BCU SX debugging

15:00: we start to check the behaviour of the SX BCU. We notice that the main issue is when the Pyramid slopes are enabled. On DX we measure slopes between +/-1, while on SX they reach 60. Probably due to low light values.

When we close on SX we get duplicated slopes on ARGOS BCU.

  • Setting Pyramid to BIN2 the frame counter gets weird numbers (order of 10^6) while working with BIN4 the framecounter is 0.

We try a direct loop between FLAO and AdSec through fiber splitter. Optical loop data is decimated by 1.

Then we try to disconnect one of the 2 outputs of the fiber splitter, going directly to the AdSec. This seems to help: we see anymore the duplicated slopes and the ARGOS BCU stays alive.

SDSS J13432.85+415503

23:00: We point to Nomad 279645, ~MAG14, we setup for Pyramid.

23:38: we close the first loop but we fail,
TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Plot
20160519_064139 1,0.35,0.2 T 112.363 158.114 20151212_233600 1.00424 T F 20160519_064139-20160519_064459_modalplot.png
20160519_064156 1.5,0.35,0.2 T 115.04 134.16 20151212_233600 0.987508 T F
20160519_064216 1.5,0.35,0.2 T 119.329 146.416 20151212_233600 0.963641 T F
20160519_064339 1.5,0.4,0.3 T 127.667 155.004 20151212_233600 0.982025 T F
20160519_064435 1.5,0.4,0.3 T 136.214 150.434 20151212_233600 1.03013 T F
20160519_064459 1.5,0.3,0.2 T 143.405 136.1 20151212_233600 1.07848 T F
Then we have to go back to Zentih, we have condensation on LUCI1 entrance window.

00:00: back on sky.
TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Notes
20160519_070531 1.5,0.3,0.2 T 130.165 148.358 20151212_233600 1.1018 T F 20160519_070531-20160519_071459_modalplot.png
20160519_070554 1.5,0.3,0.2 T 124.371 173.793 20151212_233600 1.14477 T F
20160519_070823 1.5,0.3,0.2 F nan 433.057 20151212_233600 0.956407 F F
20160519_071435 1.5,0.3,0.2 T 132.809 115.205 20151212_233600 0.954252 T F
20160519_071459 1.5,0.3,0.2 T 146.157 122.195 20151212_233600 1.02127 T F
20160519_071516 1.5,0.3,0.2 T 163.961 137.915 20151212_233600 1.13446 T F

Probably 1.5 on TT is too high, we try to decrease the TT gain:
TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Notes
20160519_071703 1.25,0.3,0.2 T 122.162 109.754 20151212_233600 1.01598 T F 20160519_071703-20160519_071914_modalplot.png
20160519_071749 1.25,0.3,0.2 T 150.341 149.051 20151212_233600 0.98152 T F
20160519_071812 1,0.3,0.2 T 140.654 129.079 20151212_233600 0.954757 T F
20160519_071841 1,0.3,0.2 T 155.008 146.721 20151212_233600 0.951805 T F
20160519_071900 0.8,0.3,0.2 T 118.908 129.922 20151212_233600 0.901626 T F
20160519_071914 0.8,0.3,0.2 T 142.427 128.268 20151212_233600 0.877276 T F
Shell RIPs when we open to send a new preset, same target but we put mask in LUCI1.

TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Plot
20160519_072817 0.8,0.3,0.2 T 155.99 122.377 20151212_233600 0.917698 T F 20160519_072817-20160519_073645_modalplot.png
20160519_073308 0.8,0.3,0.2 T 284.233 565.517 20151212_233600 0.922307 F F
20160519_073612 0.8,0.3,0.2 T 177.864 158.835 20151212_233600 0.616426 T F
20160519_073645 0.8,0.3,0.2 T 174.884 134.61 20151212_233600 0.744118 T F
20160519_074018 0,0.3,0.2 T 282.213 254.243 20151212_233600 -1 T F 20160519_074035-20160519_074523_modalplot.png
20160519_074035 0.8,0.3,0.2 T 158.711 92.997 20151212_233600 -1 T F
20160519_074142 0.8,0.3,0.2 T 151.904 97.6972 20151212_233600 -1 T F
20160519_074252 0.8,0.3,0.2 T 169.061 83.25 20151212_233600 -1 T F
20160519_074336 0.8,0.3,0.2 T 164.103 97.7256 20151212_233600 -1 T F
20160519_074523 0.8,0.03,0.02 T 153.098 105.703 20151212_233600 -1 T F
20160519_074722 0.8,0.3,0.2 T 149.859 115.265 20151212_233600 -1 T F 20160519_074722-20160519_075444_modalplot.png
20160519_074920 0.8,0.3,0.2 T 166.457 115.041 20151212_233600 -1 T F
20160519_075319 0.8,0.3,0.2 T 155.718 111.59 20151212_233600 -1 T F
20160519_075426 0.8,0.4,0.3 T 128.843 127.497 20151212_233600 -1 T F
20160519_075444 0.8,0.4,0.3 T 137.311 110.866 20151212_233600 -1 T F
20160519_075530 0.8,0.35,0.25 T 124.887 125.01 20151212_233600 -1 T F 20160519_075530-20160519_080909_modalplot.png
20160519_075545 0.8,0.35,0.25 T 147.858 112.232 20151212_233600 -1 T F
20160519_075559 0.8,0.35,0.25 T 146.76 140.618 20151212_233600 -1 T F
20160519_075748 0.8,0.3,0.2 T 145.822 129.365 20151212_233600 -1 T F
20160519_075837 0.8,0.3,0.2 T 141.991 151.541 20151212_233600 -1 T F
20160519_075934 0.8,0.3,0.2 T 164.261 123.504 20151212_233600 -1 T F
20160519_080909 0.8,0.3,0.2 T 136.99 121.366 20151212_233600 -1 T F
20160519_081650 1,0.3,0.2 T 136.802 125.239 20151212_233600 -1 T F 20160519_081650-20160519_082021_modalplot.png
20160519_081714 1,0.3,0.2 T 135.354 150.108 20151212_233600 -1 T F
20160519_081803 1,0.3,0.2 T 145.652 123.677 20151212_233600 -1 T F
20160519_082021 1,0.3,0.2 T 135.2 137.979 20151212_233600 -1 T F
Same target, new pointing, we try binocular. We fail...

1:50: we must close, humidity >95%...

SDSS J1723+3411

3:00: back on-sky. Start too dim, sky getting bright. We fail...

SDSS J1958+5950

3.50: residual of binocular collimation prevent us to find the guide star... we try to clear out previous collimation and start from scratch...

TN AO Gain AO CL TT Res. WF [nm rms] HO Res. WF [nm rms] AO rec DIMM ["] JCL PCL Plot
20160519_112847 0, 0, 0 T 853.486 172.397 20160312_032600 -1 T F 20160519_081650-20160519_082021_modalplot.png
20160519_112918 0.3,0.3,0.2 T 783.465 108.786 20160312_032600 -1 T F
20160519_112946 0.3,0.3,0.2 T 774.09 107.799 20160312_032600 -1 T F
20160519_113004 0.5,0.3,0.2 T 756.704 115.988 20160312_032600 -1 T F
20160519_113322 0.5,0.3,0.2 T 582.781 122.747 20160312_032600 -1 T F
20160519_113351 0.5,0.3,0.2 T 564.068 117.561 20160312_032600 -1 T F
20160519_113437 0.3,0.3,0.2 T 517.052 117.943 20160312_032600 -1 T F
20160519_113451 0.3,0.3,0.2 T 496.131 121.846 20160312_032600 -1 T F
Topic revision: r3 - 20 May 2016, MarcoBonaglia
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