Quote:
Originally Posted by Poita
I used to own that exact scope, it took *hours* to cool down, so it could be tube currents. But yeah, rooftops don't help.
How long had it been outside?
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Hi Peter,
It had been outside for about 2.5 hours by the time I took those shots - I put it out at sunset - but it was summer in SE Qld, around 8.30 - 9pm, so rapidly changing conditions. 2 hours or so has been alright for visual so far, but maybe it needs more for good photography.
My roof is objectionably hot - gets up to near 50 deg C. on a hot sunny day - and holds the heat for many hours. I've been looking at some sort of active cooling for the roof space (e.g. fans) as whirly birds are next to useless (can't move anywhere near enough air).