I log lots of information about my astrophotography system for every photo taken. I do this so I can go back at some later date and study what happened and learn what works and what doesn’t work. I have been using my QHY294C camera for 2 years now. In 2020 I used a cooler setpoint of 0 Celsius. I had no idea what to expect from the cooler and I certainly didn’t want to wreck it by driving it too hard. The QHYCCD folks talk about the possibility of a…