Following up from 1929, and to make a fair comparison between HAM457 ISI performance, I turned on the ellip1.5-3 filter that rolls off CPS noise in the low pass blend filter of HAM7 ISI in the Y dof (with Jim's permission). This is so the blends match in (at least) the Y-RX dofs for those ISIs and so we can show the improvement of the fine CPS when projecting the ISI motion to the suspoint.

Currently, as seen in the attached pdf, FC1 suspoint motion (p2) is dominated by the Y dof, and could be reduced down to the Rx dof. The ellip filter that Jim is using for other chambers/dofs should help.