Quote:
Originally Posted by Paul Haese
... I am considering getting the water cooling unit to get me to -45C from ambient.
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Frankly Paul, I find it all a bit moot.
Delta T's of -58 or -63 are a little meaningless IMHO unless you can also be assured you can get a calibration (dark) frame at exactly the same temperature.
Some manufacturers (no prizes) have CCD chamber temperature stability close to 1/100th of a degree. Others less so, which shows up as post calibration noise.
In my experience with KAF sensors, absolute chip temps of around minus 15 is more than adequate.