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Describe NK2013_Jun12 here. NIKA November 2012 S2

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2013-06-12

Cryostat Temperature: 216mK (naturally set by settings of 3He circulation [no heater] trying to mitigate oscillation due to leak).
Arrays status tonight: pixels 2mm - xxx noise; XX pixels 1mm xxx noise (to be determined)

Modulation frequency: 8kHz 1mm, 4kHz 2mm

Opacity is measured with the new taumeter at 225 GHz

For start Nasmyth offsets : 28, 28

Set pointing : 0, 0

Set Focus : -2.40 mm

Quick description of the session:
Mars Pointing, focus, otfgeom.
4 sources at different elevation to check the nasmyth corrections. If ok, correct pointing model
Mars, pointing focus, otfgeom
Pointing session for 3h
Mars OTFgeom at 3 foci, 5 lissajous focus, 6 lateral positions
Secondary calibrators: pointing, otf_3x3, faintsourceLissajous
skydip
faint sources to finish for noise measurements

Scan	UT	Source	Command	Az	El	Pointing X, Y, Focus	Tau225	Comment
110	9h14	Mars	Track	111	61	0, 0, -2.4	0.824	nasxy=28,28
111	9h25	Mars	cross	114	61	0, 0, -2.4		nasxy=28,28
112	9h28	Mars	cross	115	62	-6, -2, -2.4		nasxy=28,28
113	9h36	Mars	focus Totpow	117	63	-2, -3, -2.4	0.856	quite close to the Sun nasxy=28,28
114	9h45	Mars	focus Totpow	120	65	-2, -3, -2.4	0.863	nasxy=28,28
115	9h50	Mars	otf geom	126	67	-2, -3, -2.4	0.863	nasxy=28,28 (focus could be -1.7 tbc
116	10h02	3C111	cross	80	78	-2, -3, -2.4		nasxy=28,28 (off found -4, -3 ok)
117	10h12	3C454.3	cross	269	27	-2, -3, -2.4		nasxy=28,28 resonances lost (fxd's fault) should do track first do not use
118	10h30	3C454.3	cross	269	27	-2, -3, -2.4		nasxy=28,28 difficult to point
119	10h38	Mars	track	151	73	0, 0, -2.4	0.879	FROM NOW ON: nasxy=0,0 Second Pointing model (nas corrections included 28,28)
120	10h51	Mars	cross	151	73	0, 0, -2.4	0.891	Found at 2mm: -3 -3
121	10h54	Mars	cross	162	74	-3, -3, -2.4	0.891	Found at 2mm: 0 -4 Some 2mm pixels (20) were missing in all previous scans
122	11h04	Mars	cross	169	74	-3, -3, -2.4		-3 -3 are correct
123	11h09	Mars	focus	169	74	-3, -3, -2.4		focus is not clear: try -1.4 and larger range +-2mm
124	11h18	Mars	focusp2	169	74	-3, -3, -1.4		focus at -1 seems ok
125	11h18	Mars	focusp	169	74	-3, -3, -1.	0.9	focus at -1 again (but difficult)
126	11h29	Mars	cross	190	74	-3, -3, -1.	0.98	gives -4, -1
127	11h31	Mars	cross	190	74	-3, -3, -1.		gives -6, 0
128	11h36	Mars	cross	190	74	-5, -1, -1.		gives -5, 0
129	11h44	0420-014	track	192	50	-5, -1, -1.
130	11h46	0420-014	cross	192	51	-5, -1, -1.		gives -7, ?
131	11h50	0420-014	cross	192	51	-5, -1, -1.		gives ? too noisy (bad sky)
132	11h52	0420-014	cross	192	51	-5, -1, -1.		gives too noisy
133	11h55	3C111	track	279	80	-5, -1, -1.
134	12h00	3C111	cross	279	79	-5, -1, -1.	0.906	too noisy. Technical time to replace some spindle electronics 1/2h
135	13h15	Mars	track	247	60	-5, -1, -1.	0.849	resume observations : do focus activities
136	13h24	Mars	cross	250	58	-5, -1, -1.	0.894	found -8,-3; -7,-4
137	13h24	Mars	cross	250	58	-7, +4, -1.		error on +4, found -9, -5 ; -8, -6
138	13h30	Mars	cross	250	57	-7, -4, -1.		found -10, -3 ; -9, -4
139	13h34	Mars	focus	252	57	-9, -4, -1.		found -0.9 ; -0.5
140	13h40	Mars	focus	254	55	-9, -4, -0.7	0.969	found -0.6 ; -0.4
141	13h46	Mars	cross	255	54	-9, -4, -0.5		found -11 -6 ; -10 -7 iffy
142	13h49	Mars	cross	255	53	-10, -7, -0.5		found -9 -4 ; -8 -6
143	13h52	Mars	otfgeom	256	53	-10, -5, -0.5		ok but large fluctuations (some reso lost)
144	14h00	Mars	point lissajous	260	49	-10, -5, -0.5	1 mn testing the procedure and ability to recover pointing
145	14h17	Mars	Faint lissajous	260	49	-10, -5, -0.5	same but 5 min testing the procedure and ability to recover pointing in hard weather
146	14h27	Mars	otfgeom	263	46	-10, -5, -2	focal plane geom. out of focus
147	14h42	Mars	otfgeom	265	44	-10, -5, +1	focal plane geom. out of focus