Magnus Danielson wrote:
Bruce,
Bruce Griffiths wrote:
At your location, at present, it wouldnt be a significant problem as
long as the basement was unheated.
Depends. But having 3 dm snow on the ground helps to keep the ground
around the house warmer, as it will insulate against the cold of the
open sky. -12.8 C is the lowest so far. Since winter is reoccuring, we
build the houses accordingly.
Also good ventilation would help, together with a thin layer of oil
on top of the mercury.
Mmm. Yes, didn't think about covering the baths with fluids.
The biggest obstacle would be the cost of the Mercury.
Actually, it could be an obstcle just obtaining in those amounts it
here within EC, so it would involve some form of approval of some form
of excempt since it is mercury is a ROS element.
Cheers,
Magnus
Guidline price is around $US600/flask (1 flask = 34.5kg).
Thus cost for 145 ton would be around $US2.5million.
The Canadians have a liquid mercury mirror telescope about 6m in diameter.
Whilst this doesn't use 145 tons of mercury the surface area would be of
the same order.
Bruce
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