Hi Peter,
I have the qhy10 and when cooling down, the default temp can vary because the default is not governing the actual temperature, but governed/controlled by the power level, default at 50% power, and is safe for start up & takes the camera down approx 20degs below ambient, I leave it there for a few minutes, whilst booting the lappy ect, then bump the power to 70% for another 5mins whilst focus & framing etc & maybe 80% during summer. Then tweek the power to set an appropriate chip temp, -20, -25, or -30 depend seasons !
Warming up after session, as soon as last frame taken. back power level down by 20% for 5 mins, then another 20% taking it down to between 30-40% for 5 mins, Last step, all safe to turn off
