Quote:
Originally Posted by Tandum
I didn't know where to put this one so move it if you want admins.
Can anyone explain dew point for me?
Looking at bom tonight it says temp is 19C, RH is 86% and dewpoint is 16C.
At what temp will dew form on a lens, for example? Or what temp should the lens be to stop dew forming?
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Roughly speaking dew point is the temperature at which relative humidity would reach 100% with the current value of absolute humidity.
One or two degrees above dew point should be enough to keep your lenses dew free. I think I'm going to have to get one of Gama's heaters for the CCD because the filters can get well below dew point.