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26-09-2015, 05:08 PM
Shiraz
(Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
Posts: 4,918
maybe a silly question, but assume that you measured SNR on the unstretched data?
with your system, the turnover point on Peter's curves will be at about 5 minute lum subs in reasonably dark sky. For RGB, about 10 minutes.
Shiraz
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