George, very impressive results. How much does the finished unit weigh? Any problems with dew/frost buildup. Marc

My setup is luquid cooled and it cost me 250 grams more but the picture that I post is second version for my friend and its way better. The new version is up to 20 degree bellow ambient but consule low power (36W) and it is only 200grams more including controller for the peltier element. I used heat pipe aluminium cooler as it only 136 grams or something like that. Also the mode include 1mm thick cooper plate and 30x30mm peltier element. Controller is pulse wight modulator for best power consumption (same principal like Kendrik heater controller).

Dew is easy as I cool only the ccd and I close the air chamber with Astronomik clear glass clip system for EOS.