Quote:
Originally Posted by Shiraz
thanks very much Paul. there have been some good patches of seeing, but the clouds have stuffed it up during the moon free periods - very frustrating. During this session, the half flux radius reported by Nebulosity was under 1 pixel some of the time, which translates roughly to 1.8 arc sec FWHM. The FWHM measured on some of the subs was just under 1.5 arc sec - never seen anything better.
I intend to do some colour.
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My theory is that we are heading into another drought cycle here in SA. I have been watching the rain totals closely for the last 7 years and the satellite moisture readings. Rainfall has been going down for the last two years after the peak of the drought breaking rains. It looks similar to the events of 2007-2008. Seeing has been generally increasing from the last few years too overall with fewer periods of bad seeing occurring. When the moisture level drops in the atmosphere good seeing is generally better. Like I said, it is a theory at this stage but I am happy to get better seeing that I usually get (as good as that is generally).