Attached the intensity images as seen by the phase camera for the DAS test at 17 W input power.

1. figure shows the overlap between 6 MHz USB and carrier on B4. In shaded blue the time when the DAS was on is indicated, the DAS power is noted in the legend as "inner ring/outer ring" in mW. In black vertical lines give the gpstimes of the images described below. The sudden increase after the black line might be due to a power drop of the ring heaters earlier, see image attached in [40096]. The evolution of the overlap seems not to follow the evolution of the gain for this data set. The overlap increases in both stretches were the DAS is turned on while the gain decreases in the first stretch and is stable in the second stretch [40096].

2. figure shows the images on B4, not in chronological order but for increasing power. In particular the 6 MHz USB sideband seems to improve in shape with the DAS on.

3. figure shows the images on B1p, not in chronological order but for increasing power. Here essentially no changes are observed in any of the fields.

4. figure shows the overlaps on B4 for according data stretch. Effect on upper sidebands is more pronounced than on lower sidebands (in agreement with the 2. figure) while the 6 MHz lower sideband seems very stable. The green band gives a typical standard deviation (roughly 0.01).