Looking at last nights run with Analyzer I saw on the FWHM graph a couple of bad frames. So scrolled down on the log and found the bad red frame with a fwhm of 3.7 at 04:28:11. The culprit is focus, as if you scroll up to 04:27:44 you see the autofocus result with a hFD of 10.88. I am not sure why that was not corrected back to the previous focus value with a "autofocus failed" via FM as a Max HFD is specified at 5 on the FocusMax Features tab, just to catch this sort of error?
BTW Analyzer rock
(Not sure if this does not belong in the Focus Max section?)