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Mediocre at best from where I was Stefan.
I thought that maybe I was getting some temperature gradients from the mirror to ambient, but it had been cooling for a few hours before I started imaging - I don't have a temperature readout, but it seemed quite stable (ie fast, consistent seeing with no obvious heat plumes in the out of focus image).
This didn't change over the course of about 1-1/5 hours.
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