Quote:
Originally Posted by Shiraz
Hi Lee. I get a median of about 2.2 arcsec, with some nights up to about 4 (eg last night). Have occasionally had seeing down to ~1.5 arcsec.
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That is vastly different from what I got last night and demonstrates how different seeing can be from region to region. While you got 4 last night I was getting 1.86. Did you have north westerlies last night Ray? I did not have any wind until about 6 am. Air stream and cloud flow was moving from that direction. As I understand it seeing is good at your site when you get south easterlies, am I right in thinking that. That would mean a high pressure must be located in the centre of the Bight for you to get 1.5" seeing. Is this right? I thought the seeing whilst pretty good was influenced by the air stream coming down from the north.