In SharpCap with the ASI1600MM under Thermal Controls are the temp numbers in Celsius or Fahrenheit (C / F) I'm assuming all ZWO cameras are in Celsius ?
I'm thinking in SharpCap the ZWO1600MM camera temp is set to -20C so the camera sensor will be -20C or -4F
I found this on Cloudy Nights it helped.
https://www.cloudynights.com/topic/568676-zwo-1600-mm-c-temperature-confusion/
Thanks
AL Bates