Finally ringdown at IMC conquered and oopsie that came out so clean!

The finesse of the cavity from the current ringdown measurement, F= 453, differs from the measurements made in the document dated 10/1/02 on dcc...not sure if things have changed since then.

While I thought that the bumps observed at the end of the ringdown might be because of the cavity trying to lock itself, Jan commented that they have always existed in these measurements and their source is not known yet.