Danny S, Gary T, Matt H

We began the closeout of the X-end station today. The Quad was locked down and the baffle swung back and kept in place using the wedge. Using the green light the number of particulates on the HR surface was estimated to be in the teens per square inch. We noticed that there was already a 1" monitor optic and a 4" wafer in place. We dont know if these should of been removed straight after the vent, or have been placed there to monitor activity during the vent. But we have left them be for now

Gerado also asked us to inspect the 4 viewports in that chamber if we could whilst inside the chamber. There is a potential issue with the middle viewport on the eastern door (looks like imprint of peek mesh I am told)...but Danny believes its on the outside, so should look at it more indepth. The others look fine

A new wipe was put on the cone and the cone put on the HR surface of the Quad. With the cone butted up against the optic there was plenty of room to fit between the cone and the baffle. Danny when he sprayed used the "shroud" technique that we use at LLO to stop any potential backspray of FC (you can see it in one of the pics). He reported not seeing any of the spiderwebbing effects we saw in the corner station FCing. The FC mixture for spraying was the standard 1:1.

After allowing FC to dry an outer crust was painted on the HR surface of the Test mass optic. Calum informed me that we could paint the ERM surface and so we put 2 layers (and outer crust) on the ERM surface also. Peek tabs painted onto both optics

Next up...a good deep clean of the chamber

Pics are of Gary and Danny during various steps of FC process (I was outside support today :-))