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Posted by Dougthompson on June 29, 2002 01:06:43 UTC

Hello I am new to this site. I am building a 8" telescope and am looking to make a Cassegrainian(I think,hole through the main mirror.)May I have this cut through my blank or? Also were do I obtain pitch to polish the mirror.How short of a focal length may I use. Any help.

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