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Marc
To answer you questions.
Normally my camera is in atmosphere with moisture removed by silica gel. The camera is normally sealed, but to let moisture in I undid the small rubber plug on the side and let it equilibrate with the external atmosphere which will have moisture in it ie not dry. Then I switched on the camera and dew formed on chip and small amount on filter as the camera cooled. Then plugged in heating strip and you could see the ice disappearing from the chip face and filter and being trapped on the cold finger in the back.
The heating element goes in front of camera between the camera body and filter and is just insurance in case there is a little moisture that can condense on the filter or chip.
Simple and it works.
12 volts supplied from the QHY8 power supply by a line splitter that Theo supplies. Very neat.
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