Here is the second test, with turned on cooling
The ambient temperature was again 22C. The sensor was cooled for 30min to temperature 4.3C. Same exposure parameters were used.
T-St. | T-End | Exif
4.3C | 6.8C | 18C
6.2C | 7.4C | 20C
6.8C | 7.7C | 22C
7.1C | 7.9C | 24C
7.3C | 8.0C | 24C
7.4C | 8.1C | 24C
7.4C | 8.1C | 24C
7.4C | 8.1C | 24C
7.4C | 8.1C | 24C
7.5C | 8.1C | 24C
7.5C | 8.1C | 24C
7.5C | 8.1C | 24C
7.5C | 8.1C | 24C
7.5C | 8.1C | 24C
And a link to is a noise comparison in the last images from both test :
http://www.ideiki.com/astro/astroimages/noise.png