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An interesting experiment has occurred to me. If we took two similar scopes side-by-side, and cooled the mirror of one to ambient and let the other equilibrate on it's own, took video through each, we'd be able to demonstrate how much the boundary layer effect contributed to the image. I have a pair of suitable cameras - now where's that chap with the 20" binoculars..?.
Cheers,
Andrew.
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