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LgswUnitDx operation

8:30: we start and we toss light on the LGSW. Using hexapod parameters of yesterday we are not in the LGSW but just in the PatCams. Today the Pos_ABS of the CalUnit encoder is 5872.

So we try to close the loop just on LGSW to better center the off-axis sources and remove the huge coma we have...

Done..

We switch to FLAO BIN2 + LGSW REC and we activate the TS to optimize the PSF on-axis...

LGSW_DARK: 20150222_162342

TN Notes
20150222_164142 G=0.5,0.2,0.1

LUCI image optimization

We acquire images with LUCI: FeII filter, focus stage = -385, N3.75 camera. AO loop closed on FLAO BIN2 + LGSW, low gain (0.5,0.1,0.1).

Board Z LUCI img FWHM X Notes
47.6 LUCI2.20150223.0003.fits 6.45 LGSW + FLAO BIN2
48.0 LUCI2.20150223.0004.fits 5.58
48.0 LUCI2.20150223.0005.fits 5.42
49.0 LUCI2.20150223.0006.fits 4.46
49.0 LUCI2.20150223.0007.fits 4.99
50.0 LUCI2.20150223.0008.fits 4.37
50.0 LUCI2.20150223.0009.fits 3.93
50.0 LUCI2.20150223.0010.fits 3.47
50.0 LUCI2.20150223.0010.fits 3.47
51.0 LUCI2.20150223.0011.fits 3.62
52.0 LUCI2.20150223.0012.fits 3.00
53.0 LUCI2.20150223.0013.fits 1.88
53.0 LUCI2.20150223.0014.fits   FLAO BIN2, 100Hz
53.0 LUCI2.20150223.0015.fits   Light steps = 55
53.0 LUCI2.20150223.0016.fits   Light steps = 53
53.0 LUCI2.20150223.0017.fits 1.50 Light steps = 52
54.0 LUCI2.20150223.0018.fits 1.33
55.0 LUCI2.20150223.0019.fits 1.19
56.0 LUCI2.20150223.0020.fits 1.20
57.0 LUCI2.20150223.0021.fits 1.67
57.0 LUCI2.20150223.0022.fits ??
58.0 LUCI2.20150223.0023.fits 2.02
59.0 LUCI2.20150223.0024.fits 1.58
60.0 LUCI2.20150223.0025.fits 2.88
62.0 LUCI2.20150223.0026.fits 4.32 LUCI DIT 5.0s
64.0 LUCI2.20150223.0027.fits 5.80 LUCI DIT 20.0s
55.0 LUCI2.20150223.0029.fits 1.18 New FLAO BIN2
Evaluation of the LUCI images:

argos_luci_argos_focus2.jpg

The measurement was normalized by the square root of the product of x and y FWHM. The fit in yellow follows the function of ((FocPos - 56.1)/4)^2 - 1.35

Now we try the focus scan with HeI filter.
Board Z LUCI img FWHM X Notes
55.0 LUCI2.20150223.0030.fits 1.73 FLAO BIN2 loop, 100Hz
Now we try the focus scan with Paschen beta filter.

Board Z LUCI img FWHM X Notes
55.0 LUCI2.20150223.0034.fits 1.41 FLAO BIN2 loop, 100Hz
We take few Snapshots while the FLAO BIN2 is running at 100Hz:

TN Notes
20150222_210352 130phot/subap on PYR
20150222_210605 40phot/subap on PYR
So on these measurements we decide the best Board Z stage position to properly focus on LUCI is 55.5mm.

JitterCompensation test

We load a sinusoidal disturbance on the ASM. Amplitude of the oscillation is 200nm PtV. We acquire TN while the mirror is oscillating at different frequencies (1, 10, 25, 30, 40, 50, 60, 70, 80, 90, 100)Hz. For each frequency we acquire a TN with jitter compensation loop closed (Gj=0.2, 0.4, 0.5) and open. FF gain is always set to 1.0.

First (bad) measures (gain always = 0.1):
TN AO Dist g FFg
20150222_184648 sn_1.0 0.1 1
20150222_184705 sn_1.0 0.1 1
20150222_184738 sn_20.0 0.1 1
20150222_184748 sn_20.0 0.1 1
20150222_184816 sn_40.0 0.1 1
20150222_184832 sn_40.0 0.1 1
20150222_184858 sn_60.0 0.1 1
20150222_184914 sn_60.0 0.1 1
20150222_185717 sn_1.0 0.1 1
20150222_185731 sn_1.0 0.1 1
20150222_185758 sn_20.0 0.1 1
20150222_185812 sn_20.0 0.1 1
20150222_185842 sn_40.0 0.1 1
20150222_185901 sn_40.0 0.1 1
20150222_185940 sn_60.0 0.1 1
20150222_190000 sn_60.0 0.1 1

Good measures:
TN AO Dist g FFg
20150222_195820 sn_0.0 0 1
20150222_195832 sn_0.0 0.2 1
20150222_195853 sn_0.0 0.4 1
20150222_195919 sn_0.0 0.5 1
20150222_195947 sn_1.0 0 1
20150222_200002 sn_1.0 0.2 1
20150222_200030 sn_1.0 0.4 1
20150222_200044 sn_1.0 0.5 1
20150222_200119 sn_10.0 0 1
20150222_200140 sn_10.0 0.2 1
20150222_200157 sn_10.0 0.4 1
20150222_200218 sn_10.0 0.5 1
20150222_200258 sn_20.0 0 1
20150222_200317 sn_20.0 0.2 1
20150222_200333 sn_20.0 0.4 1
20150222_200349 sn_20.0 0.5 1
20150222_203112 sn_25.0 0 1
20150222_203141 sn_25.0 0.2 1
20150222_203206 sn_25.0 0.4 1
20150222_203221 sn_25.0 0.5 1
20150222_203252 sn_30.0 0 1
20150222_203315 sn_30.0 0.2 1
20150222_203336 sn_30.0 0.4 1
20150222_203356 sn_30.0 0.5 1
20150222_203426 sn_40.0 0 1
20150222_203442 sn_40.0 0.2 1
20150222_203500 sn_40.0 0.4 1
20150222_203516 sn_40.0 0.5 1
20150222_203555 sn_50.0 0 1
20150222_203616 sn_50.0 0.2 1
20150222_203644 sn_50.0 0.4 1
20150222_203701 sn_50.0 0.5 1
20150222_203742 sn_60.0 0 1
20150222_203803 sn_60.0 0.2 1
20150222_203824 sn_60.0 0.4 1
20150222_203858 sn_60.0 0.5 1
20150222_203938 sn_70.0 0 1
20150222_203953 sn_70.0 0.2 1
20150222_204010 sn_70.0 0.4 1
20150222_204032 sn_70.0 0.5 1
20150222_204100 sn_80.0 0 1
20150222_204116 sn_80.0 0.2 1
20150222_204136 sn_80.0 0.4 1
20150222_204152 sn_80.0 0.5 1
20150222_204221 sn_90.0 0 1
20150222_204237 sn_90.0 0.2 1
20150222_204309 sn_90.0 0.4 1
20150222_204325 sn_90.0 0.5 1
20150222_204406 sn_100.0 0 1
20150222_204423 sn_100.0 0.2 1
20150222_204453 sn_100.0 0.4 1
20150222_204516 sn_100.0 0.5 1
Results are reported in JitterCompensation test

TipTiltSystemDx operations

We close the loop on FLAO BIN2, we null the gain on focus term and we defocus the PYR board by 5mm (from original 55mm to 50mm) to get 0.5" spot. At this point we try to center the spot on the QC by offsetting the TT modulation. We use 50-50 on FW1 and QC mirror on FW2.

Rot angle TT X offset [V] TT Y offset [V] X stage Y stage
210.0 -1.25 0.10 -73.5 -50.0
We want to reduce light so we switch FLAO to BIN4. We don't have combined REC so we need to create a FLAO BIN4 only:

COMB REC TAG ARGOS REC FLAO REC COMB REC
FLAO BIN4 only 36 modes, 36-150 on LGSW 20141126_215200 20130917_214654 20150222_214000
We create a modal history to be applied to the ASM ("apd_tip"). Then we close on FLAO BIN4, 500Hz, low gain on 36 modes (0.1). The Z stage has been moved to 50mm to get a 0.5" spot on the QC.

-- MarcoBonaglia - 22 Feb 2015
Topic revision: r7 - 05 Mar 2015, TommasoMazzoni
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