Thank you for your comments!
It can be very cold there, thats true. 5250 feet above sea level.
Light pollution is very low. It is possible to see 7mag stars!
Short time before moon rising:
http://www.prokyon.startime.at/Bilde...ils15Nov08.jpg
and here you can see light spots on the fog from the villages under:
http://www.prokyon.startime.at/Bilde...ndl_4Jan09.jpg