Thread: What is a "Crayford" focuser?
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Old 16-02-2007, 11:21 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline 		 
Join Date: May 2005
Location: Brisbane
Posts: 11,820
Have a look here for Crayford.
http://www.astronomics.com/main/cate...24W1JD4/Page/1

Here is another nice Crayford site too:
http://www.aqua.co.za/assa_jhb/new/Crayford.htm

Nice animation of a R&P here:
http://en.wikipedia.org/wiki/Rack_and_pinion

Cheers

Dennis
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