Last night in Melbourne was hot and the minimum temperature was 23C at about 0300HR. The lowest temperature the fridge could get to was -3C at the Peltier cold plate so I set the temperature at -1.5C. This actually puts the camera in an environment of 1.7C and obviously the sensor is a few degrees warmer than this.
Collected some data of the Dark Doodad. Canon 5DH, Canon 300mm F2.8 at f/2.8. Hutech LPR filter. I used the 1250mm MAK to guide the EQ6 at the same sort of accuracy as I use for the SN10.
Details of exposures. 10x( 30s,1min,2min,4min ) at 800ISO. From the different exposure sets produced a tone mapped image with EasyHDR.
Large Image here
http://members.optusnet.com.au/~avandonk1/DDoodad.jpg
Bert