J. Driggers, J. Kissel, A. Viets

After a ton of work this morning (see LHO aLOGs 48534, 48530, 48499, 48546, and 48512)  
     - we are now in observation with the newly moved calibration line frequencies, 
     - the interferometer is stable, 
     - the time dependent correction factors calculated from them are reasonable,
     - the line uncertainties is low, 
     - the GDS-CALIB_STRAIN channel remains corrected for optical gain, cavity pole change, and TST stage actuation strength (but NOT for PUM, UIM, or any optical spring parameters)
     - the subtraction pipeline has been updated to subtract out these new frequencies.

Attached are some relevant screenshots showing the success.
- 2019-04-16_H1CALCS_CalibrationLineMove_Success_7to100Hz.png shows the actuator calibration lines at low frequency, now at 15.6 Hz (driven by UIM, L1), 16.4 Hz (driven by PUM, L2), 17.1 Hz (driven by PCALY), and 17.6 Hz (driven by TST, L3)
- 2019-04-16_H1CALCS_CalibrationLineMove_Success_300to550Hz.png shows the sensing calibration line, now at 410.3 Hz (driven by PCAL)
- 2019-04-16_H1CALCS_CalibrationLineMove_Success_FinalAnswers.png shows the values of the time-dependent correction factors (note that the spring parameters are still bogus)
- 2019-04-16_H1CALCS_CalibrationLineMove_Success_Uncertainty.png shows the current levels of uncertainty in the calibration lines.

Great work team, and at lightning speed!

Later today, while out of observation mode and the PEM team is working on their injections, we intend to further reduce the amplitude of the lines to better compromise uncertainty and noise impact.