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Re; [ATM] Banishing the secondary



Here is a link to a very good drawing of the two mirror 4.25 inch 
schiefspiegler.  All the needed dimensions are there.  The S&T article 
referenced, although old, should be available through a public library.  
It is a very well written and practical article.  I have read it.

http://telescopemaking.org/schief.html

Mark Holm
mdholm@telerama.com
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