Thread: Double Star observing
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  #6  
Old 31-07-2010, 07:39 PM
Karls48 (Karl)
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Karls48 is offline 		 
Join Date: Jan 2006
Location: Sydney
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Have a look on Reduc - free software for measuring PA and separation of binary stars.
http://www.astrosurf.com/hfosaf/uk/tdownload.htm
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