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This page gathers the information on the technical observations that are needed to perform NIKA2 calibration.

First version created on Feb. 7th by Hervé Aussel, F.-Xavier Désert, Jean-François Lestrade, Juan Maciàs-Pèrez, Frédéric Mayet, Laurence Perotto & Nicolas Ponthieu.

Contents

Pointing
Beammaps
Opacity
Calibrators
Gain-elevation monitoring

Pointing

A full pointing session (20 to 30 sources) to be done on the first night. Let's use Samuel's excell file to check the coverage in elevation and azymuth.

Beammaps

Beammap sequences, which are focus + pointing + beammap, are to be done at least once and preferably twice a day, spanning various elevation, at the best average focus (z central - 0.2 mm).

The best quality beammap should be achieved toward Mars when rising; You may consider also doing beammaps during the night toward 3C84 (as an alternative to planets, as none of them are visible at night for this campaign).

Beammap analysis status

The table below gathers the beammap scan ID, comments related either to the observing condition or to the reduced beammap quality and the analysis status

Status "done" means the analysis is completed, namely the kidpar file is produced using a 2-step iteration analysis, and uploaded in SVN.

	observing condition				analysis status
scan ID	source	UT	elevation	comments	analyser ID	data quality	status
20180213s139	Uranus	17:06	57.2 deg	opacity 0.24; pointing and focus was performed well before the beammap	JFMP	A1 #kids = 957. A3 #kids = 965. A2 #kids = 540.	done v0
20180214s63	Mars	06:09	30.4 deg	opacity 0.32	JFMP	A1 #kids = 953. A3 #kids = 940. A2 #kids = 527. A1 med fwhm = 12.5, avg fwhm = 12.6, rms = 1.6, G fit = 8.7 pm 1.2 A3 med fwhm = 12.5, avg fwhm = 12.6, rms = 1.7, G fit = 8.6 pm 1.2 A2 med fwhm = 17.7, avg fwhm = 17.7, rms = 1.2, G fit = 20.0 pm 0.5	done v0
20180216s262	Uranus	16:28:32	60.052254	tau: 0.197485	JFMP	A1 #kids = 974. A3 #kids = 956. A2 #kids = 538. A1 med fwhm = 12.4, avg fwhm = 12.4, rms = 1.4, G fit = 12.1 pm 1.2; A3 med fwhm = 12.2, avg fwhm = 12.2, rms = 1.4, G fit = 11.9 pm 1.2; A2 med fwhm = 17.2, avg fwhm = 17.2, rms = 1.0, G fit = 17.1 pm 1.3	done v0
20180217s123	Mars	08:51:06	24.538908	tau: 0.157984	JFMP	A1 #kids = 974. A3 #kids = 944. A2 #kids = 519. A1 med fwhm = 12.5, avg fwhm = 12.6, rms = 0.7, G fit = 12.4 pm 0.7; A3 med fwhm = 12.0, avg fwhm = 12.1, rms = 0.8, G fit = 11.9 pm 0.6; A2 med fwhm = 17.3, avg fwhm = 17.4, rms = 0.6, G fit = 17.3 pm 0.5	v0 done
20180218s148	Mars	09:45:48	17.791952	tau: 0.258819 beammap1scan99sub a some probs to reduce the data

Special beammap sequences

No special beammap tests are planned for this campaign as the Planet visibility is not favorable for testing subtle effects.

Opacity

A skydip scan per 8-hour observation shift, in all possible weather conditions, is needed

Table of the Skydip scans

Dates	scan #	tau225	UT	comment
2018-02-13	138	0.265982	16:55:35
2018-02-14	50	0.324578	05:01:54
2018-02-14	213	0.462108	18:20:39
2018-02-14	237	0.462108	19:47:03
2018-02-14	244	0.536094	20:40:32
2018-02-15	46	0.516668	03:52:17	tau > 0.5 and several spikes at ~ 1. We stop for the time being.
2018-02-15	52	0.523285	04:41:17
2018-02-15	111	0.409577	08:56:17
2018-02-15	301	0.595278	18:07:01
2018-02-15	319	0.467017	19:22:47
2018-02-16	127	0.400884	08:34:25
2018-02-16	283	0.16116	18:27:24
2018-02-17	9	0.162933	00:54:22
2018-02-18	149	0.401363	10:08:15
2018-02-18	197	0.641917	13:33:17

Calibrators

Monitor primary and secondary calibrators. Few of them but repeatedly along the run and at various elevation
Observe in priority Uranus, which is NIKA2 primary calibrator: do a series of 2 OTF 8x5 scans, twice or 3 times a day
Observe also Neptune and Mars using 2 8x5 OTF scans at constant elevation, twice a day
Observe MWC349 during the day and LKHa101 at night, using the loop script comprizing 4 OTF scans, at least twice a day

Below the visibility plot for Uranus, Mars, Neptune, 3C84, MWC349, LKHa101 and 2251+158 [TBD, Juan]

Science Visibility plot

Table of OTF 8x5 scans of Uranus

Dates	scan #	elevation	comment
20180213	134-137	61	otf 8x5
20180214	209-212	51	otf 8x5
20180215	328-331	31	otf 8x5
20180216	262	60	beammap

Table of OTF 8x5 scans of other Planets (Mars and Neptune)

Dates	scan #	source	elevation	comment
20180114	63	Mars	63	beammap
20180117	123	Mars	24	beammap
20180118	148	Mars	17	beammap

Table of OTF 8x5 scans of secondary calibrators (MWC349 and LKHa101)

Dates	scan #	source	elevation	comment
20180114	240-243	LkHa101	75	otf 8x5 : this PdB calibrator has extended structure at the 30m, hence likely not a good calibrator
20180116	92-95	MWC349	43	otf 8x5
20180116	103-106	NG7027	44	otf 8x5
20180116	115-118	CRL2688	49	otf 8x5
20180116	333-336	LkHa101	55	otf 8x5 : see comment above
20180118	111-114	MWC349	46	otf 8x5
20180118	116-119	NG7027	46	otf 8x5
20180118	121-124	CRL2688	49	otf 8x5

Gain-elevation monitoring

Observe at least two complete spans of the elevation from about 20 to 80 degrees using 3C84, if possible, or 2251+158

Table for gain curve task (3C84, i.e. 0316+413 in nikaw-17)

Dates	scan #	UT	elevation	comment
20180214	233-236	-	71 deg	otf 8x5
20180215	344-347	20	57 deg	otf 8x5
20180217	142-145	-	20 deg	otf 8x5
20180217	174-177	-	40 deg	otf 8x5
20180217	197-200	-	53 deg	otf 8x5
20180217	215-218	-	65 deg	otf 8x5
20180217	283-286	-	45 deg	otf 8x5

Table for gain curve task (2251+158 in nikaw-17)

Dates	scan #	UT	elevation	comment
201802XX	XX-XX	10:10	20 deg	otf 8x5

-  ⇤ ← Revision 33 as of 2018-02-18 15:40:11 → 
  Size: 6527
  Editor: NikaBolometer
  Comment:
+   ← Revision 35 as of 2018-02-18 16:06:05 → ⇥
  Size: 7570
  Editor: NikaBolometer
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 37:
+|| 20180218s148 || Mars || 09:45:48 || 17.791952 ||  tau: 0.258819 beammap1scan99sub a some probs to reduce the data ||  ||  ||  ||
-Line 95:
+Line 96:
+|| 20180117   || 123               || Mars   ||    24      || beammap  ||
|| 20180118   || 148               || Mars   ||    17      || beammap  ||
-Line 100:
+Line 104:
-|| 20180114   || 240-243           || LkHa101 ||      75    || otf 8x5  ||
+|| 20180114   || 240-243           || LkHa101 ||      75    || otf 8x5 : this PdB calibrator has extended structure at the 30m, hence likely not a good calibrator  ||
-Line 102:
+Line 106:
-|| 20180116   || 103-106           || NG7027  ||      44     || otf 8x5  ||
+|| 20180116   || 103-106           || NG7027  ||      44    || otf 8x5  ||
-Line 104:
+Line 108:
-|| 20180116   || 333-336           || LkHa101 ||      55    || otf 8x5  ||
+|| 20180116   || 333-336           || LkHa101 ||      55    || otf 8x5 : see comment above ||
|| 20180118   || 111-114           || MWC349  ||      46    || otf 8x5  ||
|| 20180118   || 116-119           || NG7027  ||      46    || otf 8x5  ||
|| 20180118   || 121-124           || CRL2688 ||      49    || otf 8x5  ||
-Line 116:
+Line 123:
-|| Dates       || scan #    || UT            || elevation   || comment  ||
|| 20180116    || 111-114   || 20:55-21:15   ||  76-73 deg  || otf 8x5  ||
+|| Dates       || scan #    || UT      || elevation   || comment  ||
|| 20180214    || 233-236   || -       ||  71 deg     || otf 8x5  ||
|| 20180215    || 344-347   ||  20     ||  57 deg     || otf 8x5  ||
|| 20180217    || 142-145   || -       ||  20 deg     || otf 8x5  ||
|| 20180217    || 174-177   || -       ||  40 deg     || otf 8x5  ||
|| 20180217    || 197-200   || -       ||  53 deg     || otf 8x5  ||
|| 20180217    || 215-218   || -       ||  65 deg     || otf 8x5  ||
|| 20180217    || 283-286   || -       ||  45 deg     || otf 8x5  ||