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All this has got me totally confussed. I just treat the the QHY8 as a 16bit DSLR, which it is. That means it can take longer exposures without saturating star colour and since it's cooled, darks are not as important. As for subtracting this bias file from that flat file etc etc , I wouldn't know how to do it, nor does the software I use. I just load everthing into DSS as I was doing with the canon, tell DSS it's a QHY8 and go. I must admit I've only shot a handful of images with it but I've never had a problem either.
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