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.

p1.png


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', $

results_opacity_n2r15.png comparison_opacity_n2r15.png


Calibrators

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

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

CalibNika2Run15 (last edited 2018-02-28 17:20:25 by NikaBolometer)