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Anonymous
If you can keep the sensor cool and the battery warm you're perfect. Cold sensors have less noise than warm ones (this is why astronomers cool their CCDs with liquid nitrogen), but battery chemistry is less energetic at lower temperatures.
Condensation is a problem but a fairly minor one as long as it doesn't get on the sensor. Best solution with a DSLR is to put the whole thing in a ziploc bag outside, then leave it in until it warms up to room temperature. With PnS you don't have to worry.
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