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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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  • $4,165.00 - $4,165.00
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    $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
  • $1,255.00 - $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
    More on the way

    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
  • Sold out
    $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
    Sold Out

    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
    Sold out
  • $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
    More on the way

    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

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