TITLE: 12/18 OWL Shift: 08:00-16:00UTC (00:00-08:00PST), all times posted in UTC
STATE of H1: Observing at ~75 Mpc.
Incoming Operator: Jim
Support: Jim, Jenne
Quick Summary:
The range has been ratty since 8 hours ago. Omicron shows band of glitches around 20 Hz and between 100-200 Hz. I don't see any significance changes in environment from 8 hours ago. I dig through the summary page breifly and found SR3 oplev spectogram looking very nasty started 8 hours ago, but the spectrum doesn't show any misbehave osems. So the cause of these glitches is still unknown.
Shift Activities:
- 11:34 Noticed ETMY timing error. Cleared it while still in Observing.
Nutsinee asked me to have a look-see at SR3. As you can see in the attached plot (1 day trend), the oplev sum is doing something very weird starting a few hours ago, but the optic motion (as seen by both the oplev and the osems) seems totally fine. So, something is likely funny with the SR3 optical lever laser, but since we don't ever use it in-loop, it's not a high priority for fixing right now.
