Cheers Bob.. it's definitely useful to hear about your observations on the Offset -- I'm finding that at the default values, the QHY12 I have here falls about 10-12% of full well capacity, especially in the blue. I've come up with revised values of 8/120 that bring it within 5% but have yet to test in the field.
I wish I could hit those low temps you're running at, because I'm wanting to do longer subs than I have in the past but anything longer than 5 mins is peppered with hot pixels, even at -20. The lowest I can get the camera to do is about -24.5, which leaves the cooler running at 95% load.
