Thought you might like to see this - it's a temp graph I took last year, and it shows how my mirror (red line) never catches up to the ambient temperature (purple). The tube temp is also shown in green.
The mirror was cooled by two computer fans going flat-out, and it still wasn't enough. After I saw this graph I knew that a peltier was on the drawing board.
The graph has a nasty spike caused when I went out and accidentally put my hand on the sensor, but I couldnt be bothered editing it out :-)
Bird
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