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OTA

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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  • 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
  • $1,080.00 - $1,080.00
    $1,080.00
    $1,080.00 - $1,080.00
    $1,080.00

    Sky-Watcher Evostar 80ED 80mm f/7.5 ED Doublet Apochromatic Refractor S11100

    Sky-Watcher
    In Stock

    This 80mm Sky-Watcher Evostar 80ED doublet apochromatic refractor is loaded with performance and features at a very attractive price . . . This Sky...

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    $1,080.00 - $1,080.00
    $1,080.00
    $1,080.00 - $1,080.00
    $1,080.00
  • $1,255.00 - $1,255.00
    $1,255.00
    $1,255.00 - $1,255.00
    $1,255.00

    Sky-Watcher Evostar 100ED 100mm f/9 ED Doublet Apochromatic Refractor S11120

    Sky-Watcher
    In Stock

    This 100mm Sky-Watcher Evostar 100ED doublet apochromatic refractor is a premium scope with high contrast/high resolution performance and premium a...

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    $1,255.00 - $1,255.00
    $1,255.00
    $1,255.00 - $1,255.00
    $1,255.00
  • Astro-Tech 8" f/8 Ritchey-Chrétien astrograph, carbon fiber tube
    Sold out
    $1,395.00 - $1,395.00
    $1,395.00
    $1,395.00 - $1,395.00
    $1,395.00

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

    Astro-Tech
    Sold Out

    The Astro-Tech AT8RC is the first affordable 8" Ritchey-Chrétien with premium features available to the amateur astronomer who is into serious deep...

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    $1,395.00 - $1,395.00
    $1,395.00
    $1,395.00 - $1,395.00
    $1,395.00
    Sold out
  • $839.95 - $839.95
    $839.95
    $839.95 - $839.95
    $839.95

    Celestron 6" SCT Optical Tube, CG5/AVX Dovetail

    Celestron
    More on the way

    This 6" SCT optical tube has advanced Starbright XLT multicoatings for Celestron's brightest images ever. The Celestron C8 was the first Schmidt-Ca...

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    $839.95 - $839.95
    $839.95
    $839.95 - $839.95
    $839.95
  • $899.00 - $899.00
    $899.00
    $899.00 - $899.00
    $899.00

    ZWO FF65 APO Refractor OTA

    ZWO
    More on the way

    The ZWO FF series is a potential fit for your astro-photography needs.   The ZWO FF65 APO is a high-performance 65mm f/6.4 astrograph designed for ...

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    $899.00 - $899.00
    $899.00
    $899.00 - $899.00
    $899.00
  • Sold out
    $3,499.99 - $3,499.99
    $3,499.99
    $3,499.99 - $3,499.99
    $3,499.99

    Explore Scientific 115mm f/5.5 FPL-53 Carbon Fiber APO Triplet Refractor With 3" Hexagonal Focuser

    Explore Scientific
    Sold Out

    The Explore Scientific 115mm f/5.5 FPL53 APO triplet could be the perfect combination telescope. Just big enough to do great observation and fast e...

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    $3,499.99 - $3,499.99
    $3,499.99
    $3,499.99 - $3,499.99
    $3,499.99
    Sold out
  • $2,249.99 - $2,249.99
    $2,249.99
    $2,249.99 - $2,249.99
    $2,249.99

    Explore Scientific 102mm f/7 Carbon Fiber FCD100 ED Triplet Refractor

    Explore Scientific
    In Stock

    This 102mm (4") Explore Scientific Carbon Fiber air-spaced ED triplet apochromatic refractor is loaded with quality optical performance at a surpri...

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    $2,249.99 - $2,249.99
    $2,249.99
    $2,249.99 - $2,249.99
    $2,249.99
  • $2,167.00 - $2,167.00
    $2,167.00
    $2,167.00 - $2,167.00
    $2,167.00

    TeleVue TV-85 3.35" (85mm) f/7 Evergreen Tube/Black Trim APO Refractor OTA

    TeleVue
    More on the way

    The TV-85 has a 2" dual-speed rack and pinion focuser with a brass non-marring clamp ring to hold star diagonals and accessories in place. It comes...

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    $2,167.00 - $2,167.00
    $2,167.00
    $2,167.00 - $2,167.00
    $2,167.00
  • $1,180.00 - $1,180.00
    $1,180.00
    $1,180.00 - $1,180.00
    $1,180.00

    Sky-Watcher 10" Quattro 250P Imaging Newtonian S11220

    Sky-Watcher
    In Stock

    If you are looking for a large fast optical system to enhance your astro-photography then the Quattro series from Sky-Watcher should fit the bill. ...

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    $1,180.00 - $1,180.00
    $1,180.00
    $1,180.00 - $1,180.00
    $1,180.00
  • $2,230.00 - $2,230.00
    $2,230.00
    $2,230.00 - $2,230.00
    $2,230.00

    Sky-Watcher Esprit 80mm f/5 ED Apochromatic Triplet Refractor With Field Flattener S11400

    Sky-Watcher
    In Stock

    The compact Sky-Watcher Esprit 80mm ED apochromatic triplet refractor has the premium high contrast/high resolution optical performance you need to...

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    $2,230.00 - $2,230.00
    $2,230.00
    $2,230.00 - $2,230.00
    $2,230.00
  • TV-60 60mm f/6 apo body
    $867.00 - $867.00
    $867.00
    $867.00 - $867.00
    $867.00

    TeleVue TV-60 60mm f/6 APO Refractor Body

    TeleVue
    More on the way

    This TeleVue TV-60 is a high performance 2.4" apochromatic doublet scope that will surprise you as much with the magnitude of its performance as it...

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    $867.00 - $867.00
    $867.00
    $867.00 - $867.00
    $867.00
  • FS-60CB 2.4" F/5.9 fluorite doublet apo
    $1,040.00 - $1,040.00
    $1,040.00
    $1,040.00 - $1,040.00
    $1,040.00

    Takahashi FS-60CB 2.4" f/5.9 Fluorite Doublet APO Refractor

    Takahashi
    More on the way

    This compact Takahashi refractor optical tube makes an ideal eclipse scope and a super travel and backyard scope for spur-of-the-moment observing. ...

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    $1,040.00 - $1,040.00
    $1,040.00
    $1,040.00 - $1,040.00
    $1,040.00
  • $2,140.00 - $2,140.00
    $2,140.00
    $2,140.00 - $2,140.00
    $2,140.00

    Sky-Watcher Starlux 190 Maksutov-Newtonian f/5.3 Optical Tube

    Sky-Watcher
    In Stock

    The Sky-Watcher f/5.3 190mm Maksutov-Newtonian optical system is a quality fast focal ratio performer that excels at deep space imaging and viewing...

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    $2,140.00 - $2,140.00
    $2,140.00
    $2,140.00 - $2,140.00
    $2,140.00
  • TSA-120 4.7" F/7.5 Ortho-Apochromat triplet refractor OTA
    $5,240.00 - $5,240.00
    $5,240.00
    $5,240.00 - $5,240.00
    $5,240.00

    Takahashi TSA-120 4.7" F/7.5 Ortho-Apochromat Triplet Refractor OTA

    Takahashi
    More on the way

    This Takahashi TSA-120 4.72" ED triplet refractor puts true-color "super apochromat" optical excellence in a portable 15.4 lb. package. This Takaha...

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    $5,240.00 - $5,240.00
    $5,240.00
    $5,240.00 - $5,240.00
    $5,240.00
  • $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
  • $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00

    Astro-Tech AT86EDQ f/7 Quad Refractor

    Astro-Tech
    In Stock

    This Astro-Tech AT86EDQ ED refractor has: 86mm f/7 fully multicoated four-lens/two-group refractor two ED lens elements amazing flat field astrop...

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    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
  • $2,990.00 - $2,990.00
    $2,990.00
    $2,990.00 - $2,990.00
    $2,990.00

    Takahashi Epsilon E-130D Astrograph

    Takahashi
    More on the way

    Wide-field imagers rejoice!  The Takahashi Epsilon E-130D telescope is an incredible wide-field imaging machine. The Epsilon series of astrographs ...

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    $2,990.00 - $2,990.00
    $2,990.00
    $2,990.00 - $2,990.00
    $2,990.00
  • $1,734.00 - $1,734.00
    $1,734.00
    $1,734.00 - $1,734.00
    $1,734.00

    TeleVue TV-76 3" (76mm) f/6.3 Ivory Tube/Black Trim APO Refractor OTA

    TeleVue
    In Stock

    This TeleVue TV-76 refractor has out of this world optics in a very compact 14.5" long body. It's small enough and light enough to take anywhere wi...

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    $1,734.00 - $1,734.00
    $1,734.00
    $1,734.00 - $1,734.00
    $1,734.00
  • NP101Is 4" f/5.4 Nagler-Petzval apochromatic refractor
    $4,267.00 - $4,267.00
    $4,267.00
    $4,267.00 - $4,267.00
    $4,267.00

    TeleVue NP101Is 4" f/5.4 Nagler-Petzval Apochromatic Refractor

    TeleVue
    More on the way

    This TeleVue NP-101is is a superb and highly portable apochromatic refractor for both visual observing and imaging . . . This updated and improved ...

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    $4,267.00 - $4,267.00
    $4,267.00
    $4,267.00 - $4,267.00
    $4,267.00
  • TOA-130NFB 5.1" Ortho-Apochromat Triplet Refractor OTA
    $8,110.00 - $8,110.00
    $8,110.00
    $8,110.00 - $8,110.00
    $8,110.00

    Takahashi TOA-130NFB 5.1" Ortho-Apochromat Triplet Refractor OTA

    Takahashi
    More on the way

    This performance of this 4" focuser Takahashi 5.1" ED triplet refractor is too good to let it be called simply an apochromatic scope. Only the term...

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    $8,110.00 - $8,110.00
    $8,110.00
    $8,110.00 - $8,110.00
    $8,110.00
  • TOA-130S 5.1" F/7.7 Ortho-Apochromat Triplet Refractor OTA
    $7,200.00 - $7,200.00
    $7,200.00
    $7,200.00 - $7,200.00
    $7,200.00

    Takahashi TOA-130NS 5.1" f/7.7 Ortho-Apochromat Triplet Refractor OTA

    Takahashi
    More on the way

    This performance of this Takahashi 5.1" ED triplet refractor is too good to let it be called simply an apochromatic scope. Only the term ortho-apoc...

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    $7,200.00 - $7,200.00
    $7,200.00
    $7,200.00 - $7,200.00
    $7,200.00
  • $4,399.00 - $4,399.00
    $4,399.00
    $4,399.00 - $4,399.00
    $4,399.00

    Celestron 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) Version 2 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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    $4,399.00 - $4,399.00
    $4,399.00
    $4,399.00 - $4,399.00
    $4,399.00

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