We improved the active tip-tilt (TT) controllers such that they now have filter banks at the PIT/YAW inputs, and at the coil outputs:
This allowed us to do a couple of things:
These are all big improvements. The TT MEDM screens were appropriately updated.
We had to rebuild/restart c1ass, which reset the TT pointing. We recorded all the values before hand and were able to recover the pointing easily. Interestingly, there did appear to be hysteresis in pitch, which is maybe not entirely unexpected, but still worth nothing.