With a single cavity locked, tried to estimate WI mirror HR surface elastic deformations by measuring power into higher modes (TEM02) without and with TCS on.

For the measurements performed without TCS, R. Day is analizing the data.

In the meantime, F. Carbognani was working on the flip mirror remote control.
Maurizio was sent into central building to check by eye the position of the flip mirror, since there is no sensor to check its position. The flipper was DOWN, so TCS beam is ON.

Tried to repeat the measurement with TCS on, increased the TCS power up to 1.6 W, without any visible effect on any IFO channel.
Alessio went to central building, the flip mirror was UP! Probably it went up during some further check of the flip mirror remote control. No measurement with TCS on has been performed.