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Old 18-05-2016, 08:14 PM
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rally is offline
Join Date: Sep 2007
Location: Australia
Posts: 896
What was the frequency and range of the seeing changes that night ?

Next time try this with a DIMM (or a camera with dual apertures and appropriate software - a link exists somewhere on the net !) to measure the instantaneous FWHM and plot that.

I think you'll find there will be a correlation between the length of sub, period and range of seeing changes and the FWHM captured up to a point where Id expect it would plateau due to averaging.
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