Back to the NIKA2 3rd Science pool
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 Macias-Pérez, Frédéric Mayet, Laurence Perotto & Nicolas Ponthieu.
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.
We manage to observe 20 sources in total.
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,v2 |
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,v2 |
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, v2 done |
20180218s148 |
Mars |
09:45:48 |
17.791952 |
tau: 0.258819 beammap1scan99sub a some probs to reduce the data - issues with PPS to investigated |
|
|
|
20180219s75 |
Mars |
08:52:42 |
23.943026 |
tau: 0.258326 beammap1scan99sub a |
JFMP |
A1 #kids = 974. A3 #kids = 954.A2 #kids = 522. A1 med fwhm = 12.5, avg fwhm = 12.5, rms = 1.0, G fit = 12.2 pm 0.9; A3 med fwhm = 12.2, avg fwhm = 12.3, rms = 1.0, G fit = 12.0 pm 0.9; A2 med fwhm = 17.5, avg fwhm = 17.6, rms = 0.6, G fit = 17.4 pm 0.5 |
v0, v2 done |
20180219s170 |
Uranus |
20:44:34 |
14.325526 |
tau: 0.267743 belongs to nikaw-17 |
JFMP |
A1 #kids = 908. A3 #kids = 893. A2 #kids = 536. A1 fwhm = 11.9 pm 0.5 (stat.) pm 0.7 (syst.) A3 fwhm = 11.9 pm 0.5 (stat.) pm 0.9 (syst.); A2 fwhm = 17.9 pm 0.4 (stat.) pm 0.9 (syst.) |
v0 done |
20180220s128 |
Mars |
09:04:44 |
22.425278 |
tau: 0.296854 beammap on Mars |
JFMP |
A1 #kids = 964. A3 #kids = 936. A2 #kids = 528. A1 med fwhm = 12.6, avg fwhm = 12.7, rms = 0.8, G fit = 12.5 pm 0.6; A3 med fwhm = 12.0, avg fwhm = 12.0, rms = 0.7, G fit = 11.9 pm 0.6; A2 med fwhm = 17.4, avg fwhm = 17.4, rms = 0.4, G fit = 17.3 pm 0.3 |
v0, v2 done |
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 |
|
2018-02-18 |
228 |
0.38849 |
23:54:22 |
|
2018-02-19 |
76 |
0.266743 |
09:15:25 |
|
2018-02-19 |
168 |
0.271677 |
20:27:15 |
|
2018-02-20 |
129 |
0.29265 |
09:27:13 |
Last scan of the run!!!Thanks to the IRAM staff for the support |
* Final selection of skydips:
input_scan_list =['20180213s138', '20180214s50','20180214s213','20180214s237', '20180214s244', $
- '20180215s111','20180215s301','20180216s127','20180216s283',$ '20180218s149','20180219s76','20180219s168','20180220s129']
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]
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 |
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 |
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 |
20180119 |
54-57 |
MWC349 |
46 |
otf 8x5 |
20180119 |
59-62 |
NG7027 |
46 |
otf 8x5 |
20180119 |
64-67 |
CRL2688 |
49 |
otf 8x5 |
20180119 |
78-79 |
MWC349 |
46 |
otf 8x5 |
20180119 |
81-84 |
NG7027 |
46 |
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 tau=0.17 fZ=-0.38 |
20180217 |
174-177 |
- |
40 deg |
otf 8x5 tau=0.18 fZ=-0.68 |
20180217 |
197-200 |
- |
53 deg |
otf 8x5 tau=0.18 fZ=-1.04 |
20180217 |
215-218 |
- |
65 deg |
otf 8x5 tau=0.18 fZ=-1.04 |
20180217 |
283-286 |
- |
45 deg |
otf 8x5 tau=0.18 fZ=-1.04 |
20180219 |
105-108 |
- |
18 deg |
otf 8x5 tau=0.28 fZ=-0.49 |
Table for gain curve task (2251+158 in nikaw-17)
Dates |
scan # |
UT |
elevation |
comment |
201802XX |
XX-XX |
10:10 |
20 deg |
otf 8x5 |