Thread: Exposure time
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  #9  
Old 25-11-2016, 07:34 PM
raymo
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raymo is offline 		 
Join Date: Sep 2011
Location: margaret river, western australia
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At what Dec do you apply the 500 rule? At 80 Dec you can get exposures
six times longer than at 0 Dec. Imaging the few near polar galaxies you can get much longer still.
raymo
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