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Steve,
I finally got mine all assembled today and ran some test darks with the cooler switched on and off. Here's 60 secs without the cooler (29 degC) and 60 secs with the cooler set at 17 degC. I can report the temperature held stable on the DSI readout - not even 1/2 deg swing.
I started having trouble with the image going all the way to the right of the histogram with longer cooled exposures. I thought I'd done some damage to the camera so switched the peltier off and let it warm up and things returned to normal. I now think it was light leakage into the front of the camera around the scopestuff adaptor plate as the camera body cooled down but will have to run some more tests to verify this..
I also installed my desicant holder and this seemed to work ok (no free water droplets inside the camera when I opened it up).
Peter
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