Orion 20mm Illuminated Centering Eyepiece - 1.25"

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Orion 20mm Illuminated Centering Eyepiece - 1.25"
$99.99
Item # OR-8239
OR
  • The Orion 20mm Illuminated Centering Eyepiece is the perfect eyepiece for alignment of GoTo systems.
  • An invaluable aid to centering guide stars and/or astro-imaging target objects.
  • The Orion 20mm Illuminated Reticle Eyepiece has a red LED crosshair precisely centered in eyepiece field of view for accurate results.
  • Wide 70-deg apparent field of view makes acquiring and centering target objects a breeze.
  • The Orion 20mm Illuminated Crosshair Eyepiece has a comfortable 16mm eye relief.
  • Fully multi-coated (all air-to-glass surfaces) with anti-reflection coatings for bright, crisp views.
Description

Details

Orion 20mm Illuminated Centering Eyepiece

You'll never be left in the dark with the Orion 20mm 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 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 LR-44 batteries (included) and weighs in at 8 oz. One-year limited warranty.

Orion 20mm Illuminated Centering Eyepiece Features

  • 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

Orion Product Number: 8239

Additional Information

Additional Information

SKU OR-8239
Manufacturer Orion
Optical Design Wide Angle
Barrel Size 1.25"
Warranty 1 Year Warranty
Eyepiece Field of View - Apparent 70ยบ
Eyepiece Focal Length 20mm
Eyepiece Eye Relief 16mm
Eyepiece Manufacturer Series Orion Illuminated
Eyepiece Weight 8 oz.
Field Stop 25mm
Number of Lens Elements & Groups 5 elements
Special Feature Illuminated
Comes with Dust Caps? Yes
Comes with Eye Guard? Yes
Reviews

Customer Reviews 6 item(s)

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.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Bill / (Posted on 10/13/2015)
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 <FL2000mm. It is quite large, and odd shaped, so stowing it safely can be a challenge.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Gil / (Posted on 7/20/2013)
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.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Sam / (Posted on 11/19/2012)
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.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Brian / (Posted on 10/16/2012)
Nice eyepiece for wide view alignment, which is better for my larger scope than the 12.5.

N.b.
The head of the eyepiece does rotate to focus the cross hairs!
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Rob / (Posted on 4/27/2012)
Got this one on sale. It does not really meet my needs. The cross hairs only focus for my eyes when my glasses are on. With them off, I can not see the cross hairs.

I use reticle eyepieces to align stars for goto. When I do that I crank the star out of focus to get the target pattern and prefer to put the cross hairs in the center of the pattern. IF you defocus the image in this eyepiece the cross hairs disappear.

This model would be quite useful for those who observe with glasses on, and who center stars when they are in focus. Be aware if you use different methods, this one may not work well for you.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by T. Hannan / (Posted on 4/6/2010)
Included Items

Included Items

  • Orion 20mm Illuminated Centering Eyepiece
  • Dust Caps
  • Rubber Illuminator Port Plug
  • 2x LR-44 Batteries
  • One Year Warranty
Questions & Answers

Product Questions

How do you focus the cross hairs on the 20mm illuminated centering eyepiece?
2
how do you change the battery for the eyepiece?
-1
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