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UT 20121022 AO#1

Observer:JCGuerra (LBTO), A.Puglisi remote(INAF)
Telescope Operator: David G.(LBTO)
Additional AO Support: JCGuerra (LBTO)
Telescope Support: Michael.K (LBTO)
Instrument Support: John M (LBTO)

Summary

  • Retro On.

  • Startup of the DX size.

  • Telescope setup to work with the RR.

  • Alfio on line.

  • Test of the optimized AO system at bin 1. Strehl of about 65% in H, good for daytime conditions.

  • Wobble check, it has showed a displacement of: 5 pixels in x.

  • Installation, compiling and test of the new software on DX. Strehl of about 63% in H, good for daytime conditions.

  • Handover 3:40

Details

Start 09:00

  • Installation of the RR. Not problems

  • AO system configure to close the loop at bin 1. The system is optimized and data are taken, the table below shows the results:

TrackNo RefStar Mag El Wind DIMM/OL Rec bin #mod freq gain mod nph AntiDrift SR filter exp #frames disturb SN notes
20121023_173902 ??? 6.7 90 12 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1194 ON 62.4 H 30 300 ON NO - Pupils mismatch - Warning: Selected IRTC dark +16738h old!
20121023_174056 ??? 6.8 90 16 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1142 ON 68.3 H 30 300 ON NO - Pupils mismatch
20121023_174127 ??? 6.8 90 15 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1151 ON 70.1 H 30 300 ON NO - Pupils mismatch
20121023_174159 ??? 6.8 90 12 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1121 ON 67.8 H 30 300 ON NO - Pupils mismatch
20121023_174311 ??? 6.7 90 11 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1284 ON 69.2 H 30 300 ON NO - Pupils mismatch
20121023_174343 ??? 6.7 90 13 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1282 ON 51.2 H 30 300 ON NO - Pupils mismatch
20121023_174414 ??? 6.7 90 11 NaN -1.00 092604 1 400 990 0.4 0.4 0.3 3 1265 ON 69.7 H 30 300 ON NO - Pupils mismatch

Wobble test.

The next issue is to check the wobble of the pupil, this is an important issue and it affect to the AO. The wobble is checked moving the telescope rotator and measuring the camera lens displacement at close loop. The range of the camera lens is +-100 steps and inside of this range the system can go to any sky angle. This measurements is taken at bin 1, 200 Hz and 6l/D. If the pupil wobble is small we can start to adjust the pupil for the others binning to be inside of the camera lens range.

For the bin 1 the result is showed below;

ROTATOR ANGLE CAMERA LENS
degrees 1pixel/40steps
0 -100 21
30 -100 -17.14
60 -100 -49
90 -85 -73
120 -32 -80
150 9 -66
180 42 -40
210 53 -11
240 37 21
270 -5 43
300 -48 54
330 -95 40
360 -100 15

The plot of the wobble measured at the PYWFS is showed below;

* W unit pupil wobble:
PupilWobble.png

Integration of the new software.

Starting at 18:30UT.

New software is installed and tested using the AO system at close loop, all the routines need to close the loop were checked. The new software seems to work properly and the data taken shows the same performances that the old software. A set of data is taken and the results is showed in the table and plots bellow;

TrackNo RefStar Mag El Wind DIMM/OL Rec bin #mod freq gain mod nph AntiDrift SR filter exp #frames disturb SN notes
20121023_200058 ??? 6.7 90 9 NaN -1.00 092604 1 400 990 0.4 0.4 0.4 3 1242 ON 61.8 H 30 300 ON NO - Pupils mismatch
20121023_200130 ??? 6.7 90 8 NaN -1.00 092604 1 400 990 0.4 0.4 0.4 3 1237 ON 63.2 H 30 300 ON NO - Pupils mismatch
20121023_200202 ??? 6.7 90 6 NaN -1.00 092604 1 400 990 0.4 0.4 0.4 3 1238 ON 61.3 H 30 300 ON NO - Pupils mismatch
20121023_200312 ??? 6.6 90 12 NaN -1.00 092604 1 400 990 0.4 0.4 0.4 3 1325 ON 62.9 H 30 300 ON NO - Pupils mismatch
20121023_200346 ??? 6.6 90 5 NaN -1.00 092604 1 400 990 0.4 0.4 0.4 3 1312 ON 63.6 H 30 300 ON NO - Pupils mismatch
20121023_200417 ??? 6.6 90 4 NaN -1.00 092604 1 400 990 0.4 0.4 0.4 3 1309 ON 60.8 H 30 300 ON NO - Pupils mismatch

comparison of the modal plots

The plot below shows two modal plot for a close loop with the old software (cyan) and new (white). The performances are quite similar. * compare_new adn old:
Screenshotcomparison_modalplot.png

-- JuanGuerra - 23 Oct 2012

  • performance_new software:
    Screenshot_aftersoft.png

  • performance_old software:
    Screenshot_beforenew.png

I Attachment Action Size Date Who Comment
PupilWobble.pngpng PupilWobble.png manage 5 K 23 Oct 2012 - 19:22 UnknownUser W unit pupil wobble
Screenshot_aftersoft.pngpng Screenshot_aftersoft.png manage 60 K 23 Oct 2012 - 23:40 UnknownUser performance_new software
Screenshot_beforenew.pngpng Screenshot_beforenew.png manage 37 K 23 Oct 2012 - 23:40 UnknownUser performance_old software
Screenshotcomparison_modalplot.pngpng Screenshotcomparison_modalplot.png manage 17 K 23 Oct 2012 - 23:41 UnknownUser compare_new adn old
Topic revision: r5 - 24 Oct 2012, JuanGuerra
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