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:

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