Attached are the weak heating curves from tonight. Ring heater turned on: 09:13:39 UTC (2014/02/04), with a POP18 of about 4050cts Lensing maximum occurs at 11:31 with an error of about +-5min , with a POP18 of about 7850cts I.e. the turn-on to peak-lensing time interval is 2h:28min, or about 8880sec. For later reference, the POP18, 33min into the run was about 4450cts We will leave the heater on today (at 1.5Watt total) to the long-term equilibrium lensing. From that we can establish the time during initial heating which has the same lensing as the long-term equilibrium. This will allow us to simplify setting the power. See also alogs https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=9778 https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=9736 As reference, in alog 9736 we had Start heating 08:09 UTC and 3500 cts PP18 build-up Ideal matching at 08:42 UTC, with 11500cts POP18 build-up. That's 0h33min into the run (1980sec). That was with 20W total. Based on these numbers I would expect a heating power of 1.5