martin_h Posted December 12, 2010 Share Posted December 12, 2010 Here is a section of a dark frame taken tonight, magnified 800 xI get these streaks randomly on all frames but not in the same position each time......Are they cosmic ray hits? Or something else?This is a 15 minute dark at -25 C Link to comment Share on other sites More sharing options...
roundycat Posted December 13, 2010 Share Posted December 13, 2010 could be cosmic rays. They will be random in appearance and position. Usually an irregular splodge of a few pixels. The longer the exposure the more you get. Median combine will take care of them.Dennis Link to comment Share on other sites More sharing options...
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