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Old 07-06-2014, 05:23 AM
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Don Pensack
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Don Pensack is offline
 
Join Date: Aug 2006
Location: Los Angeles
Posts: 534
You might find this handy as an explanation of where to start on a set of eyepieces. For a 10", I'd say X=50 to 60 would work just fine:
http://www.eyepiecesetc.com/1X_2X_3X...n-1x-2x-3x.htm
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