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Orion Telescopes

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27mm Orion Edge-On Flat Field Eyepiece
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  • 27mm focal length Edge-On eyepiece offers premium performance at an amazing price!
  • Flat-field design means sharp focus from edge to center of the eyepiece viewing field for top-notch views of everything in the night sky with moderate magnification
  • Eyepiece features multicoated 27mm optics, all-black anodizing, twist-up eye guards, and parfocal design
  • Large eye lens and long eye relief mean comfortable viewing - even for long observing sessions.
  • Threaded for use with 1.25" eyepiece filters


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Item #  08641

With most eyepieces, stars look sharp in the center of the field of view, but start getting fuzzy and flared toward the edge. To get better, "flat-field" performance, you have to pay big bucks for exotic ocular designs. Not anymore. Orion Edge-On eyepieces deliver remarkably flat fields — pinpoint-sharp stars from the center to the edge of the viewing circle. And best of all, their price won't flatten your wallet! You'll be as amazed by the value as you are by the views. Their 5- or 6-element optical design eliminates field curvature for distortion-free images. And Edge-Ons are parfocal, so you can change eyepieces without refocusing. With their big eye lenses, fully multi-coated lens elements, long eye relief, generous fields of view, twist-up eyeguards, and 1.25" barrels threaded for filters, Edge-On eyepieces have the features and quality you'll appreciate. Get the eyepieces with a flat-field edge — Orion Edge-Ons!

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.

  • Design
    Proprietary
  • Eyepiece focal length
    27.0mm
  • Barrel size
    1.25"
  • Apparent field of view
    53.0°
  • Eye relief
    21.0mm
  • Coatings
    Fully multi-coated
  • Number of elements
    5
  • Filter threads
    Yes
  • Parfocal
    Yes
  • Field stop diameter
    24.4mm
  • Barrel security recess
    Yes
  • Blackened lens edges
    Yes
  • Rubber eyeguards
    Yes
  • Body material
    Aluminum
  • Case
    No
  • Weight (oz.)
    6
  • Dimensions
    2.9 in. x 1.8 in.
  • Warranty
    One year

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