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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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  • Original price $665.00 - Original price $665.00
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    Current price $665.00

    Sky-Watcher Quattro 150P Imaging Newtonian S11205

    Sky-Watcher
    In Stock

    Sky-Watcher Quattro 150P Imaging Newtonian Reflector The Sky-Watcher Quattro 150P is a fast, precision-engineered Newtonian reflector designed from...

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    Original price $665.00 - Original price $665.00
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    $665.00
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    Current price $665.00
  • Original price $4,267.00 - Original price $4,267.00
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    Current price $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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    Original price $4,267.00 - Original price $4,267.00
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    Current price $4,267.00
  • Original price $1,049.00 - Original price $1,049.00
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    $1,049.00
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    Current price $1,049.00

    Sky Rover 102 GPA Planetary 102mm f/11 Super ED Doublet APO Refractor

    Sky Rover
    More on the way

    There was a time when a four-inch f/11 refractor was the gold standard for planetary observation — the instrument that experienced observers reache...

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    Original price $1,049.00 - Original price $1,049.00
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    $1,049.00
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    Current price $1,049.00
  • Original price $999.00 - Original price $999.00
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    Current price $999.00

    Sky Rover 102 GPA 102mm f/7 Super ED Doublet APO Refractor OTA

    Sky Rover
    More on the way

    A 4-inch refractor has long been considered a turning point in visual observing. It retains the portability and ease of smaller instruments, but ad...

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    Original price $999.00 - Original price $999.00
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    $999.00
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    Current price $999.00
  • Original price $4,499.00 - Original price $4,499.00
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    Current price $4,499.00

    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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    Original price $4,499.00 - Original price $4,499.00
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    Current price $4,499.00
  • Original price $2,699.00 - Original price $2,699.00
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    Current price $2,699.00

    Astro-Tech AT126EDQ f/7 Quad Refractor

    Astro-Tech
    More on the way

    Most refractors need a separate field flattener to image properly. You buy the scope, then you buy the flattener, then you figure out the spacing, ...

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    Original price $2,699.00 - Original price $2,699.00
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  • Original price $2,599.00 - Original price $2,599.00
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    Current price $2,599.00

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

    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 th...

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    Original price $2,599.00 - Original price $2,599.00
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    Current price $2,599.00
  • Original price $2,340.00 - Original price $2,340.00
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    Current price $2,340.00

    Takahashi FOA-60Q Ortho Apochromatic Refractor

    Takahashi
    More on the way

    The included 1.7x extender takes the FOA-60 to another level, as well as letter.  This combination is referred to as the FOA-60Q.  You will simply ...

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    Original price $2,340.00 - Original price $2,340.00
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    Current price $2,340.00
  • Original price $4,280.00 - Original price $4,280.00
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    Current price $4,280.00

    Takahashi FSQ-85EDX "Baby Q" 3.35" F/5.3 Dual ED/Four Element Design

    Takahashi
    More on the way

    The new Takahashi FSQ-85ED (the "Baby Q") apochromatic ED quadruplet is a clear leader in the ranks of relatively small aperture refractors. Its fo...

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    Original price $4,280.00 - Original price $4,280.00
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    Current price $4,280.00
  • Original price $3,195.00 - Original price $3,195.00
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    $3,195.00
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    Current price $3,195.00

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

    Astro-Tech
    More on the way

    This newest Version A of the Astro-Tech AT10RCT carbon fiber Serrurier truss Ritchey-Chrétien Hot Product for 2015 makes high quality large-apertur...

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    Original price $3,195.00 - Original price $3,195.00
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    Current price $3,195.00
  • Original price $1,499.00 - Original price $1,499.00
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    $1,499.00
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    Current price $1,499.00

    Sky Rover 125 GPA 125mm f/7.8 Super ED Doublet APO Refractor OTA

    Sky Rover
    More on the way

    Five inches of refractor aperture used to mean a serious commitment — a heavy tube, a substantial mount, and a permanent spot in the observatory. T...

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    Original price $1,499.00 - Original price $1,499.00
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    Current price $1,499.00
  • Original price $1,999.00 - Original price $1,999.00
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    $1,999.00
    $1,999.00 - $1,999.00
    Current price $1,999.00

    Astro-Tech AT106EDQ f/7 Quad Refractor

    Astro-Tech
    More on the way

    You buy a refractor for imaging, and the first thing you learn is that you need a field flattener. Then you learn that the flattener has to match y...

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    Original price $1,999.00 - Original price $1,999.00
    Original price
    $1,999.00
    $1,999.00 - $1,999.00
    Current price $1,999.00
  • Original price $1,499.00 - Original price $1,499.00
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    $1,499.00
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    Current price $1,499.00

    ZWO FF80 APO Refractor OTA

    ZWO
    More on the way

    The ZWO FF80 APO is a highly refined 80mm f/7.5 quadruplet apochromatic refractor, built from the ground up to deliver uncompromising optical perfo...

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    Original price $1,499.00 - Original price $1,499.00
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    Current price $1,499.00
  • Original price $3,499.00 - Original price $3,499.00
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    Current price $3,499.00

    ZWO FF130 APO Refractor OTA

    ZWO
    More on the way

    The ZWO FF130 APO is a high-performance 130mm f/7.7 quadruplet refractor designed to meet the needs of astrophotographers and visual observers who ...

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    Original price $3,499.00 - Original price $3,499.00
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    $3,499.00
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    Current price $3,499.00
  • Original price $11,895.00 - Original price $11,895.00
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    $11,895.00
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    Current price $11,895.00

    Questar 7" Astro Maksutov-Cassegrain

    Questar
    Sold Out

    Observe through a Questar Seven Astro, and you'll see detail and clarity in the skies that you have never seen through a lesser scope, or even thro...

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    Original price $11,895.00 - Original price $11,895.00
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    $11,895.00
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  • Original price $14,695.00 - Original price $14,695.00
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    $14,695.00
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    Current price $14,695.00

    Questar 7" Classic Titanium Maksutov-Cassegrain, Magnesium Fluoride AR and Silver Reflecting Coatings, Quartz Mirror

    Questar
    Sold Out

    This Questar Seven Classic Titanium uses the same quartz mirror and coatings combination as the renowned 50th Anniversary 3.5" Questar, perhaps the...

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    Original price $14,695.00 - Original price $14,695.00
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    $14,695.00
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    Current price $14,695.00
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  • Original price $2,299.00 - Original price $2,299.00
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    $2,299.00
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    Current price $2,299.00

    ZWO FF107 APO OTA

    ZWO
    More on the way

     The ZWO FF series is a potential fit for your astro-photography needs. The ZWO FF107 APO is a finely crafted, high-performance apochromatic refrac...

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    Original price $2,299.00 - Original price $2,299.00
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    $2,299.00
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    Current price $2,299.00
  • Original price $5,999.99 - Original price $5,999.99
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    $5,999.99
    $5,999.99 - $5,999.99
    Current price $5,999.99

    Explore Scientific 140mm f/6.7 FPL-53 Carbon Fiber APO Triplet Refractor With 3" Hexagonal Focuser

    Explore Scientific
    Sold Out

    140mm has long been considered the perfect size for an APO refractor. Explore Scientific makes that size a reality with fantastic optics and mechan...

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    Original price $5,999.99 - Original price $5,999.99
    Original price
    $5,999.99
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    Current price $5,999.99
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  • Original price $2,195.00 - Original price $2,195.00
    Original price
    $2,195.00
    $2,195.00 - $2,195.00
    Current price $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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    Original price $2,195.00 - Original price $2,195.00
    Original price
    $2,195.00
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    Current price $2,195.00
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  • Original price $4,499.99
    Original price $4,499.99 - Original price $4,499.99
    Original price $4,499.99
    Current price $2,599.00
    $2,599.00 - $2,599.00
    Current price $2,599.00

    Explore Scientific 152mm f/8 FCD-1 ED Triplet Refractor, Carbon Fiber, 2.5" Hex Rack And Pinion Focuser

    Explore Scientific
    In Stock

    This big and optically excellent 152mm (6") Explore Scientific air-spaced ED triplet apochromatic refractor has a carbon fiber body and a 2.5" Hex ...

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    Original price $4,499.99
    Original price $4,499.99 - Original price $4,499.99
    Original price $4,499.99
    Current price $2,599.00
    $2,599.00 - $2,599.00
    Current price $2,599.00
    Save $1,900.99 Save $0.00
  • Original price $2,495.00 - Original price $2,495.00
    Original price
    $2,495.00
    $2,495.00 - $2,495.00
    Current price $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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    Original price $2,495.00 - Original price $2,495.00
    Original price
    $2,495.00
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    Current price $2,495.00
  • Original price $7,373.00 - Original price $7,373.00
    Original price
    $7,373.00
    $7,373.00 - $7,373.00
    Current price $7,373.00

    TeleVue NP127Is 5" f/5.2 Nagler-Petzval Apochromatic Refractor

    TeleVue
    More on the way

    The original Hot Product TeleVue NP-127is has long been regarded as one of the finest optical systems available for both visual observing and imagi...

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    Original price $7,373.00 - Original price $7,373.00
    Original price
    $7,373.00
    $7,373.00 - $7,373.00
    Current price $7,373.00
  • Original price $1,039.00 - Original price $1,039.00
    Original price
    $1,039.00
    $1,039.00 - $1,039.00
    Current price $1,039.00

    Sky Rover 80 GPS 80mm f/6 Super ED Triplet APO PRO Refractor OTA

    Sky Rover
    More on the way

    Eighty millimeters is the aperture where a refractor stops being a novelty and starts being a real telescope. The Sky Rover 80 GPS takes that thres...

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    Original price $1,039.00 - Original price $1,039.00
    Original price
    $1,039.00
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    Current price $1,039.00
  • Original price $12,795.00 - Original price $12,795.00
    Original price
    $12,795.00
    $12,795.00 - $12,795.00
    Current price $12,795.00

    Questar 7" Classic Titanium Maksutov-Cassegrain, Broadband Coatings

    Questar
    Sold Out

    There are mere mortal telescopes and then there is the Questar Seven Classic Titanium with broadband coatings, which inhabits a higher plane of ast...

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    Original price $12,795.00 - Original price $12,795.00
    Original price
    $12,795.00
    $12,795.00 - $12,795.00
    Current price $12,795.00
    Sold out

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