Orion 20mm Illuminated Centering Telescope Eyepiece
Item #08239
4.0 / 5.0
Free Standard Shipping
$129.99
For testing the accuracy of your tracking system, or centering stars for GoTo system alignment, the wide field of the Orion 20mm Illuminated Centering Eyepiece makes it easy. Just use the illuminated crosshair to acquire and center any star.
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This item is on backorder and expected by 05/10/2024.
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  • More Info
    • Relatively low-power 20mm 1.25" telescope eyepiece with an illuminated crosshair reticle with myriad uses is a welcome addition to any astronomer's accessory case
    • The perfect telescope eyepiece for alignment of computerized GoTo systems or IntelliScope systems with a comfortable 16mm eye relief
    • An invaluable aid to centering guide stars and astrophotography target objects - you'll wish you had one long ago!
    • Illuminated crosshair precisely centered in eyepiece field of view for accurate results
    • Wide 70-degree apparent field of view makes acquiring and centering target objects a breeze

    You'll never be left in the dark with the Orion 20mm Illuminated Centering Telescope Eyepiece. Whether you're acquiring and centering stars for GoTo system alignment, lining up guide stars and/or target objects for astrophotography, or just testing the accuracy of your tracking system, the 20mm Illuminated Centering Telescope Eyepiece will quickly become one of your most trusted and useful imaging tools.

    In comparison to most standard low-focal length illuminated reticle telescope eyepieces, the 20mm Illuminated Centering Telescope Eyepiece offers a relatively long 20mm focal length and a wide 70-degree apparent field-of-view, making it easier to locate desirable targets for alignment or guiding. This virtually eliminates the need for swapping out high-power illuminated reticles with lower power eyepieces in order to center objects.

    The Illuminated Centering Eyepiece is fully multi-coated (all air-to-glass surfaces) with anti-reflection coatings for bright, crisp views. It features a great 16mm eye relief and the barrel is threaded for Orion 1.25" filters. The illuminator switch doubles as a "dimmer" allowing you to adjust cross-hair brightness to the desired level.

    The illuminator is powered by two AG5 button cell alkaline batteries (included). The Illuminated Centering Eyepiece weighs 8 ounces.

    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
    • User level:
      Intermediate
    • Design:
      Proprietary
    • Eyepiece focal length:
      20.0mm
    • Barrel size:
      1.25"
    • Apparent field of view:
      70.0°
    • Eye relief:
      16.0mm
    • Coatings:
      Fully multi-coated
    • Number of elements:
      5
    • Filter threads:
      Yes
    • Parfocal:
      Yes
    • Field stop diameter:
      25.0mm
    • Barrel security recess:
      No
    • Blackened lens edges:
      Yes
    • Rubber eyeguards:
      Yes
    • Body material:
      Aluminum
    • Case:
      No
    • Weight (oz.):
      8
    • Warranty:
      One year
  • In The Box

    Orion 20mm Illuminated Centering Telescope Eyepiece
    Dust caps
    Rubber illuminator port plug
    2x AG5 batteries

  • 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.

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