LgswUnitDx test w/ PyramidWfs

We put back the systems as it was yesterday, but we find that the pupils are quite shifted (approx 20-30 motor steps).

We close the loop anyhow and we notice that the system oscillates with HO gains > 0.3.

In the meanwhile we optimize the pupil motors position:

TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Notes
20161206_171946 0.5,0.5,0.45 T 73.8579 52.8941 20161204_194600 -1 T F PM= [420, 525], [275, 375], [420, 335]
20161206_173225 0.5,0.5,0.5 T 76.0456 96.3278 20161204_194600 -1 T F PM= [422, 525], [281, 375], [417, 335]
20161206_173430 0.5,0.5,0.5 T 81.689 48.7748 20161204_194600 -1 T F PM= [426, 525], [285, 375], [413, 335]
20161206_173713 0.5,0.5,0.5 T 55.5259 48.4453 20161204_194600 -1 T F
20161206_173838 0.5,0.5,0.5 T 58.3581 44.9476 20161204_194600 -1 T F PM= [430, 525], [289, 375], [409, 335]
20161206_171946-20161206_173838_modalplot.png

After having set the pupil motors in the proper position minimizing the oscillation we close w/ disturb, using Pyramid WFS for TT:

TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Notes
20161206_180427 1,0.5,0.5 T 57.8892 51.9617 20161204_194600 -1 T F
20161206_180449 1,0.5,0.5 T 59.5656 51.592 20161204_194600 -1 T F
20161206_180518 1,0.5,0.5 T 53.6745 51.5681 20161204_194600 -1 T F
20161206_180832 1,0.5,0.5 T 44.5001 58.9482 20161204_194600 -1 T F
20161206_180858 1,0.5,0.5 T 43.6473 59.8556 20161204_194600 -1 T F
20161206_180923 1,0.5,0.5 T 47.7797 62.9372 20161204_194600 -1 T F
20161206_181125 1,0.5,0.5 T 40.7559 78.0053 20161204_194600 -1 T F skip frame
20161206_181153 1,0.5,0.5 T 46.9219 118.45 20161204_194600 -1 T F
20161206_181247 1,0.5,0.5 F 77.2585 226.555 20161204_194600 -1 T F
20161206_181500 1,0.5,0.5 T 40.5921 70.4997 20161204_194600 -1 T F
20161206_181518 1,0.5,0.5 T 37.3195 68.9919 20161204_194600 -1 T F
20161206_181534 1,0.5,0.5 T 41.0466 72.5806 20161204_194600 -1 T F
20161206_181500-20161206_181534_modalplot.png

DX LGS jitter to NGS stage calibration

We acquire from scratch: 20161206_183200. Calibrated with LUCI rotator at 210 deg.

TN: 20161206_194737

Then we close the AO loop and spin the LUCI rotator at 0.2 deg/s. TT gain = 0.5

TN @ 170 deg: 20161206_203747

TN @ 160 deg: - the loop diverges...

We find that the sign on the NgsStageJitter procedure (determineOffsetToBeGive) is wrong:
  • SX angle sign must be -1
  • DX angle sign must be +1

NGS stage to PatCam

Then we try to calibrate the NGS stage to patcams. We do it by hand moving stages while in CL on the Pyr. We start from center position 0 where stages are at [-72.65; -53.81] mm.

  • Pos 1: stages @ [-68.65; -53.81] mm, TN: 20161206_205743
  • Pos 2: stages @ [-72.65; -49.81] mm, TN: 20161206_210322
  • Pos 3: stages @ [-76.65; -53.81] mm, TN: 20161206_210925
  • Pos 4: stages @ [-72.65; -57.81] mm, TN: 20161206_211219
Topic revision: r2 - 08 Dec 2016, MarcoBonaglia
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