Thread: Ngc 6188
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Old 07-08-2005, 01:32 PM
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davidpretorius
lots of eyes on you!

davidpretorius is offline 		 
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
any easy way to work out degree of viewing. ie with 1250 fl and 25mm ep, what is the way to calculate degree of viewing?
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