The TCS CO2 laser unlocked at ITMX at 09/22 23:40UTC and took us out of Observing for a minute and a half until it could relock itself. We went back into Observing at 23:42UTC. (Didn't contact Dave to clear the DAQ CRC errors since TCS locked back up so quickly)

A couple weeks ago I had noted(72653) that the TCS ITMX CO2 laser had been losing lock consistantly every ~2.8 days, leading to a steady decline in the laser head power (72627).

On 09/14 at 22:13UTC Camilla lowered the H1:TCS-ITMX_CO2_CHILLER_SET_POINT_OFFSET by 0.3degreesC(72887). In the week since then, it looks like (at least based on the 3 TCSX CO2 laser unlocks we've had since then) the average amount of time between unlocks has gone up slightly from every ~2.8ish days to every ~3.4 (attachment1 - T1 is when the offset was changed). Granted there's only two data points currently, but so far at least it looks like we've gained a bit of extra time between unlocks.

Unfortunately though the laser head power looks to still be decreasing at around a similar rate every time as compared to before the offset change.