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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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  • $320.00 - $320.00
    $320.00
    $320.00 - $320.00
    $320.00

    Sky-Watcher Skymax 102 102mm f/12.75 Maksutov-Cassegrain Optical Tube S11510

    Sky-Watcher
    More on the way

    The Sky-Watcher 102mm Maksutov-Cassegrain is an inexpensive step up from a 90mm Mak. This compact optical powerhouse is capable of producing sharp,...

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    $320.00 - $320.00
    $320.00
    $320.00 - $320.00
    $320.00
  • $3,210.00 - $3,210.00
    $3,210.00
    $3,210.00 - $3,210.00
    $3,210.00

    Sky-Watcher Esprit 100mm f/5.5 ED Apochromatic Triplet Refractor With Field Flattener S11410

    Sky-Watcher
    More on the way

    The Sky-Watcher Esprit 100mm ED apochromatic triplet refractor has the premium high contrast/high resolution/flat field optical performance you nee...

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    $3,210.00 - $3,210.00
    $3,210.00
    $3,210.00 - $3,210.00
    $3,210.00
  • $540.00 - $540.00
    $540.00
    $540.00 - $540.00
    $540.00

    Sky-Watcher Evostar 72mm f/5.8 ED Doublet Apochromatic Refractor

    Sky-Watcher
    In Stock

    The Evostar 72ED is a portable powerhouse. It is true that great things can come in a small package.. This Sky-Watcher Evostar 72ED apochromatic re...

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    $540.00 - $540.00
    $540.00
    $540.00 - $540.00
    $540.00
  • $1,500.00 - $1,500.00
    $1,500.00
    $1,500.00 - $1,500.00
    $1,500.00

    Sky-Watcher Skymax 180 180mm f/15 Maksutov-Cassegrain Optical Tube S11540

    Sky-Watcher
    More on the way

    The Sky-Watcher 180mm Maksutov-Cassegrain folded optical system comes close in optical performance to the best-known ultra-premium 7" Maksutov, but...

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    $1,500.00 - $1,500.00
    $1,500.00
    $1,500.00 - $1,500.00
    $1,500.00
  • $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00

    Sky-Watcher Skymax 127 f/11.8 Maksutov-Cassegrain Optical Tube

    Sky-Watcher
    In Stock

    The Sky-Watcher 127mm Maksutov-Cassegrain folded optical system is a compact optical powerhouse capable of producing sharp, high contrast images in...

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    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00
  • $880.00 - $880.00
    $880.00
    $880.00 - $880.00
    $880.00

    Sky-Watcher Skymax 150 150mm f/12 Maksutov-Cassegrain Optical Tube S11530

    Sky-Watcher
    In Stock

    The Sky-Watcher 150mm (5.9") Maksutov-Cassegrain folded optical system is a compact optical powerhouse capable of producing sharp, high contrast im...

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    $880.00 - $880.00
    $880.00
    $880.00 - $880.00
    $880.00
  • $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00

    Sky-Watcher Evoguide 50DX APO Refractor/ Guidescope S11174

    Sky-Watcher
    In Stock

    Sky-Watcher EvoGuide 50DX 50mm ED APO Refractor / Guidescope The Sky-Watcher EvoGuide 50DX brings apochromatic performance to a compact, lightweigh...

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    $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00
  • $830.00 - $830.00
    $830.00
    $830.00 - $830.00
    $830.00

    Sky-Watcher 8" Quattro 200P Imaging Newtonian S11210

    Sky-Watcher
    In Stock

    If you are an astro-photographer looking for a fast optical system at a fantastic price then the Quattro series is for you. The Sky-Watcher 8" f/4 ...

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    $830.00 - $830.00
    $830.00
    $830.00 - $830.00
    $830.00
  • $4,165.00 - $4,165.00
    $4,165.00
    $4,165.00 - $4,165.00
    $4,165.00

    Sky-Watcher Esprit 120mm f/7 ED Apochromatic Triplet Refractor With Field Flattener S11420

    Sky-Watcher
    In Stock

    The big Sky-Watcher Esprit 120mm ED apochromatic triplet refractor with thread-on field flattener combines premium high contrast/high resolution im...

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    $4,165.00 - $4,165.00
    $4,165.00
    $4,165.00 - $4,165.00
    $4,165.00
  • $2,490.00 - $2,490.00
    $2,490.00
    $2,490.00 - $2,490.00
    $2,490.00

    Sky-Watcher Evostar 120mm f/7.5 ED Doublet Apochromatic Refractor S11130

    Sky-Watcher
    In Stock

    This 120mm Sky-Watcher Evostar 120ED is a premium doublet apochromatic refractor with highly-reviewed high contrast/high resolution optics that Sky...

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    $2,490.00 - $2,490.00
    $2,490.00
    $2,490.00 - $2,490.00
    $2,490.00
  • $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
  • $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
  • $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
  • $8,250.00 - $8,250.00
    $8,250.00
    $8,250.00 - $8,250.00
    $8,250.00

    Sky-Watcher Esprit 150mm f/7 Ed Apochromatic Triplet Refractor With Field Flattener S11430

    Sky-Watcher
    More on the way

    The big Sky-Watcher Esprit 150mm ED apochromatic triplet refractor with thread-on field flattener combines premium high contrast/high resolution im...

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    $8,250.00 - $8,250.00
    $8,250.00
    $8,250.00 - $8,250.00
    $8,250.00
  • $4,100.00 - $4,100.00
    $4,100.00
    $4,100.00 - $4,100.00
    $4,100.00

    Sky-Watcher Evostar 150DX 150mm Apochomatic Refractor Optical Tube S11195

    Sky-Watcher
    In Stock

    The Sky-Watcher Evostar 150DX is one of the most affordable 6" ED doublet refractors available today with a large format rack and pinion focuser. S...

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    $4,100.00 - $4,100.00
    $4,100.00
    $4,100.00 - $4,100.00
    $4,100.00
  • $1,815.00 - $1,815.00
    $1,815.00
    $1,815.00 - $1,815.00
    $1,815.00

    Sky-Watcher 12" Quattro 300P Imaging Newtonian S11230

    Sky-Watcher
    More on the way

    The Sky-Watcher 12" Quattro will bring your imaging into the next level. The Sky-Watcher 12" f/4 Quattro Imaging Newtonian has . . . 305mm apertu...

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    $1,815.00 - $1,815.00
    $1,815.00
    $1,815.00 - $1,815.00
    $1,815.00
  • $595.00 - $595.00
    $595.00
    $595.00 - $595.00
    $595.00

    Sky-Watcher Quattro 150P Imaging Newtonian S11205

    Sky-Watcher
    More on the way

    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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    $595.00 - $595.00
    $595.00
    $595.00 - $595.00
    $595.00

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