This is related to a recent thread about locating a pier.
Not quite ready to do this yet (summer maybe) but I essentially have my tripod in a fixed spot under a Telegizmo 365. My issue with the current location is that while I have a view to the south, it is broken up by trees so it consists of gap/trees/gap/trees with each gap being about 2h max. I have a much longer unobstructed view to the north BUT that is over my house. I know that you shouldn't image over the house because of the heat currents but I am wondering... how high above the house before this effect is immaterial considering my seeing is never even down to 2? If I pick a minimum alt of 40 degrees, that would be 20-30 ft above my house.
Thanks and cheers!