Strange focuser movements while events rotated

@AstroScience wrote:

Hi Ken and Jared,
this last sequence from last night, there is some unpredictable focuser movements that I can't understand which happens on all filters. On first image you can see focuser position is stable at 7237, then suddently it jumps to 7341 . After that auto focuse requirements have met, performed and adjusted to 7200 and continues. Second image shows exactly the same, constant 7243 position, jumps to 7325 then AF routine and it got adjusted to 7237 and continues. This happens on all three RGB filters that were running with rotating events.
Interestingly, the sudden reported focus position larger by almost 100 step, although calculated HFR stays close to previous and next frames.
Here is the log: https://www.dropbox.com/pri/get/SGP/sg_logfile_20170427195602.txt?_subject_uid=41889731&w=AADbmVKZFwg9q8j8PBXd4Rzv_5-SMXnaRWzqRa8tD5dAHg

Thank you.

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