Once H1 relocked to NLN this evening, I noticed it didn't look like FDS was being injected, and then I saw a notification on the SQZ_OPO_LR Guardian node saying, "too much pump light into fiber? Adjust the half wave plate." Tony pointed me to alog78696 where he needed to make a similar adjustment. I attempted to follow that procedure to lower the green SHG launch power below 35 (threshold in Guardian) from where it was around 36.6 using the half-wave plate, but I was unsuccessful. Moving the 'SQZ SHG FIBR HWP/QWP' picomotor (motor 3) made the launch power signal shake as the wave plate moved, but the level did not change. I called Naoki for assistance and he corrected me, saying that I should have been moving the half-wave plate before the launch and rejected PDs instead of the one after them; making the correct motor be 'SQZ Laser FIBR HWP/SHG GR power' (motor 2). He made the adjustments necessary to bring the launch power down and rejected power up, then used Guardian to inject squeezing without issue.

H1 started observing at 00:18 UTC.