Night Time 20140323

Defined a new target position for PatCams: 20140322_205100

CalUnitSystem light on PatCams in DayTime, TN: 20130322_220800

1:20 - Test of PockelsCells: 100ns opening time counts: 1900, 900, 280

200ns: 2050, 950, 300

TN: 20140323_012459 solar ligth on M1 -> good illumination to measure FoV diameter

We put diodes to 0.2A and we scan the Pockels cells opening time: 100ns: 9000, 4000, 1600

500ns: 10200, 4800, 2000

1000ns: 11000, 6000, 2600

1500ns: 12800, 7200, 3300

3:16 - Preset acquire authorizing LUCI@RFBG on ACT0284 (about 4deg from M35, EL 60deg), dichroic slided in, the target is offsetted by [6.0; 1.0]arcsec.

Telescope back on M35, EL 63, AZ 258.

3:31 - We try to recenter the LGS within the FoV

New IM between LM1 and PatCams: 20140323_033220

We try to recenter also with a periscope loop

Shell RIP TN: 20140323_035507

JCG removes an actuator from the set. M2 restarted.

TN: 20140323_035833 Pupil loop closed

TN: 20140323_040024 Pupil & jitter loop closed

4:31 - We check the LAN flexures going from 45deg EL to Zentih: at each elevation we recenter the LGS with LM1-PatCams loop and we write down the LM1 motors positions:

EL	A1	A2	A3
45	14470	8626	13265
50	14498	8649	13212
60	14577	8687	13095
70	14672	8710	12972
80	14802	8736	12818
90	14940	8739	12679

On the way back to EL45 we set on LM1 motors the previous values, then we close the LM1-PatCams loops and we write down the final position.

EL	A1	A2	A3
80	14784	8741	12828
70	14672	8728	12962
60	14574	8695	13092
50	14498	8655	13207
45	14470	8637	13256

During the descending sweep the LGS are always found within the PatCams FoV using the ascending LM1 positions.

Another actuator dies and it is removed (560)

TN: 20140323_052208 EL45

TN: 20140323_052542 pupil loop closed, good for subapertures definition

TN: 20140323_052650 jitter loop closed

New slope_null acquired: 20140323_052924

We try to keep going the LM1-PatCams loop

We set a new PupilRecenteringTarget wrt the lab one: YELLOW = [+0.25; -0.25], RED = [+0.5; -0.5]. 20140323_054800

We redefine the subapertures wrt the lab ones: BLUE = [0; -1], YELLOW = [+3; -4], RED = [+5; -7]. New SubaperturesDefinition: 20140323_055200

New SlopeOffset: 20140323_055556

TN: 20140323_055940 half laser is closed

TN: 20140323_062326 good

LAN focus scan:

Stage [steps]	TN	Notes
-180k	20140323_061852
-160k	20140323_061657
-140k	20140323_061535	FWHM: 1.92, 2.1, 1.86, 1.99
-120k	20140323_061413	FWHM: 1.85
-100k	20140323_061309	FWHM: 1.98
-80k	20140323_061220	FWHM: 1.86
-60k	20140323_061010	FWHM: 1.95
-40k	20140323_060902
-30k	20140323_060643	FWHM: 2.2, 1.8
-20k	20140323_060546
-10k	20140323_060518
0k	20140323_060444

Sweep ToFfirst at big steps then at small ones:

ToF [us]	TN
80	20140323_062611
82	20140323_062719
84	20140323_062758
86	20140323_062856
88	20140323_062939
84	20140323_063226
85	20140323_063318
86	20140323_063403
87	20140323_063455

The best position seems to be 86us

We set incremental modes on M2:

M2 Z5 [um]	TN	SlopeOffset
5	20140323_063851	20140323_055556
-5	20140323_064013	20140323_055556
-5	20140323_064222	20140323_064141
-2.5	20140323_064317	20140323_064141
-1.25	20140323_064408	20140323_064141

7:00 - Shell RIP, end of games

9:00 - Email to Armando

10:04 - Shell is back, Steve tries to move telescope to EL50, shell RIP again...

11:00 - Test of PI TF with sinusoidal command

Commanded freq [Hz]	TN	Notes
1	20140323_114547	A=1.35"
2	20140323_115229
4	20140323_115753	wrong
4	20140323_120918	3.5Hz
8	20140323_121157	6.5Hz
16	20140323_121423	12Hz, A=1.3"
32	20140323_121620	20Hz, A=1.25"
64	20140323_121843	26Hz, A=1.25"

Test with a step command.