Orion 20mm Illuminated Centering Eyepiece - 1.25"

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Orion 20mm Illuminated Centering Eyepiece - 1.25"

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

In comparison to most standard low-focal length illuminated reticle eyepieces, the Orion ICE offers a relatively long 20 mm 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 16 mm eye relief and the barrel is threaded for Orion 1.25-inch 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-ounces. One-year limited warranty.

Orion 20 mm Illuminated Centering Eyepiece Features

  • Relatively low-power 20 mm 1.25-inch 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 16 mm 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

Orion Product Number: 8239


Dust Caps IncludedYes
Eye Guard IncludedYes
Eyepiece Apparent FOV70 degrees
Eyepiece Eye Relief16mm
Eyepiece OpticsWide Angle
Eyepiece Special FeatureIlluminated
Field Stop25mm
Focal Length20mm
Lens Elements & Groups5 elements
ModelOrion Illuminated
Warranty1 Year Warranty
Customer Reviews
4.5 Based on 8 Reviews
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eric c.
United States United States

I haven’t had a chance to use it as it’s been overcast ever since it arrived. It you could guarantee clear skies along with the fast delivery and solid build quality it would definitely be a 6 star rating.

Robert J.
United States

A great product to help center what you are viewing.

Great eye piece. center target in eyepiece is easy

Center target in eyepiece, change eyepiece and your on target with new eyepiece. No hunting when you switch to higher power. Great real nice wide angle view.

Great for GoTo set up

Using this cross hair eyepiece makes GoTo mounts much more accurate, and set up easy. Once you have calibrate the finder to the eyepiece cross hairs, the low power and wide field mean that if you have centered the target in your finder, you will see it in your field. The dimmer has a wide range of brightnesses. For drift polar alignment this eyepiece is a little too long, and most people will get impatient if their scope is

Good, with ONE WARNING!

I am finding the illuminated eyepiece very useful. ONE THING!: the metal the illuminator is made from is apparently VERY soft aluminum. If you aren't Very gentle with it (like tightening it with your pinky and thumbyou can easily overtighten it. I have NEVER had ANY piece of equipment that was so easy to mess up the threading on. Mine still works, but it no longer threads in completely, and I've had it for less than 48 hours. Just BE CAREFUL! Otherwise, seems to work very well. (Oh, and I see no evidence of the grid pattern one of the other reviews mentioned. Maybe they're thinking of a different eyepiece. This one just has cross-hairs, which is what I wanted.

20mm Illuminated Centering Eyepiece

Having purchased one of these I am very pleased with the ease of use and importantly the fact that the illuminated crosshair transforms into a fine grid pattern for final accurate centering. I gave this item 5 stars. Than guys. Brian.