Orion 6" f/4 Newtonian Astrograph Reflector Telescope
Item #10269
4.2 / 5.0
$499.99
With fast f/4 optics and 94% reflectivity coatings, this 6" Newtonian Astrograph acquires high-resolution images of deep-sky objects with short exposure times so you can get great results quickly. Includes 8x50 finder, hinged tube rings and more.
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This item is on backorder and expected by 05/25/2022.
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  • More Info
    • Fast 6"-aperture reflector lets you take short exposures with bright, high-resolution results
    • Precise 2" dual-speed (10:1) linear-bearing Crayford focuser lies 7" back in the optical tube to block stray light and boost contrast
    • Orion-exclusive steel reinforcement plate under focuser eliminates flexure with heavy imaging gear attached
    • Compact 22.5" length and light 12.7 lb. assembled weight doesn't require an enormous mount
    • Includes two heavy-duty hinged tube rings, 8x50 finder scope, dovetail mounting bar, and more

    Our 6" aperture imaging reflector is loaded with useful features to help you capture high-resolution images of the night sky. With very fast f/4 optics and 94% reflectivity coatings, the Orion 6" Newtonian Astrograph will help you acquire outstanding high-resolution images of deep-sky objects with delightfully short exposure times so you can get great results in less time. What's more, this compact imaging specialist is conveniently lightweight at just 12.7 lbs., so it doesn't require a huge mount to support it.

    The rolled-steel Newtonian Reflector optical tube's 6"-aperture parabolic primary mirror measures 610mm in focal length, making the optically fast f/4 Astrograph a perfect choice for going after wide-field images of distant deep-space objects. Since the primary mirror is made of thermally stable B270 glass, it acclimates to ambient temperature more quickly than standard reflector telescopes. An oversized, 63mm minor axis secondary mirror provides excellent field illumination for DSLR and CCD cameras. Both primary and secondary mirrors boast enhanced reflectivity (94%) aluminum coatings to optimize contrast with a protective silicon dioxide (quartz) overcoat. 

    The 6" f/4 Newtonian Astrograph Reflector features a precise, 2" dual-speed (10:1) linear-bearing Crayford focuser which lies 7" back from the front of the 22.5" long optical tube. This recessed focuser position helps maximize contrast by blocking stray off-axis light for high-resolution performance. The super-steady linear-bearing Crayford focuser design will hold heavy imaging payloads without slippage. For consistent results every night, an Orion-exclusive steel reinforcing plate underneath the focuser eliminates flexure, even with heavy cameras and other imaging gear attached. A 2" compression ring collar and 1.25" compression adapter keep inserted cameras and accessories secure without scratching. 

    Of course, the 6" f/4 Newtonian Astrograph can also be used for spectacular visual observations of deep-sky and solar system based celestial objects. An included 2" diameter extension tube adds 1.38" (35mm) of length to the focuser for visual use. The reflector's 6" aperture and fast focal ratio will amaze you with high-contrast views of the cosmos.

    A pair of hinged, die-cast aluminum tube rings with felt lining are included, which each have flat bosses on the top and bottom featuring M6 threaded sockets for easy attachment of the included Vixen-style mounting bar and additional imaging accessories. An 8x50 straight crosshair finder scope with dovetail bracket and snap-on dust cap are also included.

    As with any fast Newtonian reflector telescope, an optional coma corrector is recommended to eliminate inherent coma for optimized imaging performance.

    Warranty

    Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.

    Product Support

    Visit our product support section for instruction manuals and more

  • Specs
    • Best for viewing:
      Brighter deep sky
    • Best for imaging:
      Deep sky
    • User level:
      Intermediate
    • Optical design:
      Reflector
    • Optical diameter:
      150mm
    • Focal length:
      610mm
    • Focal ratio:
      f/4.1
    • Optics type:
      Parabolic
    • Glass material:
      Low thermal expansion glass
    • Resolving power:
      0.77arc*sec
    • Lowest useful magnification:
      21x
    • Highest useful magnification:
      177x
    • Highest theoretical magnification:
      300x
    • Limiting stellar magnitude:
      13.5
    • Optical quality:
      Diffraction limited
    • Finder scope:
      8x50
    • Focuser:
      2" dual-speed linear bearing Crayford
    • Secondary mirror obstruction:
      63mm
    • Secondary mirror obstruction by diameter:
      42%
    • Secondary mirror obstruction by area:
      18%
    • Mirror coatings/over-coatings:
      Aluminum & Silicon Dioxide
    • Mount type:
      Optical Tube without Mount
    • Astro-imaging capability:
      Lunar, planetary & long exposure
    • Backfocus distance:
      77.1mm
    • Tube material:
      Steel
    • Length of optical tube:
      22.5 in.
    • Weight, optical tube:
      12.7 lbs.
    • Additional included accessories:
      Pair of hinged tube rings, 2" extension tube, 13" Vixen-type dovetail bar, 8 x 50 finder, dust cover
    • Other features:
      Steel reinforcing plate under focuser, Oversized secondary mirror for fully illum. field, Extended length front tube to block ambient light
    • Warranty:
      One year
  • In The Box

    Orion 6" f/4 Newtonian Astrograph Reflector Telescope OTA
    Pair of hinged tube rings
    8x50 finder scope and bracket
    2" extension tube for visual use
    Narrow Vixen-style dovetail mounting bar
    Dust cap
    Starry Night SE astronomy software digital download insert

  • Important Shipping Information

    Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

    A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

    Standard Delivery: $0.00
    Standard Delivery to Canada: $40.00
    3 Day Delivery: $50.00
    2 Day Delivery: $50.00
    Next Day Delivery: $75.00

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