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  1. TOA-130S 5.1" F/7.7 Ortho-Apochromat Triplet Refractor OTA Takahashi TOA-130NS 5.1

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

    $7,200.00
    3 Review(s)
    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-apochromatic is accurate enough to describe its optical excellence . . .
  2. Explore Scientific 152mm f/8 FCD-1 ED Triplet Refractor, Carbon Fiber, 3" HEX Rack and Pinion Focuser Explore Scientific 152mm f/8 FCD-1 ED Triplet Refractor, Carbon Fiber, 3

    Explore Scientific 152mm f/8 FCD-1 ED Triplet Refractor, Carbon Fiber, 3" HEX Rack and Pinion Focuser

    $5,499.99
    This big and optically excellent 152mm (6") Explore Scientific air-spaced ED triplet apochromatic refractor has a carbon fiber body and a 3" Hex rack and pinion focuser. It is superb for visual observing and long-exposure DSLR and CCD imaging.
  3. AR152 6" f/6.5 achromatic doublet refractor optical tube Explore Scientific AR152 6

    Explore Scientific AR152 6" f/6.5 achromatic doublet refractor optical tube

    $979.99
    16 Review(s)
    This 6" Explore Scientific AR152 achromatic refractor optical tube is a sensational value - a big 6" (152mm) and fast f/6.5 refractor that's priced like an 80mm scope.
  4. Astro-Tech AT150EDL Refractor OTA FCD-100 and Lanthanum f/8 Doublet with Hard Case Astro-Tech AT150EDL Refractor OTA FCD-100 and Lanthanum f/8 Doublet with Hard Case

    Astro-Tech AT150EDL Refractor OTA FCD-100 and Lanthanum f/8 Doublet with Hard Case

    $2,995.00
    The Astro-Tech AT150EDL takes the performance of the it smaller siblings and combines it with the mechanics of the EDT line.
  5. TOA-130NFB 5.1" Ortho-Apochromat Triplet Refractor OTA Takahashi TOA-130NFB 5.1

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

    $8,110.00
    2 Review(s)
    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 ortho-apochromatic is accurate enough to describe its optical excellence, both visually and for medium format and 35mm/large format CCD imaging . . .
  6. Explore Scientific140mm f/6.7 FPL-53 Carbon Fiber APO Triplet Refractor With 3" Hexagonal Focuser Explore Scientific140mm f/6.7 FPL-53 Carbon Fiber APO Triplet Refractor With 3

    Explore Scientific140mm f/6.7 FPL-53 Carbon Fiber APO Triplet Refractor With 3" Hexagonal Focuser

    $5,999.99
    2 Review(s)
    140mm has long been considered the perfect size for an APO refractor. Explore Scientific makes that size a reality with fantastic optics and mechanics.
  7. Sky-Watcher Esprit 150mm f/7 ED apochromatic triplet refractor with field flattener Sky-Watcher Esprit 150mm f/7 ED apochromatic triplet refractor with field flattener

    Sky-Watcher Esprit 150mm f/7 ED apochromatic triplet refractor with field flattener

    $8,250.00
    1 Review(s)
    The big Sky-Watcher Esprit 150mm ED apochromatic triplet refractor with thread-on field flattener combines premium high contrast/high resolution imaging performance with the flat field you need for critical imaging. It's a superb 6" apo refractor that can be the heart of your observing and wide field imaging system for years to come.
  8. TOA-150B 5.9" F/7.33 Ortho-Apochromat Triplet Refractor OTA Takahashi TOA-150B 5.9

    Takahashi TOA-150B 5.9" F/7.33 Ortho-Apochromat Triplet Refractor OTA

    $15,070.00
    4 Review(s)
    This big Takahashi 5.9" ED triplet refractor is optically too good to be called simply an apochromatic scope. Only the term ortho-apochromatic is good enough to describe its optical excellence . . .
  9. Save $901.00
    Sky-Watcher Evostar 150DX 150mm Apochomatic Refractor Optical Tube Sky-Watcher Evostar 150DX 150mm Apochomatic Refractor Optical Tube

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

    Regular Price: $4,100.00

    Special Price $3,199.00

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