Thread: Secondary mirrors - source/quality?
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Old 05-06-2018, 07:20 AM
garymck (Gary)
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garymck is offline 		 
Join Date: Aug 2005
Location: Geelong
Posts: 822
Just used Mel Bartels Diagonal Calculator:
http://www2.arnes.si/~gljsentvid10/diagonal.htm

Think 3.1" will be big enough....

cheers
Gary
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