Thanks Andrew, yes often no wind, cold and clear, but heavy dew. I will try with a hair dryer, I was a bit worried about the telescope having to cool down again. Even tonight (28/8, I just got back in from doing jupiter and saturn) seeing was very good but I fogged up again with dew and the camera view goes dark. Might need to get a longer extension cord so the hair dryer reaches outside. Oval BA is just about level with the red spot now, and there is something going on up above the top cloud belt. Jupiter about an hour ago:
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