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Orion Telescopes

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Orion 8" f/4.0 Newtonian Astrograph Reflector Telescope
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  • Affordable 8" astrograph reflector telescope excels at wide-field astrophotography with short exposure times
  • 200mm aperture f/4.0 parabolic primary optics made with high-quality BK-7 glass feature enhanced aluminum coatings to provide >91% reflectivity for bright, vivid astrophotography performance
  • Short focal length and big aperture let you capture more light from deep sky objects in less time, greatly improving your imaging efficiency
  • Compact and lightweight at just 28" long and 16 lbs. the 8" f/4.0 Newtonian Astrograph telescope optical tube can help keep the combined weight of your astro-imaging setup manageable
  • Includes 8x50 finder scope, hinged tube rings, cooling accelerator fan for swift ambient temperature acclimation, Starry Night software, and more! A coma corrector is recommended for optimal flat-field performance (sold separately)


Learn more
Item #  09527

Media Buzz

Astronomy Magazine, November 2010

“I found this telescope a total pleasure to use. The precise mechanical operation of its focuser made all the difference in the world. Sharp arcsecond-sized star images filled the field of view on successive 5-minute exposures with an absolutely stunning amount of nebulosity visible on my DSLR’s screen... Orion’s 8-inch f/4.0 Newtonian Astrograph Reflector allows budget-minded sky shooters access to a new level of high-quality imaging.”

In keeping with our philosophy of offering great astrophotographic gear at affordable prices, we’re pleased to offer our 8" f/4.0 Newtonian Astrograph Reflector. For wide field, deep-space imaging performance, this telescope has few rivals. Its big 8" aperture and fast f/4.0 focal ratio allow the capture of faint galaxies and nebulas with short photographic exposure times — and for a fraction of the price that a premium "apo" refractor of even half its size would cost!

Our Orion 8" f/4.0 Newtonian Astrograph Reflector is perfect for beginning and intermediate star shooters, and a great second telescope for more advanced imagers who want more portability, without sacrificing features and quality. That means bright, detailed images for APS-C sized CCD or DSLR cameras. As with any fast Newtonian reflector, an optional coma corrector is recommended to achieve the sharpest images. With an optional eyepiece, this telescope doubles as a fine visual instrument for scanning solar system and deep-space wonders.

Only 16 lbs. and just 28" long, this instrument is easily supported on a mid-sized mount. The 200mm-aperture parabolic primary mirror is made from high-quality BK-7 optical glass. Enhanced aluminum mirror coatings with greater than 91% reflectivity deliver more light to the focuser. A cooling accelerator fan is included, mounted on the back of the primary mirror cell for rapid equilibration to ambient temperature.

We outfitted the 8" f/4.0 Astrograph with a modified, all-machined 2" dual-speed Crayford focuser that incorporates a special linear-track bearing. This advanced focuser design provides superior camera support and eliminates the drawtube flexure inherent in many standard Crayford focusers. The dual-speed feature allows both coarse and very fine (10:1) focusing precision. Standard accessories include a pair of hinged tube rings and an 8x50 finder scope.

Great telescopes for astrophotography don’t have to cost thousands! In fact, you can own an 8" imaging-optimized Newtonian reflector for well under $500! Get the Orion 8" f/4.0 Newtonian Astrograph Reflector today.

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 800-676-1343.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • Best for viewing
    Brighter deep sky
  • Best for imaging
    Deep sky
  • User level
    Advanced
  • Optical design
    Reflector
  • Optical diameter
    200mm
  • Finder scope lens diameter
    50mm
  • Focal length
    800mm
  • Focal ratio
    f/4.0
  • Optics type
    Parabolic
  • Glass material
    BK-7
  • Resolving power
    0.56arc*sec
  • Lowest useful magnification
    29x
  • Highest useful magnification
    300x
  • Highest theoretical magnification
    400x
  • Limiting stellar magnitude
    14.2
  • Optical quality
    Diffraction limited
  • Finder scope
    8x50
  • Focuser
    2" dual-speed linear bearing Crayford
  • Secondary mirror obstruction
    70mm
  • Mirror coatings/over-coatings
    Aluminum & Silicon Dioxide
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Tube material
    Steel
  • Length of optical tube
    27.5 in.
  • Weight, optical tube
    16.0 lbs.
  • Additional included accessories
    Tube rings, Cooling accelerator fan, 2" to 1.25" adapter
  • Warranty
    One year
8" f/4 Astrograph reflector optical tube
8x50 Finder scope
Tube rings 
Cooling accelerator fan  

Orders received by 1pm Eastern Time for in-stock items ship the same business day. Orders received after 1pm 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
3 Day Delivery: $45.00
2 Day Delivery: $45.00
Next Day Delivery: $55.00

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