Tom McDonald wrote:

Eric wrote:

I am just beginning to plan o utanobservatoryatmyhouse.
I will remove a closet that is unused, put a doorway in and that will
go to a short set of steps up to a platform at the rooftop.
I was wondering if anyone had plans or recommendations for a small
observation platform where i could place a 12 or 14" reflector type
telescope and leave it there knowing it will be protected from
wind/rain and sometimes snow (This means a opening/closing roof)
Thanks
Eric


Eric,

My first thought is, how well insulated is you home? If there
is not enough insulation in the top floor of your home, and/or
if there is inadequate ventilation of the attic, you will
probably find yourself looking through shaky air. In warm
weather, the question becomes how quickly does your roofing
material cool off after sunset. In either case, ISTM that you
will have to address thermal radiation from your house as you
plan your observatory.

good point, i hadnt thought about that. Thanks.