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Out of collimation - Nikon 10x25 Dcf Sportlite Binoculars Silver & Black

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Is there an adapter so I can fit my 2"Collimation Tool into my .965" eyepiece holder on my telescope

There are adapters, but normally a 2" collimation tool is way way too heavy for a .965 eyepiece holder. Most of the eyepiece holders are made from plastic, and they break fairly easily, so you take a big chance of your 2" collimation tool dropping to the floor or concrete. Even if the plastic did not break, the weight of the collimation tool would bend the eyepiece holder out of position. It only takes the slightest amount to make your test worthless - after all, you're after precision. Bending or distorting anything destroys the precision. They do make 1.5" collimation tools, and there are adapters to get from the tool to your eyepiece holder. They also make things called "cheshire eyepieces" and regular collimating tools which will work with your 4" reflector.

Nov 05, 2017 | Celestron Cameras

2 Answers

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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Look through viewhole & see nothing. been told mirrors may need collimated (just recieved back from repair service for bad motor). How do I go about getting & using collimating eqpt

Collimation would NOT completely stop you from seeing something.

Put the eyepiece with the largest number written on it into the focuser. DO NOT use the 2x barlow if you have one. Take the scope outside during the day time and practice focusing on a distant object.

Watch this video:

Feb 16, 2011 | Celestron NexStar 130GT (306 x 130mm)...

1 Answer


Read these web site articles:

Jan 03, 2011 | Celestron CGE-1400 Telescope

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 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

Telescope does not focus has not been used in a while but has been kept indoors .

It may be out of collimation:

Read these web sites:

Aug 28, 2010 | Celestron NexStar 11 GPS (660 x 279mm)...

1 Answer

When I look at a single object like a star, I see four stars in a perfect line.

Your scope may need collimation-- see these web sites:

Aug 14, 2010 | Meade LX200GPS Telescope

1 Answer

I bought a used Bushnell 114m reflector, needs alinement

I suppose you are talking about collimation is way off.

Read and watch these to get an idea of how to collimate a reflector

Feb 07, 2010 | Bushnell Optics

1 Answer


Visit this web site and watch the video:

Nov 11, 2009 | Optics

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