Camera cooler performance - high ambient temperature and humidity - Forums

Topic starter

Feb 12, 2021 · Edited: Feb 13, 2021

Been having problems with getting my ASI183 MM Pro down to -20 degrees when I’m shooting flats the morning after an imaging session. The camera seems to be fine but just won’t quite get to -20 and it’s operating at 100% power.

It’s mid-summer in Oz and the daytime temp at the moment is 25 degrees C plus, often with humidity > 80%. The question is: Does ambient temperature and high humidity affect cooler performance? I suspect the answer is yes, but would be interested in the collective experience.

Thanks in advance

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wsg

Feb 13, 2021

Hi David. Yes, ambient temperature will affect your camera's ability to cool. Most cameras stated maximum cooling temperatures are unattainable in hot climates. A common practice in AP is to set a cooling temperature that is reproducable in all conditions, which is usually not close to most advertised maximum values, but contributes to consistent calibration frames. There is also debate weather extreme sensor cooling is beneficial at all compared to temperatures that are more easily achieved.

Scott

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David Wright

Topic starter

Feb 13, 2021

Thank you @wsg,

I guessed that was likely to be the issue. Looks like -10 might be the setting of choice in future during warmer weather. Thanks for the guidance - much appreciated!

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Gary Imm

Feb 13, 2021

David, Scott is spot on with his comments. I image in south Texas. In the summer, the nights are 90+% humidity and 30+ degrees C. With the 183, I image at -20 in the winter, -12 in the summer, and -15 in the fall and spring. It wouldn't be much different if I just imaged at -12 the whole year round.

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David Wright

Topic starter

Feb 13, 2021

Thank you @Gary Imm, appreciate your comment as well! Good to have collective input!