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The optical tube is really the heart of your night time exploration.  Sizes range from 50mm to 20" in diameter as well as f/ratios from f/2.2 to f/15.  The optical designs range from simple doublet refractors to complex cassegrains with built-in field flatteners.  There is literally something for everyone here, you just have to decide what path you want to walk down.  We are always here to help with any questions you have.

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    Astro-Tech AT115EDT f/7 ED Triplet Refractor OTA

    Astro-Tech
    In Stock

    The Astro-Tech AT115EDT 4.53" f/7 ED triplet apochromatic refractor offers more performance and features than similarly-priced smaller aperture com...

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    $1,399.00
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    $1,899.00

    Astro-Tech AT130 EDT f/7 ED Triplet OTA

    Astro-Tech
    In Stock

    Some observers feel that the Astro-Tech AT130EDT 5.12" f/7 ED triplet apochromatic refractor compares favorably in performance to scopes nearly fou...

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    $1,899.00 - $1,899.00
    $1,899.00
    $1,899.00 - $1,899.00
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  • 8" EdgeHD optical tube, CGE/Losmandy dovertail
    $1,599.00 - $1,599.00
    $1,599.00
    $1,599.00 - $1,599.00
    $1,599.00

    Celestron 8" EdgeHD Optical Tube, CGE/Losmandy Dovetail

    Celestron
    In Stock

    The EdgeHD high definition flat field optics of this Celestron 8" EdgeHD optical tube make true astrographic-quality 8" optics truly affordable. Th...

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    $1,599.00 - $1,599.00
    $1,599.00
    $1,599.00 - $1,599.00
    $1,599.00
  • Astro-Tech 6" f/9 Ritchey-Chrétien astrograph
    Sold out
    $479.95 - $479.95
    $479.95
    $479.95 - $479.95
    $479.95

    Astro-Tech 6" f/9 Ritchey-Chrétien Astrograph

    Astro-Tech
    Sold Out

    The exceptional value 6" Astro-Tech Ritchey-Chrétien astrograph is once again available for the serious deep space astrophotographer on a budget . ...

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    $479.95 - $479.95
    $479.95
    $479.95 - $479.95
    $479.95
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  • $2,999.00 - $2,999.00
    $2,999.00
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    $2,999.00

    Celestron 9.25" EdgeHD Optical Tube, CGE/Losmandy Dovetail

    Celestron
    More on the way

    The EdgeHD high definition flat field optics of this Celestron 9.25" EdgeHD optical tube give you true astrographic-quality 9.25" optics with a def...

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    $2,999.00 - $2,999.00
    $2,999.00
    $2,999.00 - $2,999.00
    $2,999.00
  • 11" EdgeHD optical tube, CGE/Losmandy dovetail
    $4,399.00 - $4,399.00
    $4,399.00
    $4,399.00 - $4,399.00
    $4,399.00

    Celestron 11" EdgeHD Optical Tube, CGE/Losmandy Dovetail

    Celestron
    More on the way

    The EdgeHD high definition flat field optics of this Celestron 11" EdgeHD optical tube give you a true astrographic-quality big aperture 11" optica...

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    $4,399.00 - $4,399.00
    $4,399.00
    $4,399.00 - $4,399.00
    $4,399.00
  • $1,799.00 - $1,799.00
    $1,799.00
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    $1,799.00

    Celestron 9.25" SCT Optical Tube, CGE/Losmandy Dovetail

    Celestron
    In Stock

    This 9.25" aperture optical tube gathers 33% more light than an 8" scope, providing brighter images of faint deep space objects. Its light-gatherin...

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    $1,799.00 - $1,799.00
    $1,799.00
    $1,799.00 - $1,799.00
    $1,799.00
  • Astro-Tech AT90EDX side view
    Astro-Tech AT90EDX 3 quarter view
    $1,595.00 - $1,595.00
    $1,595.00
    $1,595.00 - $1,595.00
    $1,595.00

    Astro-Tech AT90EDX f/6 Triplet APO Refractor OTA

    Astro-Tech
    In Stock

    This Astro-Tech AT90EDX refractor has: 90mm f/6 apochromatic triplet optics using an FCD-100 ED element guaranteed .95 strehl ratio or higher opti...

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    $1,595.00 - $1,595.00
    $1,595.00
    $1,595.00 - $1,595.00
    $1,595.00
  • $2,079.00 - $2,079.00
    $2,079.00
    $2,079.00 - $2,079.00
    $2,079.00

    Celestron 8” Rowe-Ackermann Schmidt Astrograph (RASA 8)

    Celestron
    More on the way

    Flat field free of optical aberrations like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor. Unlike the ...

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    $2,079.00 - $2,079.00
    $2,079.00
    $2,079.00 - $2,079.00
    $2,079.00
  • Astro-Tech 8" f/8 Ritchey-Chrétien astrograph, steel tube
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    $1,199.00 - $1,199.00
    $1,199.00
    $1,199.00 - $1,199.00
    $1,199.00

    Astro-Tech 8" f/8 Ritchey-Chrétien Astrograph, Steel Tube

    Astro-Tech
    Sold Out

    The steel tube Astro-Tech AT8RC makes premium 8" Ritchey-Chrétien optics for serious deep space imaging available at the lowest price ever. Sky &am...

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    $1,199.00 - $1,199.00
    $1,199.00
    $1,199.00 - $1,199.00
    $1,199.00
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  • 8" SCT optical tube, CGE/Losmandy dovetail
    $1,249.00 - $1,249.00
    $1,249.00
    $1,249.00 - $1,249.00
    $1,249.00

    Celestron 8" SCT Optical Tube, CGE/Losmandy Dovetail

    Celestron
    More on the way

    The Celestron C8 was the first Schmidt-Cassegrain telescope available to amateur astronomers. This 8" f/10 optical tube is the direct, but much imp...

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    $1,249.00 - $1,249.00
    $1,249.00
    $1,249.00 - $1,249.00
    $1,249.00
  • $7,499.00 - $7,499.00
    $7,499.00
    $7,499.00 - $7,499.00
    $7,499.00

    Celestron 14" EdgeHD Optical Tube, CGE/Losmandy Dovetail

    Celestron
    In Stock

    The Fastar-compatible EdgeHD high definition flat field optics of this big, big Celestron 14" EdgeHD optical tube give you true astrographic-qualit...

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    $7,499.00 - $7,499.00
    $7,499.00
    $7,499.00 - $7,499.00
    $7,499.00
  • $2,999.00 - $2,999.00
    $2,999.00
    $2,999.00 - $2,999.00
    $2,999.00

    Celestron 11" SCT Optical Tube, CGE/Losmandy Dovetail

    Celestron
    More on the way

    This 24" long aluminum Celestron 11" Schmidt Cassegrain optical tube weighs only 27.5 lbs., making it easy to transport. It has an 11" aperture, a ...

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    $2,999.00 - $2,999.00
    $2,999.00
    $2,999.00 - $2,999.00
    $2,999.00
  • 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) optical tube
    $3,599.00 - $3,599.00
    $3,599.00
    $3,599.00 - $3,599.00
    $3,599.00

    Celestron 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) Optical Tube

    Celestron
    In Stock

    The 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) - the next advance in deep space imaging - is available now for the serious astrophotographe...

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    $3,599.00 - $3,599.00
    $3,599.00
    $3,599.00 - $3,599.00
    $3,599.00
  • $2,499.00 - $2,499.00
    $2,499.00
    $2,499.00 - $2,499.00
    $2,499.00

    Celestron 8” Rowe-Ackermann Schmidt Astrograph (RASA 8) Imaging Kit

    Celestron
    In Stock

      Flat field free of optical aberrations like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor. Unlike th...

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    $2,499.00 - $2,499.00
    $2,499.00
    $2,499.00 - $2,499.00
    $2,499.00
  • $1,600.00 - $1,600.00
    $1,600.00
    $1,600.00 - $1,600.00
    $1,600.00

    Celestron 7" Maksutov Cassegrain OTA

    Celestron
    In Stock

    The 7" Maksutov Cassegrain is a fantastic instrument just begging to get out under the stars and bring its high contrast optics to your eye. The 7"...

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    $1,600.00 - $1,600.00
    $1,600.00
    $1,600.00 - $1,600.00
    $1,600.00
  • 12" f/4 carbon fiber truss-tube imaging Newtonian
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    $2,195.00 - $2,195.00
    $2,195.00
    $2,195.00 - $2,195.00
    $2,195.00

    Astro-Tech 12" f/4 Carbon Fiber Truss-Tube Imaging Newtonian

    Astro-Tech
    Sold Out

    If you are a serious deep space astrophotographers with a big mount, this Sky & Telescope 2016 Hot Product 12" Astro-Tech AT12INT carbon fiber ...

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    $2,195.00 - $2,195.00
    $2,195.00
    $2,195.00 - $2,195.00
    $2,195.00
    Sold out
  • Astro-Tech 14" f/8 truss tube Ritchey-Chrétien optical tube
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    $6,049.00 - $6,049.00
    $6,049.00
    $6,049.00 - $6,049.00
    $6,049.00

    Astro-Tech 14" f/8 Truss Tube Ritchey-Chrétien Optical Tube

    Astro-Tech
    Sold Out

    This new version of the Hot Product for 2015 Astro-Tech AT14RCT carbon fiber truss Ritchey-Chrétien makes high quality DSLR and CCD imaging afforda...

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    $6,049.00 - $6,049.00
    $6,049.00
    $6,049.00 - $6,049.00
    $6,049.00
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  • Astro-Tech 12" f/8 truss tube Ritchey-Chrétien optical tube
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    $4,495.00 - $4,495.00
    $4,495.00
    $4,495.00 - $4,495.00
    $4,495.00

    Astro-Tech 12" f/8 Truss Tube Ritchey-Chrétien Optical Tube

    Astro-Tech
    Sold Out

    This newest Version A of the Astro-Tech AT12RCT carbon fiber Serrurier truss Ritchey-Chrétien Hot Product for 2015 makes high quality large-apertur...

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    $4,495.00 - $4,495.00
    $4,495.00
    $4,495.00 - $4,495.00
    $4,495.00
    Sold out
  • Astro-Tech 16" f/8 truss tube Ritchey-Chrétien optical tube
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    $7,295.00 - $7,295.00
    $7,295.00
    $7,295.00 - $7,295.00
    $7,295.00

    Astro-Tech 16" f/8 Truss Tube Ritchey-Chrétien Optical Tube

    Astro-Tech
    Sold Out

    This newest version of the Astro-Tech AT16RCT carbon fiber Serrurier truss 16" f/8 Ritchey-Chrétien Hot Product for 2015 makes high quality large-a...

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    $7,295.00 - $7,295.00
    $7,295.00
    $7,295.00 - $7,295.00
    $7,295.00
    Sold out
  • Astro-Tech 10" f/8 Ritchey-Chrétien carbon fiber optical tube
    $3,495.00 - $3,495.00
    $3,495.00
    $3,495.00 - $3,495.00
    $3,495.00

    Astro-Tech 10" f/8 Ritchey-Chrétien Carbon Fiber Optical Tube

    Astro-Tech
    More on the way

    After many customer requests, we are proud to now offer the Astro-Tech AT10RC Ritchey-Chrétien astrograph, a Sky and Telescope Hot Product for 2010...

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    $3,495.00 - $3,495.00
    $3,495.00
    $3,495.00 - $3,495.00
    $3,495.00
  • Astro-Tech 10" f/8 Ritchey-Chrétien optical tube
    $2,495.00 - $2,495.00
    $2,495.00
    $2,495.00 - $2,495.00
    $2,495.00

    Astro-Tech 10" f/8 Ritchey-Chrétien Optical Tube

    Astro-Tech
    More on the way

    The 10" Astro-Tech AT10RC Ritchey-Chrétien astrograph is a Sky & Telescope Hot Product for 2010 and an Astronomy Star Product for 2010 award wi...

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    $2,495.00 - $2,495.00
    $2,495.00
    $2,495.00 - $2,495.00
    $2,495.00
  • $5,999.00 - $5,999.00
    $5,999.00
    $5,999.00 - $5,999.00
    $5,999.00

    Celestron 14" SCT Fastar-Compatible Optical Tube, CGE/Losmandy Dovetail

    Celestron
    More on the way

    There are state-of-the-art Starbright XLT multicoatings on the hand-figured 14" aperture SCT optics of this impressive optical tube, plus a Fastar-...

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    $5,999.00 - $5,999.00
    $5,999.00
    $5,999.00 - $5,999.00
    $5,999.00

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