Gerardo and I, with Rahul in training, bonded PUM ear S1201472 to the test mass ITM01 S3 flat. (Yes, a PUM ear on a test mass - this was deemed acceptable in times of short test mass ear supply.) The bonding was straight forward and placed with 0.04mm measured error along the beam path axis (0.1mm is the tolerance).
Note this was the first bond in the new lab space. All systems up and working well, thanks to Bubba/Tyler/Chris and the many hours Travis spent to help move everything.
The second ear bonding session is scheduled for next week.
Late entry - ITM01 had the second ear bonded on March 4th, 2020.
A PUM ear was again used. Ear - S1201484
During the bond, there was initially a set of bubbles which we watched migrate out over the course of a few hours. At 2 hours the location and bubble situation (very minimal) were well within tolerance.
The optic will be FirstContact cleaned and stowed in the coming week.