Re: The Last Trip

From: starlord (starlord_at_despammed.com)
Date: 08/31/04 

Date: Tue, 31 Aug 2004 12:59:44 -0700

While I don't have a fancy building, and my scope is outside 24/7 I had to
figure out a way to deal with heat and not worry about installing fans and
power supplys. My mirror cell is just a tad bigger than the mirror itself,
with it being held in the sono tube via stand offs and bolts so there is a
circle of clear space around the mirror. This allows the mirror to be at the
same temp as the air all the time. The heat that effects any viewing when I
was up at the corner was that coming up off the blacktop of the street
itself.

Todays temp right now is 103F and I'll be walking to the drug store / post
office a bit later. 

-- 
"And for the second time in four million years,  the monolith awoke."
         Arthur C.Clarke 2062:odyssey three
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"Howard Lester" <hlester@mmto.org> wrote in message
news:ch23ek$itl$1@oasis.ccit.arizona.edu...
>
> Hi Bill,
>
> No, I don't differ at all! In the early 80's, when I/we first learned of
our
> relatively exceptional seeing, I commented to our chief engineer that I
bet
> it has a lot to do with the open box design, rather than the usual narrow
> dome slit. In fact, in the mid-80's we opened up the back of the building
> and installed louvers for even more evenly distributed air circulation.
>
> Another 'trick' we learned is wrapping every member of the optics support
> structure with 3M aluminum tape to suppress their nighttime heat
radiation.
>
> Howard
>
>
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