SW updates

Camera lens tracking loop works.

Hexapod

After the hexapod fault with the OSS, it is decided that the hexapod will remain fixed where it is, and no automatic offload implemented.

Closed loop tests

Morning spent with open/closed loop data acquisition on the VisAO camera.

Afternoon:

we take a couple of optical loop data to look at the modalplot:

TrackNo RefStar Mag El Wind DIMM/OL Rec bin #mod freq gain mod nph AntiDrift SR filter exp #frames disturb SN notes
20110720_154032 ??? 8.9 -2147483648 -2147483648 NaN -1.00 114959 1 400 800 0.8 0.4 -1.0 0 248 ON -1.0 ? -1 -1 ON NO  
20110720_154141 ??? 8.9 -2147483648 -2147483648 NaN -1.00 114959 1 400 800 0.8 0.4 -1.0 0 248 ON -1.0 ? -1 -1 ON NO  


-- AlfioPuglisi - 20 Jul 2011
  • modalplot.png:
    modalplot.png

Pupil magnification test

From LBT measurements we know that the correct scale is 30.36 mm / pixel (see LabTest20110113 ).

Procedure:

0) System at 100Hz, mod=0.5mrad, high flux, stages manually centered.

1) Apply pair pattern to adsec
2) Acquire slopenull from WFS Arbitrator GUI and set them
3) Apply negative pattern to adsec
4) Save an optical loop data with slopes enabled.
5) Analyse result with elab_lib/act_distance.pro

The "BAD" measurements seem actually to be a bug in the act_distance.pro, because the images are not so bad.

slopes saved: 20110720_164950
nslopes:4000
act pattern : MAG-act_pair_603_239_dis751.487.fits
Distance (theoretical): 24.75
Distance (measured): 24.491
Teor/meas= 1.011

slopes saved: 20110720_171027
nslopes:4000
act pattern : MAG-act_pair_047_462_dis744.895.fits
Distance (theoretical): 24.535
Distance (measured): n/a (9 pix?)
Teor/meas= -- BAD - act_distance.pro is not able to calculate the distance

slopes saved: 20110720_171404
nslopes:4000
act pattern : MAG-act_pair_028_362_dis751.487.fits
Distance (theoretical): 24.753
Distance (measured): 24.364
Teor/meas= 1.016

slopes saved: 20110720_171625
nslopes:4000
act pattern : MAG-act_pair_252_587_dis752.808.fits
Distance (theoretical): 24.796
Distance (measured): 22.168
Teor/meas= 1.119

slopes saved: 20110720_171838
nslopes:4000
act pattern : MAG-act_pair_237_602_dis752.807.fits
Distance (theoretical): 24.796
Distance (measured):
Teor/meas= -- BAD - act_distance.pro is not able to calculate the distance

slopes saved: 20110720_172221
nslopes:4000
act pattern : MAG-act_pair_157_474_dis751.487.fits
Distance (theoretical): 24.752
Distance (measured): 18 pix?
Teor/meas= bug in act_distance.pro

slopes saved: 20110720_172311
nslopes:4000
act pattern : MAG-act_pair_155_350_dis744.895.fits
Distance (theoretical): 24.535
Distance (measured): 21.44 ?
Teor/meas= bug in act_distance.pro

slopes saved: 20110720_172524
nslopes:4000
act pattern : MAG-act_pair_140_492_dis752.808
Distance (theoretical): 24.796
Distance (measured): 10.895 ?
Teor/meas= bug in act_distance.pro
Topic revision: r2 - 20 Jul 2011, AlfioPuglisi
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