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Collimation Would like to know exact position of collimation screws or mechanism of the Canon 15x45 IS. Have X-rayed the binos, there are several screws immediately under the rubber cover, but which ones may be for collimation? Link to a photo with the rubber cover stripped, pointing out the correct screw would be a great solution:-) Collimation of any binos is easy once you find whichever mechanism the manufacturer chose; most often with screws on the housing or at the eyepeices, or with concentric rings at the front lenses of the binos. Only divert the tubes a little making two separate images next to each other, and then make adjustment with an object having vertical and horizontal lines. Like for instance a building... Knowing where the mechanism is on these particular binos would help a lot!

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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

  • 1 Answer

SOURCE: I lent my Celestron 9.25

What kind of a friend does that to someones scope without asking etc???

Posted on Nov 04, 2011

  • 1 Answer

SOURCE: Hi, I have bought a

Yes, you can do it.


Put the tube vertically on a table.

Remove the thumb wheel of regulation by unscrewing slightly the blocking screw with a key Allen of 1,5 mm.

Undo the 4 screws with a Phillips screwdriver.

Remove all the back part and you'll see the 6 screws of collimation.

The 3 longest are of use to the blocking, the shortest in the regulation.

Unscrew slightly the blocking screws before regulation.

It is necessary to make the little images of 2 mirrors coincide at the bottom inside the tube.

Also verify at the front part of the tube all the images of circles are concentric.

Don't block strongly the blocking screws after regulation.


Sorry for my bad English, I hope you'll understand.

Posted on May 28, 2012

Testimonial: "Thanks edualc78. There was one problem here, as I was wanting to collomate on a star image. The problem wasn't as course as visual mirror alignment. It is not bad really. Your description was very handy when it came to fixing the flip down mirror though, which had stuck. I thought I was looking at alignment screws at the back, so wasn't in a rush to dismantle it to fix the mirror. Took 5 min once I knew I was just looking at a cover! Regards Jim"

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Collimation of my lxd 55 8" tellescope i had to take off the secondry mirror and primery mirrror .due to kids play with them.i can seem to collimat the tellescope can you please tell my how to line...


The corrector lens must be perfectly centered and should have been replaced in the exact position as when you removed it. You are now left with trial and error-- turn the lens 10 degrees- check collimation-- turn the lens 10 more degrees check collimation etc etc -- until you are able to collimate the scope.


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Jul 01, 2011 | Meade LXD55 Telescope

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Hi, I have bought a Meade DS-2102 MAK. It has a hint of misalignment with the airey disc slightly off center in the extra focal rings. I can't find any reference to which are the collimation screws. ...


Yes, you can do it.


Put the tube vertically on a table.

Remove the thumb wheel of regulation by unscrewing slightly the blocking screw with a key Allen of 1,5 mm.

Undo the 4 screws with a Phillips screwdriver.

Remove all the back part and you'll see the 6 screws of collimation.

The 3 longest are of use to the blocking, the shortest in the regulation.

Unscrew slightly the blocking screws before regulation.

It is necessary to make the little images of 2 mirrors coincide at the bottom inside the tube.

Also verify at the front part of the tube all the images of circles are concentric.

Don't block strongly the blocking screws after regulation.


Sorry for my bad English, I hope you'll understand.

Apr 09, 2011 | Meade DS-2102MAK (20103) Telescope

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I lent my Celestron 9.25 SCT to a friend and he said he had collimation issues. He said he couldn't find the collimation screws on the secondary so he unseated the retainer ring and pulled the secondary...


Yes because the corrector plate must be replaced in the exact position it was removed. There were probably also small paper or cork "shims" around the glass plate that must also be replaced exactly. Your friend messed up your scope most likely.

YOU DO NOT need to remove the corrector plate to collimate an SCT. The collimation screws are on the center of the plate and accessible from in front of the scope.

Mar 08, 2011 | Celestron CG9-1/4 9.25-inch Schmidt...

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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

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/

Sep 29, 2009 | Celestron Celestar 8 Telescope

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

2 Answers

Double tunnel vision


I'm assuming that you have the dioptre set correctly for your eyes.

Normally this is caused by a collimation error, caused when one (or both) of the prisms move, even by a small amount.

You will need to get this repaired/serviced as this is not a DIY problem. (Unless, of course, you have a collimator lying around)

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1 Answer

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thought i answered this before but at my age who knows....the problem is water contains minerals that will eventyaully corrode the optics or at least the coatings.anyway if you want i can give you an esimate to repair....larry@reichinstruments.com

Nov 25, 2008 | Celestron Optics

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