J. Kissel

Having lost lock in the same "within a few seconds" timescale from doing nothing but rotate the rotation stage and adjust the "POWER SCALE" -- i.e. take the LASER_PWR -- guardian from POWER_2W to POWER_3W, I'm suspecting PDs falling off of useable area. We not the that IMC global position has moved quite a bit (at the ~10 urad level) from last week -- and since then we've had two major crashes (dolphin crash on Monday, and ) -- Here's a trend of the ISS QPDs. There's a major change on 2019-07-14 ~11:53 UTC (Sunday Jul 14 2019 04:53:00 PDT), but nothing recently of note.

Attached is a trend from June 19 2019 to now (prior to June 19th, we're stable at the Jun 19th value since the start of O3).