In the morning telescope is dedicate to LUCI1 MOS exchange.

12:15: telescope released, SX and DX CalUnit deployed.

LgswUnitSx FoV measurement

We do a sweep of +/-10" in 11 steps:

Results are very similar to yesterday's ones. However we did a mistake in the Rx and Ry determination. We measure the centers to be:

Pupil	[Rx; Ry]	PI
Blue	[95.0; -128.0]	[-0.60; -2.05]
Yellow	[93.5; -130.3]	[-4.00; 0.90]
Red	[93.5; -132.0]	[-3.40; 4.20]

From these position we saved a new jitter initial position: 20160309_213300

Hexa

4.80

1.00

-0.71

93

-128

LgswUnitSx closed loop test

We try to close with LGSW only:

TN	AO Gain	Res. WF [nm rms]	AO rec	DIMM ["]	JCL	PCL	Notes
20160309_210756	0.2,0.1,0.05	229.449	20151212_220700	-1	F	F

We also acquire a new set for pupil motors positions:

Pupil	X	Y
Blue	350	421
Red	525	412
Yellow	341	438

and we save a new pupil target tag: 20160309_213652

Then we load a disturb equivalent to 1" seeing:

TN	AO Gain	Res. WF [nm rms]	AO rec	DIMM ["]	JCL	PCL	Notes	Plot
20160309_212842	0.5,0.5,0.5	229.2	20151212_220700	-1	F	F
20160309_212856	0.5,0.5,0.5	237.568	20151212_220700	-1	F	F
20160309_212952	0.5,0.5,0.5	251.417	20151212_220700	-1	F	F
20160309_214244	0.5,0.5,0.5	203.056	20151212_220700	-1	F	F
20160309_215956	0.5,0.5,0.5	221.59	20151212_220700	-1	F	F

Hexa	4.80	1.00	-0.65	93	-128
Board	-74.3	-53.7	45.0

LUCI1 rotator was set to 341deg and the pupil derotator of FLAO was at 0deg.

We also measure the PCT of SX using CalUnit, since we noticed a drop in performance of the red PC:

Side	PCT
SX

Then we close the loop using the Pyramid as TT sensor (BIN2). Disturb was set to 1". Thruth sensing was on:

TN	AO Gain	Res. WF [nm rms]	AO rec	DIMM ["]	JCL	PCL	Notes
20160309_231432	1,0.45,0.4	77.762	20151212_233400	-1	T	F
20160309_231458	1,0.45,0.4	78.1656	20151212_233400	-1	T	F
20160309_231639	1,0.5,0.45	81.3405	20151212_233400	-1	T	F

We try to reduce the gain of the 2 astigmatism modes to check if we could have better performance (astigmatism modes have a bigger residual rms than focus and other nearby modes).

TN	AO Gain	Res. WF [nm rms]	AO rec	DIMM ["]	JCL	PCL	Notes	Plot
20160309_232027	1,0.5,0.45	79.4328	20151212_233400	-1	T	F	Gasti= 0.4
20160309_232045	1,0.5,0.45	77.5719	20151212_233400	-1	T	F
20160309_232105	1,0.5,0.45	82.5853	20151212_233400	-1	T	F	Gasti= 0.2
20160309_232123	1,0.5,0.45	83.4946	20151212_233400	-1	T	F
20160309_232156	1,0.5,0.45	82.8725	20151212_233400	-1	T	F	Gasti= 0.6
20160309_232209	1,0.5,0.45	80.7496	20151212_233400	-1	T	F

PockelsCellsTransmission test

Side	PCT
DX
SX

LgswUnitDx subapertures definition

We start from 20151016_170000 subapertures set. This is a CoG set, with Internal source pattern. We define a new set for TCoG48: 20160309_235100

To produce a on-sky pattern of subapertures we must remove the central ones (89 on Blue, 266 on Yellow and 443 on Red) and the top row of the Blue pupil ( 66, 81, 96, 111, 126).

We create a new set using as centres:

Pupil	Cx	Cy
Blue	197	128
Yellow	78	69
Red	79	194

So we have the following subap sets for DX-LGSW:

• CoG, on-sky: 20160310_000700
• TCoG48, on-sky: 2060310_000900