 130mm SVA103EDT f/7 Triplet APO refractor features a FeatherTouch 3" dual speed precision focuser, and includes a 2-1.25" adapter, dual hinged rings, an American made hard case. Interferometric test report included for proof of optic specifications. Add a 2" dielectric diagonal at a reduced price! ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SVA130T-3FT
    $3,995.00

  18. Stellarvue 130mm APO Triplet Refractor

    Stellarvue - SVA130T 130mm f/7 APO Triplet Refractor

    Stellarvue's 130mm SVA103EDT f/7 Triplet APO refractor features a Stellarvue rotating 2.5" dual speed focuser, and includes a 2-1.25" adapter, dual hinged rings, an American made hard case. Interferometric test report included for proof of optic specifications. Add a 2" dielectric diagonal at a reduced price! ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SVA130T-25SV
    $3,495.00

  19. Stellarvue 102mm APO Triplet Refractor

    Stellarvue - SVR102T 102mm f/7 APO Triplet Carbon Fiber Refractor

    The SVR102T is a 102mm APO triplet refractor by Stellarvue, with a f/7 focal ration and premium optics. Includes an interferometric test report and features a carbon fiber body for reduced temperature fluctuation, 2.5" rotating Stellarvue focuser, and padded carry case. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SVR102T-25SV
    $2,395.00

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

    Stellarvue - SV80ST 80mm f/6 APO Triplet Refractor - 2.5" Feather Touch Focuser

    Stellarvue's SV80ST 80mm triplet refractor features apochromatic optics for crisp, color perfect views. 2.5" Feathertouch rack and pinion focuser with 1.25" reducing adapter. Add a Stellarvue 2" dielectric diagonal at a reduced price! ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SV080ST-25FT
    $1,695.00

Items 61 to 80 of 238 total

per page

Set Descending Direction