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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. Camera NOT included!!!

    Borg - 71FL Fluorite Optical Tube - Series 80 Set

    Series 80 set for the Borg 71FL Fluorite Optical Tube.

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    (48 States)
    Model#: 6171
    $1,150.00

  2. Lunt Engineering - 152mm f/7.9 ED APO Refractor

    Lunt Engineering - 152mm f/7.9 ED APO Refractor

    A 6" f/7.9 ED APO with the glass combination Chengdu CDGM FK61 and Lanthanum H-LAF53.

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    Model#: LE-152ED
    $2,990.00

  3. Vixen 140mm NA140SSf f/5.7 Neo Achromat Optical Tube Assembly Newer Model

    Vixen - 140mm NA140SSf (f/5.7) Neo Achromat Optical Tube Assembly - Newer Model

    Weighing in at 14.3 lbs this 5.5 inch Vixen telescope is an incredible performer. Deep Sky objects are easily visible and Astro-Imagers looking for a fast instrument with clear aperture will be impressed with the NA140’s performance.

    Now with the 2 Speed focuser,  flip mirror , 7x50 FinderScope and Tube Rings complete

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    Model#: 58681

    Regular Price: $1,999.00

    Special Price: $1,499.00

  4. Vixen Ultra Fast Astrograph VSD 100 f/3.8 Optical Tube Assembly

    Vixen - Ultra Fast Astrograph VSD 100 f/3.8 Optical Tube Assembly

    The innovative wide and flat imaging field, that covers 645 medium format cameras, and e 5 elements in 5 group lens design completely eliminates a violet tint in chromatic aberration (blue halo).

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    (48 States)
    Model#: VSD
    $6,299.00

  5. Takahashi - FC-100DF Steinheil Fluorite Doublet Apochromat Optical Tube Assembly - Imaging Model

    Takahashi - FC-100DF Steinheil Fluorite Doublet Apochromat Optical Tube Assembly - Imaging Model

    Takahshi has just introduced an updated version of the original FC-100 now called the FC-100D. It has been designed for the digital age.

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    Model#: TFK10110
    $2,595.00

  6. PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 20"

    PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 20"

    This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.

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    Model#: IR DK20
    $35,000.00

  7. PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 17"

    PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 17"

    This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.

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    Model#: IR DK17
    $24,000.00

  8. PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 12.5"

    PlaneWave - Infrared Dall-Kirkham Optical Tube Assembly 12.5"

    This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.

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    Model#: IR DK12.5
    $13,800.00

  9. PlaneWave 14" CDK Corrected Dall-Kirkham Carbon Fiber Telescope

    PlaneWave - 14" CDK Corrected Dall-Kirkham Carbon Fiber Telescope

    The PlaneWave Instruments CDK14 is a 14 inch (0.36 m) f/7.2 Corrected Dall-Kirkham Astrograph telescope. The CDK14 covers a 70 mm field of view without any field curvature, off-axis coma, or astigmatism.

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    Model#: 140101
    $15,000.00

  10. PlaneWave 0.7m CDK Corrected Dall-Kirkham Telescope

    PlaneWave - 0.7m CDK Corrected Dall-Kirkham Telescope

    PlaneWave Instruments now brings a fully automated observatory class telescope to the market in the CDK700, a 0.7 meter, Alt-Az telescope system.

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    Model#: 700101
    $200,000.00

  11. AG Optical 16" Imaging Harmer Wynne Astrograph

    AG Optical - 16" Imaging Harmer Wynne Astrograph

    Imaging Harmer Wynne (iHW) astrographs are high resolution, fast focal ratio instruments with excellent on and off axis performance.

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    (48 States)
    Model#: iHW16
    $27,595.00

  12. AG Optical 12.5" Imaging Harmer Wynne Astrograph

    AG Optical - 12.5" Imaging Harmer Wynne Astrograph

    Imaging Harmer Wynne (iHW) astrographs are high resolution, fast focal ratio instruments with excellent on and off axis performance.

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    Model#: iHW12.5
    $15,775.00

  13. 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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    (48 States)
    Model#: ED80S + PX-35C

    Regular Price: $1,098.00

    Special Price: $1,043.10

  14. Celestron EdgeHD 800 Optical Tube Assembly

    Celestron - EdgeHD 800 8" Optical Tube Assembly (OTA) - Fully Warranted - OPEN BOX

    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-OPEN

    Regular Price: $1,299.00

    Special Price: $1,259.00

  15. 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

  16. Officina Stellare RiLA 700 f/5 Ceramic Glass Full-Carbon Optical Tube
  17. 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

  18. Officina Stellare RiLA 600 f/5 Ceramic Glass Full-Carbon Optical Tube
  19. 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

  20. Officina Stellare - RiLA 500 f/5 Ceramic Glass Full-Carbon Optical Tube

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