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Collimation via Eccentric Rings

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#1 btschumy

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Posted 12 May 2005 - 07:35 AM

Bill Cook said in another thread:

That particular model is collimated with eccentric rings, and if collimation is out, you can probably bring it into perfect alignment--for yourself--by just working with one set of rings.


Has anyone found a web page that describes how eccentric rings work and how to adjust them? I need something visual to help me get my mind around it.

#2 btschumy

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Posted 12 May 2005 - 07:51 AM

While Googling around I did find this very interesting page. It is a "FireTrucks and Equipment" technical manual and seems to have a wealth of information about optics.

http://www.tpub.com/...9-258/index.htm

The info on eccentric rings is on page 4-35.

#3 BillC

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Posted 12 May 2005 - 11:33 AM

Has anyone found a web page that describes how eccentric rings work and how to adjust them? I need something visual to help me get my mind around it.


Navy Rate Training Manual OM 3 & 2 (now reprinted by Dover Press as OPTICS AND OPTICAL INSTRUMENTS). You will also find some information in #5, #6, and # 7 of Amateur Telescope Making Journal--Now published in volume 1 of the Best of Amateur Telescope Making Journal, by Willmann-Bell publishing.

I used some drawings and photos. It is not all inclusive, but then I am saving that for the book. Also, I let my company take over the magazine, and I don't profit from sales of the books, except in that it does not hurt a freelancer to have his name on two, thick, well-respected books.

Hope this helps,

Bill


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