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Orion Collimating Telescope Eyepiece
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Orion Collimating Telescope Eyepiece
$49.99
 
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  • Economical collimation tool ensures that your reflector telescope's optics are in precise alignment
  • Combination 5" long sight tube and 1.25" Cheshire eyepiece
  • For aligning optics of Newtonian reflectors, Dobsonian reflectors, and Schmidt-Cassegrain Telescopes (SCTs)
  • Peephole in top and crosshairs at bottom enable precise optical centering
  • Compatible with 1.25" telescope focusers or 2" focusers with a step-down adapter for using 1.25" accessories


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Item #  03640
Mfg Model #  03640
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To get the best images from your telescope, its optics must be in precise alignment. This economical tool will ensure that they are.

The Orion Collimating Eyepiece is a combination sight tube and Cheshire eyepiece, consisting of a 5"-long tube made of black-anodized aluminum. It fits in a 1.25" eyepiece holder. A peephole in the top and wire crosshairs at the bottom enable precise centering of Newtonian optical components. The polished 45-degree internal surface projects an annulus of light into the optical path to facilitate primary mirror alignment. Simply insert the Orion Collimating Eyepiece in the focuser drawtube and follow normal collimation steps.

Your Newtonian telescope will always be in excellent optical alignment! Instructions included.

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Shipping Info

Orders received by noon Pacific Time for in-stock items ship the same business day. Orders 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.

Reviews
Orion Collimating Telescope Eyepiece
Rating??
4.2 / 5
4.2 / 5
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Rating Breakdown 9 Reviews
5 stars
5
4 stars
3
3 stars
0
2 stars
0
1 star
1
Quality??
4.5 / 5
4.5 / 5
Value??
4.3 / 5
4.3 / 5
7 out of 8(88%)reviewers recommend this product.
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9
9 For the best images from your reflecting telescope, the optics need to be in precise alignment (also known as collimation). The Orion Collimating Eyepiece is an economical and accurate way to ensure perfect Newtonian mirror alignment every time.
Rating??
4.2 / 5
4.2 / 5
Open Ratings Snapshot
Rating Breakdown 9 Reviews
5 stars
5
4 stars
3
3 stars
0
2 stars
0
1 star
1
Quality??
4.5 / 5
4.5 / 5
Value??
4.3 / 5
4.3 / 5
7 out of 8(88%)reviewers recommend this product.
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Ratings summary
Rating??
4.2 / 5
4.2 / 5
Open Ratings Snapshot
Rating Breakdown 9 Reviews
5 stars
5
4 stars
3
3 stars
0
2 stars
0
1 star
1
Quality??
4.5 / 5
4.5 / 5
Value??
4.3 / 5
4.3 / 5
7 out of 8(88%)reviewers recommend this product.
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Product ReviewsWrite A Review
Rating??
5 / 5
5 / 5
A Great Collimating Tool
PostedDecember 6, 2008
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Randy S
 
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After dealing with the frustrations of using a cheap laser collimator on my 12" Dob, I decided to explore a different method and thus bought this combo collimator. Once I learned how it worked it is very easy to use and is versatile in that with a small LED flashlight, it can be used in total darkness. Extremely accurate I highly recommend it
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Rating??
5 / 5
5 / 5
Solid Product
PostedMay 12, 2012
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cbishop
 
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Owned this product for:Less than 3 mos
Quality??
5 / 5
5 / 5
Value??
5 / 5
5 / 5
This Collimator is a good buy. ITs accurate and Very Easy to use (After you get used to it). Starting out it is kinda tricky to understand what your doing at least for me i;m a novice. I had to use the Collimator that came with the scope to see what i was doing first since then i have used this one. I would recommend this to anyone. I am prob going to get a Laser collimator just because my scope is so big i dont want to walk from tthe back to the front of hte scope cause i'm lazy. This product does work well though again it may take a short time to get down what your doing. I almost sent it back till i finally got what i was doing wrong
Pros: cheap high accuacy
Cons: alittle learning curve to get what your doing.
Yes, I recommend this product!
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Rating??
5 / 5
5 / 5
Precise Collimation
PostedMarch 15, 2012
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DrSaturn
 
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from??Flat Rock, NC
Owned this product for:Less than 3 mos
Quality??
5 / 5
5 / 5
Value??
4 / 5
4 / 5
This is so much better than the laser collimator that came with my scope. This makes sure I get a precise collimation and its fairly easy to use. A quality product.
Favorite viewing location:??Blue Ridge Parkway Lookout
Favorite object to observe:??Orion Nebula
Yes, I recommend this product!
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4 / 5
4 / 5
Great for secondary mirror
PostedJanuary 13, 2012
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Clay C
 
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Owned this product for:Less than 3 mos
Quality??
4 / 5
4 / 5
Value??
5 / 5
5 / 5
I purchased this after realizing that with the collimation cap that came with my xt8, I could move the secondary mirror a considerable amount without really being able to tell which position it should be in. Once I placed the new collimation piece in, I knew exactly where the secondary should be.
The cross struts in the eyepiece can be overlaid on top of the spider cross struts to better see where the center is. The only thing is, your eyes can't focus on both at the same time, so one has to be blurry while the other clear. Because of this, you also still need the small collimation cap for the primary mirror.
I would really recommend buying the precision centering adapter, as the eyepiece is a bit small in the focuser tube, and with jiggle noticeably with the set screw. Otherwise, this is a great tool for your telescope.
Favorite viewing location:??Lake Claiborne
Favorite object to observe:??Whirlpool Galaxy
Yes, I recommend this product!
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