[ATM] Electronics help needed - temperature control

[Gil McFarlane <gilboastro@yahoo.com>]

$2500?  My plan is much, much more modest. I want to
bring the mirror and mirror mount to what I expect to
be ambient
temp. for that night's observing - like an air
conditioned dome. I then open it up, let fly. I don't
expect to chase the temperature after opening - I just
want to have the mirror at a stable low temp at the
beginning of observing. Will that matter much? Don't
know. Will it be fun to try? Yup.

I'm thinking of using the lower section of my large
old Coleman cooler to hold my icy water and a U shaped
pipe (save room for soda), then have a closed air
circuit blowing this cool air around my mirror and its
mount. Desiccant needed to dry the air out. I hope to
use a lot of expandable foam for insulation (I love
the stuff - particularly the German foam).  If the
whole thing costs more than $100 then I'll have failed
my Scottish heritage.

- Gil

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