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I ran my test build last night, Mk II vers. 2.
It took ages to pull the sensor down by about 10* but it had no internal fan and no contact with the camera, just a big cold plate surface.
It managed to maintain the sensor about 5* below previous imaging sessions where I had gotten up to 30*c, so about 24-25* for a nearly 2 hour run with 90 second exposures and virtually no breaks.
Not a great result really for the effort but I may try an internal fan to get cold air circulation and I think I can rig up a sliding contact to the tripod screw plate so when the enclosure is shut it connects it to the cold plate as well.
Simple but might help a bit more.
Turning the camera off\on is a nuisance though and changing the battery is a pain. I make sure the battery is at full charge at the beginning of the night. I am looking into an AC adapter for the camera. Does anyone know if just turning the power off/on is likely to cause any issues rather than using the camera control ?
Mine is the 12706 also. Variously rated at 50 or 60 watts depending on who is selling it. Factory specs are 50 IIRC.
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