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Old 16-04-2009, 07:19 PM
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bojan
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Join Date: Jul 2006
Location: Mt Waverley, VIC
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Increasing the exposure time will help only if F number is bigger.. because LP IS a signal (as stated by Stuart). And it will help ONLY with stars (point sources of light).
So for DS's, only options are filters and going out to dark sites.
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