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NIKA January 22th, 2014 / S3

Back to list of day to day logbook of observations

2014-01-22

Now we will use the tapas database that automatically fills scans table with the informations we were filling by hand untill now.

So please login with the t21 acount and its usual password (durc***9) to the TAPAS database.

Actually only Lissajous and and skydip scans appear on TAPAS, all crosses, focus, otfmap are missing ! So continue with manual log until this problem on TAPAS is solved.

Programm for today:

Check pointing and Nasmyth offset after re-alignment with the laser. Conclusion from yesterday: we don't have a reliable way to optimise the radio alignment, so we will rely only on the laser alignment, which seem very close to optimal according to 1st conclusions from yesterday.
Focus and Beam maps (standard + Lissajou).
Pointing session
Polariser on, and test observations with polariser: beam maps (+pointing and focus of course) first on planet then on a polarised source.

Scan	UT	Source	Command	Az	El	Pointing X,Y, Focus	Tau225	Comment
10	14h00	Uranus	Track -200 -200	123	40	0,0,0.0 -2.4	0.15	Track60
11	14h03	Uranus	cross	123	40	0,0,0.0	0.15	offset 0 0
12	14h04	Uranus	stopped	123	40	0,0,0.0	0.15	stopped
13	14h04	Uranus	Cross	123	40	0,0,0.0	0.15	offset -40 10 /sys nasmyth
14-18	14h11	Uranus	focusliss	123	40	0,0,0.0	0.15	tuning not working between subscans
19	14h11	Uranus	otfgeom	123	40	0,0,0.0
20	14h11	Diy-TIP	skydip_up	124	40	0,0,0.0
22	14h18	Uranus	track -200 -200	127	42	0,0,0.0
23	14h19	Uranus	focusp	128	42	0,0,0.0		set focus -1.8
24	14h22	Uranus	focusp	128	44	0,0,0.0 -1.8
25-29	14h26	Uranus	focusliss	129	44	0,0,0.0		set focus -1.4
30-34	14h39	Uranus	focusliss	133	46	0,0,0.0 -1.4
35	14h48	Uranus	focusp	136	47	0,0,0.0
36	14h52	Uranus	focusp	137	47	0,0,0.0		set focus -1.5
37	14h54	Uranus	pointliss	138	47	0,0,0.0 -1.5		offset -70 10 /sys nasmyth
38	14h59	Uranus	pointliss	139	48	0,0,0.0		offset -10 10 /sys nasmyth
39	15h00	Uranus	pointliss	140	49	0,0,0.0		offset -40 -20 /sys nasmyth
40	15h03	Uranus	pointliss	141	49	0,0,0.0		offset -40 40 /sys nasmyth
41	15h06	Uranus	pointliss	142	49	0,0,0.0		offset -40 -10 /sys nasmyth
42	15h08	Uranus	pointliss	142	49	0,0,0.0		set pointing 10 15
43	15h11	Uranus	pointliss	142	49	10 , 15 -1.5		Not usable, some data missing, to be investigated
44	15h11	Uranus	cross	144	50	10 , 15 -1.5		Not usable, some data missing, to be investigated
45	15h17	Uranus	pointliss	145	51	10 , 15 -1.5		Not usable, some data missing, to be investigated, a lot of snow
46	15h26	Uranus	pointliss	149	52	10 , 15 -1.5		a lot of snow
47	15h33	diy-tip	skydip_up	149	52	10 , 15 -1.5		a lot of snow, fog
48	15h52	Uranus	otf5x5	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on (cancelled)
49	15h55	Uranus	otf5x5_pol	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on at 0 deg
50	16h09	Uranus	otf5x5_pol/otf5x5 (TBC)	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on at 0 deg (cancelled tbc)
51	16h10	Uranus	otf5x5_pol/otf5x5 (TBC)	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on at 0 deg
52	16h19	Uranus	otf5x5_half	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on at 60 deg
53	16h24	Uranus	track	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on at 120 deg
54	16h26	Uranus	otf5x5_half	159	54	10 , 15 -1.5		modulator on, no hwp, polarizer on at 120 deg
55	16h32	Uranus	otf5x5_half	159	54	10 , 15 -1.5		modul on, polar on at 120 deg (redo to check pako script). stop obs bad weather
56	20h32	Uranus	track	250	28	10 , 15 -1.5		resume obs, with deicing on, so useful just to test polar aquisition
57	20h32	Uranus	cross	250	28	10 , 15 -1.5
58	20h32	Uranus	pointliss	250	28	10 , 15 -1.5		antenna not thermalized just testing codes
59	20h32	Uranus	cross	250	28	10 , 15 -1.5		antenna not thermalized just testing codes
60	20h32	Uranus	track	250	28	10 , 15 -1.5		antenna not thermalized just testing codes
61	20h32	Uranus	track	250	28	10 , 15 -1.5		antenna not thermalized just testing codes
62	20h32	Uranus	cross	250	28	10 , 15 -1.5		antenna not thermalized just testing codes
64	20h32	Uranus	otf5x5_half	250	28	10 , 15 -1.5		(polarizer 0deg + HWP immobile) antenna not thermalized just testing codes
65	20h32	Uranus	cross	250	28	10 , 15 -1.5		(polarizer 0deg + HWP immobile) antenna not thermalized just testing codes
66	20h32	Uranus	cross	250	28	10 , 15 -1.5		(polarizer 0deg + HWP rotating) antenna not thermalized just testing codes
67	20h32	Uranus	otf5x5_half	250	20	10 , 15 -1.5		(polarizer 0deg + HWP rotating) antenna not thermalized just testing codes
68	20h32	Uranus	skydip_up	250	20	10 , 15 -1.5		cancelled (forgot to specify azimuth in script; telescope was going too far)
69	20h32	Uranus	track	250	20	10 , 15 -1.5		back on uranus
70	21h30	Uranus	track	250	20	10 , 15 -1.5		turn polariser to minimize parasit background (reflection from cabin)
71	21h45	3C84	track	289	62	10 , 15 -1.5		Uranus too low
72	21h45	3C84	otf5x5	289	62	10 , 15 -1.5		Tack a map on bright source with the polarizer and HWP
73	22h03	3C84	pointliss	290	59	10 , 15 -1.5	0.2	Polariser and HWP removed to have some continuum map before end of session. scan cancelled
74	22h03	3C84	pointliss	290	59	0 , 0 -1.5	0.2	(wanted to start with pointing 0 0)
75	22h03	3C84	cross	290	59	0 , 0 -1.5
76	22h03	3C84	pointliss	290	58	7 , 10.1 -1.5	0.2
77	22h13	3C84	cross	290	57	7 , 10.1 -1.5
78-82	22h16	3C84	focusliss	290	57	7 , 10.1 -1.5		best foc found at -1.4 @ 1mm and -1.1 @ 2mm
83	22h20	3C84	focusp	290	57	7 , 10.1 -1.5		analysis can't find a proper focus. do another scan
84	22h20	3C84	focusp	290	57	7 , 10.1 -1.5		problem with creation of the raw data, could recover it, find also foc -1.4
85	22h30	3C84	cross	291	53	7 , 10.1 -1.4		now raw are OK, problem in scan 84 is a mystery...
86	22h30	3C84	pointliss	291	53	7 , 10.1 -1.4	0.3	offset -40 -30 /sys nasmyth
87	22h39	3C84	pointliss	291	53	7 , 10.1 -1.4	0.3	offset -30 -40 /sys nasmyth
88	22h39	3C84	pointliss	291	53	0 , 0 -1.4	0.3	we try to set nas offset with pointing 0 0 on det 494 (and 5)
89	22h39	3C84	pointliss	291	53	0 , 0 -1.4	0.3	offset -37 -30 /sys nasmyth => OK source centered on det 494
90	22h55	3C84	cross	292	49	0 , 0 -1.4	0.3	494 chosen as reference detector if following scans show it is stable
91	22h55	3C84	otfgeom	292	49	0 , 0 -1.4	0.3
92	22h55	3C84	otfgeom	292	49	0 , 0 -1.4	0.3	problem with creation of the raw data
93	22h55	diy-tip	skydip_up	292	49	0 , 0 -1.4	0.3
94	23h29	W3OH	track	323	38	0 , 0 -1.4	0.3	go to strong secondary calibrator nearby
95	23h29	W3OH	otfgeom	323	38	0 , 0 -1.4	0.3
96-100	23h29	W3OH	focusliss	323	38	0 , 0 -1.4	0.3	source is 17.3 x 9.5 ", not good for focus, but not enough time for other obs
101	23h29	W3OH	pointliss	323	38	0 , 0 -1.4	0.3
102	23h50	W3OH	focusp	323	38	0 , 0 -1.4	0.3	to compare with the focusliss
103	23h29	W3OH	cross	323	38	0 , 0 -1.4	0.3