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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 - ED80 Classic White f/6 Air Spaced Triplet with Hoya FCD100 Optics with 2.5" HEX Focuser

    Explore Scientific - ED80 Classic White f/6 Air Spaced Triplet with Hoya FCD100 Optics with 2.5" HEX Focuser

    The Explore Scientific 80mm FCD100 refractor telescope is a premium choice for a travel telescope. Featuring Hoya FCD100 optical glass, each optical surface is EMD coated for optimal light transmission, brilliant contrast and true color. Weighs just 7.5 pounds and is only 18.5 inches long with the dew shield attached. Includes a 2.5" HEX focuser capable of carrying up to 10 pounds.

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    (48 States)
    Model#: FCD100-8006-01

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    $999.99

  2. Celestron - C9.25-A XLT (CG-5) 9.25" Optical Tube Assembly

    Celestron - C9.25-A XLT (CG-5) 9.25" 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

    Available

    $1,195.95

  3. Celestron - C 9.25" XLT OTA w/  CGE Dovetail

    Celestron - C 9.25" XLT OTA w/ CGE Dovetail

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

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    Model#: CEL-91027-XLT

    Available

    $1,195.95

  4. 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#: ORI-09969

    Available

    $1,199.99

  5. 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.

    Explore Scientific Instruction Booklet for Triplet Refractors

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    Model#: EDT-0806-CF

    Available

    $999.99

  6. Opticstar - "Optimum One" Series - ED80S Gold 80mm ED Fluorite Doublet Refractor with SL-131C Colour Planetary Camera

    Opticstar - "Optimum One" Series - ED80S Gold 80mm ED Fluorite Doublet Refractor with SL-131C 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.

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    Model#: ED80S + SL-131C

    Available

    Regular Price: $998.00

    Special Price: $948.10

  7. 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.

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    Model#: ED80S + PL-131M

    Available

    Regular Price: $1,148.00

    Special Price: $1,090.60

  8. Opticstar Optimum One ED80S Gold OTA with PX-35C Planetary Camera - Color

    Opticstar - "Optimum One" Series - ED80S Gold + PX-35C 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.

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    Model#: ED80S + PX-35C

    Available

    Regular Price: $1,098.00

    Special Price: $1,043.10

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

    Explore Scientific - ED102mm f/7 Classic White "Essential Series" Air-Spaced Triplet Refractor

    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.

    Explore Scientific Instruction Booklet for Triplet Refractors

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    (48 States)
    Model#: ED10207-01

    In Stock

    $999.99

  10. Meade 10" LX80 Schmidt-Cassegrain Optical Tube Assembly (OTA) w/UHTC

    Meade - 10" LX80 Schmidt-Cassegrain Optical Tube Assembly (OTA) w/UHTC

    The Meade 10" SC Schmidt-Cassegrain includes (254mm) f/10 optical tube with industry leading Ultra-High Transmission Coatings (UHTC) achieving 15% better light transmission than standard coatings

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    (48 States)
    Model#: MEA-1010-08-00

    Available

    $1,199.00

  11. Sky-Watcher USA 12" Quattro Imaging Newtonian Reflector Optical Tube Assembly

    Sky-Watcher USA - 12" Quattro Imaging Newtonian Reflector Optical Tube Assembly

    The Sky-Watcher Quattro Imaging Newtonian telescope with dual speed focuser includes an outstanding mirror-set and a 2" dual-speed 10:1 ratio focuser for precision focusing

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    (48 States)
    Model#: S11230

    Available

    $1,199.00

  12. Borg 71FL Series 80 Set Black (Camera NOT Included)

    Borg - 71FL Series 80 Set Black

    2572 - 71FL Fluorite Objective Assembly (black)

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    (48 States)
    Model#: 6170

    Available

    $1,095.00

  13. 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

    Available

    $995.00

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

    Hutech - 67FL Telephoto Set (black)

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    Model#: 6268

    Available

    $1,050.00

  15. PrimaLuceLab AIRY ED72 Doublet Apochromatic Refractor

    PrimaLuce Lab - 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

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    (48 States)
    Model#: AIRYED72

    In Stock

    $910.00

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