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Thanks for this further information Steve. It certainly is more of a Cookbook approach and more effective in achieving low temperatures for the CCD chip. I should imagine that the gradual cooling technique would also allow you to reach low temperatures a la Cookbook. In my approach, I only milled of the cooling fins off about half way so that the 40mm Peltier was centred directly over the internal ccd finger. However, this did involve butchery of the DSI2 rear, whereas with your method I guess you could put your DSI2 back to original if necessary. This has been a very interesting thread and I would be interested in reports of your further experiments/results in due course.
Cheers Peter
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