Thread: Secondary size for 14" f/4.5 primary mirror
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Old 04-01-2014, 08:21 AM
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anj026
Plyscope

anj026 is offline 		 
Join Date: Oct 2006
Location: Perth
Posts: 532
For general visual use 0.5" fully illuminated should be fine. This table by Mike Lockwood is a useful reference.

http://www.loptics.com/ATM/diagonals.html
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