cheryl.vorvick@LIGO.ORG - posted 16:40, Tuesday 28 August 2018 (43707)
sudden alignemnt change of MC2 - MC2 yaw follows changes seen on the PSL
Around 18:40UTC, on 8/27, MC2 starts to move in pitch, and WFS tries to hold it in place.
The PZT and the ISS QPD show some changes, most notable the PZT drift changes direction, for both pit and yaw.
My GigE cameras show drift, and some "faster" changes, in X ands Y, but more notable are the SUM plots, though it starts earlier, around 16:30UTC.
Other DC channels see the changes too.
Last plot is just MC2 pitch and yaw.
Images attached to this report
