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Hi Colin, After extensive research and experimentation I found that my 1100D
@ 1600 and my 600D @ 800 gave the best results as far as noise was concerned[which as you would know is the biggest problem with uncooled DSLRs]. The noise gets worse as you depart either up or down from those figures, [with my cameras at least] I didn't believe that until I tried for myself.
So I suppose I'll just have to take very large numbers of subs to bring out the fainter stuff.
raymo
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