NK2014_Oct12 - www.iram.es Main Wiki

NIKA October 10th, 2014 / S4

Back to list of day to day logbook of observations

2014-10-10

Opacity is measured with the new taumeter at 225 GHz

Nasmyth offsets : -19, 5.8

Set pointing : 0, 0

Set Focus : -2.4 mm

Quick description of the session: measure polarization of quasars at various elevations and planets to test our system and calibrate

Polarizer on, HWP on but not turning at session start, and since MPPSync is dead, we will turn the HWP by hand when we start polarised observations.

Data Repository: Raw_X9

Acquisition = 39.7 Hz

Observing account: t21

Remark after few scans: TAPAS is working now, we see the scans, but we continue the manual log just in case.

Scan	UT	Source	Command	Az	El	Pointing X, Y, Focus	Tau225	Comment
1-3	00h46	Uranus	Track off -200 -200	208	54	0,0,-2.4	0.2	Tuning. We started a bit late, the time that ice melts and sky clears !
4	00h50	Uranus	cross	208	54	0,0,-2.4	0.2
5	00h56	Uranus	cross	213	53	0,0,-2.4	0.1	Problem processing the scan
6	01h00	Uranus	cross	213	53	0,0,-2.4	0.1
7	01h03	Uranus	cross	213	53	-2.5,6.4,-2.4	0.1	set pointing -2.5 6.4
8	01h08	Uranus	focusp	213	53	-2.5,6.4,-2.4	0.1
9	01h03	Uranus	cross	213	53	-2.5,6.4,-2.0	0.1	set focus -2.0
10	01h08	Uranus	focusp	213	53	3.5,-3.8,-2.0	0.1	Jumps in data, bad for processing
11	01h17	Uranus	focusp	220	51	3.5,-3.8,-2.0	0.1
12	01h25	Uranus	otfgeom_25	220	49	3.5,-3.8,-2.0	0.1	surely defocussed, but useful to debug holes with dataprocessing
13	01h38	Uranus	focusp	225	48	3.5,-3.8,-2.0	0.1
14-18	01h45	Uranus	focusliss	225	48	3.5,-3.8,-2.0	0.1
19-23	01h52	Uranus	focusliss	230	48	3.5,-3.8,-1.4	0.1
24-28	01h55	Uranus	focusliss	230	48	3.5,-3.8,-0.6	0.1	we were visibly completely out of focus in preceeding scans
29	02h10	Uranus	cross	235	41	3.5,-3.8,-0.6	0.2
30	02h20	Uranus	cross	235	41	-2.3,6.2,-0.6	0.2
31	02h25	Uranus	focusp	240	38	-2.3,6.2,-0.6	0.2	say focus -0.77
32	02h28	Uranus	otfgeom_25	240	38	-2.3,6.2,-0.6	0.2
33	02h49	Uranus	otf3x3	240	38	-2.3,6.2,-0.6	0.2	HWP in reference position (Andrea in cabin to rotate by hand)
34	02h54	Uranus	otf3x3	240	38	-2.3,6.2,-0.6	0.2	HWP in reference position
35	03h01	Uranus	otf3x3	240	35	-2.3,6.2,-0.6	0.2	HWP ref + 7 steps anti-clockwise (facing cryostat)
36	03h07	Uranus	otf3x3	240	35	-2.3,6.2,-0.6	0.2	HWP ref + 7 steps anti-clockwise (facing cryostat)
37	03h16	Uranus	otf3x3	240	31	-2.3,6.2,-0.6	0.2	HWP ref + 14 steps
38	03h20	Uranus	otf3x3	240	31	-2.3,6.2,-0.6	0.2	HWP ref + 14 steps
39	03h25	Uranus	otf3x3	240	28	-2.3,6.2,-0.6	0.2	HWP ref + 21 steps
40	03h29	Uranus	otf3x3	240	28	-2.3,6.2,-0.6	0.2	HWP ref + 21 steps
41	03h35	0234+285	track -200 -200	263	60	-2.3,6.2,-0.6	0.2	this quasar was observed at PDB on Aug 22 at 2mm
42	03h38	0234+285	otf3x3	263	60	-2.3,6.2,-0.6	0.2	HWP ref + 0 steps
43	03h41	0234+285	otf3x3	263	60	-2.3,6.2,-0.6	0.2	HWP ref + 0 steps
44	03h49	0234+285	otf3x3	265	58	-2.3,6.2,-0.6	0.2	HWP ref + 7 steps
45	03h54	0234+285	otf3x3	265	58	-2.3,6.2,-0.6	0.2	HWP ref + 7 steps
46	04h00	0234+285	otf3x3	265	56	-2.3,6.2,-0.6	0.2	HWP ref + 14 steps
47	04h06	0234+285	otf3x3	265	56	-2.3,6.2,-0.6	0.2	HWP ref + 14 steps
48	04h12	0234+285	otf3x3	268	54	-2.3,6.2,-0.6	0.2	HWP ref + 21 steps
49	04h16	0234+285	otf3x3	268	54	-2.3,6.2,-0.6	0.2	HWP ref + 21 steps
50	04h22	CasA	track -200 -200	320	30	-2.3,6.2,-0.6	0.2
51	04h26	CasA	otf3x6	320	30	-2.3,6.2,-0.6	0.2	HWP ref + 0 steps
52	04h30	CasA	track	320	30	-2.3,6.2,-0.6	0.2
53	04h31	CasA	otf3x6	320	30	-2.3,6.2,-0.6	0.2	HWP ref + 0 steps
54	04h35	CasA	otf4x6	320	30	-2.3,6.2,-0.6	0.2	HWP ref + 7 steps
55	04h40	CasA	otf4x6	324	28	-2.3,6.2,-0.6	0.2	HWP ref + 7 steps
56	04h47	CasA	otf4x6	324	27	-2.3,6.2,-0.6	0.2	HWP ref + 14 steps
57	04h52	CasA	otf4x6	324	26	-2.3,6.2,-0.6	0.2	HWP ref + 14 steps
58	04h58	CasA	otf4x6	325	25	-2.3,6.2,-0.6	0.2	HWP ref + 21 steps
59	05h03	CasA	otf4x6	325	24	-2.3,6.2,-0.6	0.2	HWP ref + 21 steps
60	05h08	3C84	track	290	53	-2.3,6.2,-0.6	0.2
61	05h10	3C84	cross	290	53	-2.3,6.2,-0.6	0.2
62	05h13	3C84	focus	290	53	3.1,-3.5,-0.6	0.2
63	05h16	3C84	cross	290	53	3.1,-3.5,-1	0.2
64	05h19	Crab	track	224	70	-1.9,4.8,-1	0.2	Finaly no, the map of Crab would take too long, we need prism data
65	05h25	3C84	cross	290	53	-1.9,4.8,-1	0.2
66	05h28	DIY-Tip	DYIup	290	53	-1.9,4.8,-1	0.2	sky dip
67	05h28	DIY-Tip	otfgeom_25	290	53	-1.9,4.8,-1	0.2	polariser removed, prism put ; scan cancelled forgot to change source
68	05h50	3C84	track	290	44	-1.9,4.8,-1	0.2
69	05h55	3C84	otfgeom_25	290	44	-1.9,4.8,-1	0.2	imbfits not created from here
70	06h15	3C84	otf3x3	290	44	-1.9,4.8,-1	0.2	cancelled
71	06h15	0925+504	track	406	66	-1.9,4.8,-1	0.2
72-73	06h17	0925+504	otf3x3	406	66	-1.9,4.8,-1	0.2	scan 73 cancelled, HWP ref + 0 steps
74-75	06h30	0925+504	otf3x3	406	67	-1.9,4.8,-1	0.2	HWP ref + 7 steps
76-77	06h40	0925+504	otf3x3	403	68	-1.9,4.8,-1	0.2	HWP ref + 14 steps
78-79	06h51	0925+504	otf3x3	401	69	-1.9,4.8,-1	0.2	HWP ref + 21 steps
80	07h04	Horsehead	track	232	35	-1.9,4.8,-1	0.2	HWP ref + 0 steps
81-82	07h10	Horsehead	otf3x3	232	35	-1.9,4.8,-1	0.2	HWP ref + 0 steps
83-84	07h25	Horsehead	otf3x3	235	33	-1.9,4.8,-1	0.2	HWP ref + 7 steps
85-86	07h35	Horsehead	otf3x3	238	33	-1.9,4.8,-1	0.2	HWP ref + 14 steps
87-88	07h45	Horsehead	otf3x3	238	33	-1.9,4.8,-1	0.2	HWP ref + 21 steps
89	07h55	CRL618	track	290	37	-1.9,4.8,-1	0.2	HWP ref + 0 steps
90	07h58	CRL618	cross	290	37	-1.9,4.8,-1	0.2	HWP ref + 0 steps we try a pointing with 2 beams!
91	08h00	CRL618	focus	290	37	-1.9,4.8,-1	0.2	HWP ref + 0 steps set pointing 7.8 2.9 / focus not good
92	08h02	CRL618	focus	290	37	7.8, 2.9-1	0.2	HWP ref + 0 steps set focus -0.85
93	08h07	CRL618	cross	290	37	5.8, 0.7,-0.85	0.2	HWP ref + 0 steps set pointing 5.8 0.7
94	08h10	0925+504	track	290	37	5.8, 0.7,-0.85	0.2	HWP ref + 0 steps
95	08h22	0925+504	track	290	37	5.8, 0.7,-0.85	0.2	start to test with the diode
96	08h24	0925+504	otf5x5	349	76	5.8, 0.7,-0.85	0.2	cancelled, wrong edited of the map step = 16 time 24 min, too long time
97	08h25	0925+504	otf5x5	349	76	5.8, 0.7,-0.85	0.2	cancelled, wrong script modified
98-100	08h29	0925+504	otf5x5	349	76	5.8, 0.7,-0.85	0.2	HWP ref always at 0 step, 99 scan is a track
101-102	08h38	0925+504	otf5x5	343	76	5.8, 0.7,-0.85	0.2	HWP ref +7 step. Source is not detected in scans 100 + lost tuning at 1mm during scan 101. Do not use 102: Alain changed the diode: was at 6.80 and put it at 4.80