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	PM= [426, 525], [285, 375], [413, 335]
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]

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

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