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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. TeleVue - NP-127is Imaging System

    TeleVue - NP-127is Imaging System

    CCD cameras have challenged telescope optics beyond anything ever placed at the focal plane. I knew our APO objectives were up to the challenge, and with the proper tweaks would be extraordinary tools for the imager

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    Model#: NPI-5053
    $6,985.00

  2. TeleVue 85mm f/7 Refractor Kit Brass

    TeleVue - 85mm f/7 Refractor Kit - Brass

    Televue TV-85 (Complete) APO Refractor - Brass?  The Televue TV-85 is a superb travel scope, measuring only 21.5" (546mm) in length and weighing 9.6 lbs.?  23.6" (600mm) focal length combined with 3

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    Model#: BXC-3370

    Regular Price: $3,295.00

    Special Price: $2,395.00

  3. Mewlon 250 OTA

    Takahashi - Mewlon 250 Dall-Kirkham OTA - (BRC-250 Double Ring Tube Holder)

    The Mewlon combines refractor-like performance in a larger folded optic reflector design.The 250 optical tube assembly has 9.8" of aperture and a focal ratio of 12.

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    Model#: TLK2501
    $7,895.00

  4. Takahashi Mewlon 210 Dall-Kirkham OTA

    Takahashi - Mewlon 210 Dall-Kirkham Optical Tube Assembly

    Dall-Kirkham Telescope combines refractor-like performance in a larger folded optic reflector design. The Takahashi Mewlon 210 at prime focus provides a focal length of 2415mm, focal ratio of f/11.5 and image circle of 18mm

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    Model#: TLK2101

    Regular Price: $4,238.00

    Special Price: $3,550.00

  5.  Takahashi - TOA-150B Refractor Optical Tube Assembly - Heavy-Duty 4" Focuser

    Takahashi - TOA-150B Refractor Optical Tube Assembly - Heavy-Duty 4" Focuser

    The TOA-150 is the second Takahashi Ortho Apochromat to be developed by Takahashi. It features a newly designed triplet objective. This new design like its smaller companion the TOA-130 is absolutely color free

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    Model#: TOK1501
    $11,400.00

  6. 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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    (48 States)
    Model#: TFK6004
    $989.95

  7. Takahashi Epsilon 180ED f/2.8 Hyperbolic Flat-Field Astrograph Optical Tube Assembly

    Takahashi - Epsilon 180ED f/2.8 Hyperbolic Flat-Field Astrograph OTA

    The Takahashi Epsilon-180ED (D=180mm, F/2.8), based on catadioptric telescope design (means association of lenses and mirrors) offers a fundamental innovation compared with Newton reflector or Schmidt astrograph.

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    Model#: TEK0180
    $5,400.00

  8. Takahashi TSA-102S 102mm Triplet Super APO Refractor Optical Tube Assembly

    Takahashi - TSA-102S 102mm Triplet Super APO Refractor Optical Tube Assembly

    The TSA-10S2 is the first in the new TSA line of Takahashi triplet apochromats. The color free images produced will delight the lunar, planetary and deep sky observer with very high contract images with pin point stars.

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    Model#: TSA0102
    $3,350.00

  9. Sky-Watcher USA ProED 120mm Doublet APO Refractor

    Sky-Watcher USA - ProED 120mm Doublet APO Refractor

    Sky-Watcher high-performance ED-APO refractors offer premium optical performance for the discriminating amateur astronomer.

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    (48 States)
    Model#: S11130
    Sky-Watcher USA Sizzling Summer Savings ends July 31, 2015!

    Regular Price: $1,549.00

    Special Price: $1,399.00

  10. Sky-Watcher USA ProED 100mm Doublet APO Refractor

    Sky-Watcher USA - ProED 100mm Doublet APO Refractor

    Sky-Watcher is a leader in the design and manufacturer of ED-APO systems.  Sky-Watcher offers one of the most extensive lines of ED-APOCHROMATIC refractors in the world.

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    (48 States)
    Model#: S11120
    Sky-Watcher USA Sizzling Summer Savings ends July 31, 2015!

    Regular Price: $749.00

    Special Price: $649.00

  11. RC24

    Optical Guidance Systems - Ritchey-Chretien 24 " f/8 - Optical Tube Assembly

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    Model#: RC24
    $83,900.00

  12. RC20

    Optical Guidance Systems - Ritchey-Chretien 20 " f/8.1 - Optical Tube Assembly

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    Model#: RC20
    $58,900.00

  13. Celestron C6-A-XLT (CG-5) Optical Tube Assembly

    Celestron - C6-A-XLT (CG-5) 6" Optical Tube Assembly

    6" Schmidt-Cassegrain Optical Tube Assembly, Aluminum Optical Tube, Celestron's premium StarBright XLT coatings

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    (48 States)
    Model#: 91010-XLT
    $428.95

  14. Celestron - C5 5" Spotting Scope

    Celestron - C5 5" Spotting Scope

    Celestron's C5 Spotting Scope is a 5" (127mm) aperture, 1250 mm f/10 Schmidt-Cassegrain optical system. Its optical excellence is the reason it was chosen by NASA for many space shuttle missions.

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    (48 States)
    Model#: 52291

    Regular Price: $549.95

    Special Price: $538.95

  15. Celestron EdgeHD 800 Optical Tube Assembly

    Celestron - EdgeHD 800 8" Optical Tube Assembly (OTA)

    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
    Celestron Summer Imaging Promo ends August 31, 2015!

    Regular Price: $1,299.00

    Special Price: $1,169.00

  16. Celestron EdgeHD 1400 Optical Tube Assembly

    Celestron - EdgeHD 1400 14" 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#: 91060-XLT
    Celestron Summer Imaging Promo ends August 31, 2015!

    Regular Price: $5,799.00

    Special Price: $5,219.00

  17. Celestron - EdgeHD 1100 11"  Optical Tube Assembly  91050-XLT

    Celestron - EdgeHD 1100 11" Optical Tube Assembly 91050-XLT

    EdgeHD optical system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with a set of field flattening lenses integrated into the baffle..... ... Learn More
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    Model#: 91050-XLT
    Celestron Summer Imaging Promo ends August 31, 2015!

    Regular Price: $3,399.00

    Special Price: $3,059.00

  18. Celestron EdgeHD 925 Optical Tube Assembly

    Celestron - EdgeHD 925 9.25" Optical Tube Assembly (OTA)

    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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    (48 States)
    Model#: 91040-XLT
    Celestron Summer Imaging Promo ends August 31, 2015!

    Regular Price: $2,299.00

    Special Price: $2,069.00

  19. Celestron C14-AF XLT (CGE) Optical Tube Assembly

    Celestron - C14-A XLT 14" Optical Tube Assembly

    The 14” Schmidt-Cassegrain Celestron C14-A XLT is the upper-end OTA of the Schmidt-Cassegrain series. The StarBright XLT coatings help improve light transmissions to ensure the highest quality images are delivered through the

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    (48 States)
    Model#: 91038-XLT
    $4,999.00

  20. Celestron C11-A XLT (CGE) Optical Tube Assembly

    Celestron - C11-A XLT (CGE) 11" Optical Tube Assembly (OTA)

    Celestron C-11A OTA with Starbright XLT.

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    (48 States)
    Model#: 91036-XLT
    $1,695.00

Items 121 to 140 of 209 total

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