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Collimate location of adjustment screws

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Posted on Jan 02, 2017

SOURCE: collimation screws on the Celestar C8

If you are going to replace them contact "Bob's Knobs" and order the replacement thumb screws. Makes collimation much easier, no Allen wrench needed.
http://www.bobsknobs.com/

Posted on Oct 01, 2009

SOURCE: Difficulty with Skywatcher pro 150 collimation.

Watch this video on collimation.

http://www.andysshotglass.com/Collimating.html

Posted on Oct 04, 2009

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1 Answer

How to align bonoculars


Cheaper binoculars may have no adjustment means for this at all (it is called "collimation"). Properly it should be done by adjusting the front lens in its seat, and quality binoculars have an eccentric ring around the lens under the clamp ring so that can be done.

Your Tasco probably does not have that, so look under the covering material on the barrels (it may be stuck down) for 2 small screws over the prism eg

http://www.oberwerk.com/support/images/coll1.jpg
http://www.cloudynights.com/ubbthreads/attachments/1037129-colscrews.jpg

Gross collimation can be done in daylight, but fine adjustment is best done with a point source like a star.

http://www.youtube.com/watch?v=4cqJwV2moto
http://www.oberwerk.com/support/collimate.htm
http://www.cloudynights.com/item.php?item_id=416
http://barska.com/collimation_bc201.pdf

Apr 12, 2014 | Tasco Optics

1 Answer

10X40 monocular. Prism is loose and has come out of place. 2nd one I've had trouble with. How do I realign the prism?


I ASSUME this device has collimation screws on the side of the barrel-- if it does not then the prism cannot be aligned.

If it does have collimation screws then hold the small monocular up to a lighted window and adjust the screws until you get a ROUND circle of light-- if you see a "catseye" light circle the prism is not collimated.

Aug 30, 2011 | Barska Optics Optics

1 Answer

I am trying to collimate a nexstar 130 slt scope but i am unable to see the 3 primary mounting clips thru the collimator. everything else seems to be in the center of the primary.is it collimated ok?


The primary mirror is adjusted from the bottom of the tube. A second person adjusting the screws while you look through the collimator is what you need to do.

Nov 21, 2010 | Optics

1 Answer

Winchester WL-7350WR 7X35 binos out of aligngment/colimation- need to re-adjust. Don't know if there's any objective lens alignment method, but I have found the rear adjusting screws for the prisms under...


There are another set of adjusting grub screws not just these! If you need to collimate them then you will need to adjust the correct ones to avoid what is known as "conditional collimation" where they are only good for people with the same IPD (interpupilary distance). If you feel confident that you can do this fine. But first is there any leaning field obvious? Using one side at a time and looking at a horizontal or vertical object (like a flagpole) show any lean when compared to the visual appearance? If it does then you need to send them to a service centre for correct alignment.

Feb 23, 2010 | Winchester Optics

1 Answer

Out of focus


Yes it's called collimation:

http://www.andysshotglass.com/Collimating.html

Watch this video.

Aug 11, 2009 | Tasco Luminova 40076420 (420 x 76mm)...

4 Answers

Dropped new Celestron Skymaster 15x70 binoculars. Nothing appears broken, but now have two images. Can I repair this. and how? Thanks. Dan


Don't "unscrew" the binoculars. there are no user servicable parts inside. the collimnation adj screws are beneath the rubber boot just under where your index fingers rest when looking through the bino's. use a jewelers screwdriver to tease the boot up and stick a small nut or something in. then put the binos on a stable surface and play with the screws a bit while watching the images. you can get them pretty close this way.

Jul 21, 2009 | Optics

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