Enhanced cooling for climates

rms401

I am at 30d latitude in the USA. From May until October, we have many very hot days and nights. My ASI6200mm, ASI2600mm and ASI1600mm have trouble cooling on hot nights. Last night, I was running at 90% power and only able to get to -5c. The increase in noise is obvious on the subframes. Have you considered enhancing the cooling on these models? Maybe offer models with larger or dual stacked TECs? Is it possible to modify the cooling to make it cool to -50 ambient or better?

Thank you,
Randall

Tech@ZWO

rms401
Thanks for your suggestions.

According to the dark current curve, you will find that there is no significant difference in dark current noise after the temperature is below -5 degrees, which means lower temperature does not bring much improvement in the signal-to-noise ratio.

You can calibrate it via dark and bias, and stack more light frames to improve SNR.