Jennie W, Sheila

Since our range has been decreasing over the last week and the OMC QPD offsets did not definitely give us a clear gain long term in kappa C, we have reverted the change we did on Monday.

We might want to improve these offsets again once we sort out any other problems that are making larger impacts on our range currently.

See the below ndscope for how this affected the range and optical gain in the short term - this picture is slightly confusing as the calibration was being updated so kappa C will have been reset at the some point before or during our measurements.

The other two attached images show the QPD offsets being accepted in OBSERVE and SAFE snap files.