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Yes Dennis, I used the calsky GFS seeing forecast but I found a site Meteoblue which gives more nuanced data on seeing for AU. It uses 2 models plus turbulent layers so I will be giving this a check as it said bad seeing when GFS said good and seemed to be right? You have to take these with some reservation and match it with steady high pressure or before cold fronts etc as well as good old star twinkle I've learnt.
John.
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