I've been using my ASI6200mm for a year with no problems. I am set up in a permanent observatory with temperature and humidity held constant. When I open the roof, I allow time for the telescope to equilibrate with the external weather. This time of year it is warm and very humid. The camera is set to cool to -10 and I turn on the anti-dew heater. For about the first 20 minutes, I see water droplets on the images which eventually disappear. Why is this happening and how can I fix/prevent it?
