Skip to Store Area:

Orion 20mm Illuminated Centering Telescope Eyepiece

Double click on above image to view full picture

Zoom Out
Zoom In

More Views

  • Orion 20mm Illuminated Centering Telescope Eyepiece

Orion 20mm Illuminated Centering Telescope Eyepiece

SKU: ORI-08239

Email to a Friend

Be the first to review this product

Availability: Pre-order

$130.00
Add Items to Cart Add to Cart

Quick Overview

  • 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


Learn more


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.

These 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 LR-44 batteries (included) and weighs in at 8 oz.

Product Support
Visit our product support section for instruction manuals and more

Additional Information

DesignProprietary
Eyepiece focal length20.0mm
Barrel size1.25"
Apparent field of view70.0°
Eye relief16.0mm
CoatingsFully multi-coated
Number of elements5
Filter threadsYes
ParfocalYes
Field stop diameter25.0mm
Barrel security recessNo
Blackened lens edgesYes
Rubber eyeguardsYes
Body materialAluminum
CaseNo
Weight (oz.)8
WarrantyOne year
Add Your Tags:
Add Tags
Use spaces to separate tags. Use single quotes (') for phrases.