Gerardo & Hugh
We recentered these oplevs to make better use of their tracking. And especially HAM2 as it seemed to be way off on one quadrant. Luckily we didn't lose the beams.
First attached is a three day trend showing yesterdays fun with HAM2 and the recentering this morning.
Next is the last eighty minutes, maybe given the wandering, the X-Y plots on the medm should have their window zoomed out some. This seems to be an issue mostly on HAM3 Yaw.
The third plot shows the five hour detail around yesterday morning on HAM2 with the HEPI Cartesian RZ (yaw) RY (pitch) and HP, the horizontal pringle mode. This further shows even though the HEPI RZ has servo'd back to its reference, the OpLev Yaw would disagree. Likewise, even though the HEPI pitch shifted way off for most of the time and then came almost all the way back, the OpLev Pitch doesn't follow that in any reasonable way. Even though these OpLevs have no caibration as I understand, this says alot about system distortion. I've included a feducial from the large shift in the HP calculation but it doesn't appear to correlate to anything in the OpLev response.
The last paragraph about the last plot is confused by the reversed Pitch and Yaw of this OpLev, see 14965.