[ZeroID (Brent)]

Yeah, it's a big one. Trouble is air to heat sink transfer is pretty pathetic. There is a fan inside but the heat sink being small isn't shifting enough BTU's to be really useful but it was the only one that would fit. Really needs a deeper enclosure, 100mm or more to get a decent sink inside.
Gary's enclosure is plastic, already an insulator, then he has filled it with expanding foam and he has a big enough heat sink inside to be reasonably effective in collecting the internal heat allowing it to be shifted by the TEC to the outside radiator. I'd be using a plastic enclosure rather than metal. His has good seals as well.

My problem is being unable to collect enough BTU's to really make use of the big outside sink. When it was strapped onto the AS! 120 at 12volts you could really feel the warmth as it was cooling the whole camera body and a bit of the scope. Much more efficient. I might look at trying to pull it down with a sink attached to the camera base to get some metal to metal contact. Back to the drawing board.