I need my obs floor about 8' off the ground to clear obstructions and have a really good view of the sky. The best place, in terms of geography, is in my attic with the dome sticking up above the roof. Attic has 20" of blown fiberglass but there is still heat loss in the winter, even though much less than typical.
The only potential issue is heat plume coming off the roof of the house in winter. Does anyone have a dome on their roof and have you had heat plume issues?