Hi, Has anyone experienced issues with condensation and then ice forming on the sensor? All my lights and flats (LRGB and Ha) show the same "crystalline" shadows at -30C; as the sensor warms the crystals form droplets. , hence my guess that it's water vapour. The camera has a new desiccant plug installed. I have taken the filter wheel off and have the camera body exposed in a sealed box (the carry case it was delivered in) with a massive bag of dehydrated silica gel in the hope that this will dry it out BUT does anyone know how this happens and more importantly how to prevent it happening in the future. I have a QSI 6120 that I'm reverting to until this is solved as I've wasted multiple nights in frustration. The QSI 6120 never had such issues or I'd suspect my technique, though that could clearly still be a problem. I've taken frames with the same optical train substituting the 6120 and there are no crsyalline shadows so it's narrowed down to the Aluma; the Aluma filter wheels are clean, I checked, as is the cover glass to the Aluma sensor, also cleaned and checked.