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First analysis from data obtained on Aug 12 - 17

The data obtained during the NIKA2 run 67 (i.e. calibration scans & beam maps on Uranus, Neptune, Mars, and Mercury, as well as the secondary flux standards NGC7027, MWC349, CRL618, and CRL2688) after recoating M1 were reprocessed with PIIC-QL and the DAFs version in force for the dates indicated above. More accurate flux fractions will be obtained after analysis leading to new DAF sets based on these data and those that can be gathered before the start of scientific operations on August 27.

Likewise, we have reprocessed the same kind of maps for the cited sources only, observed during the runs NIKA2 run 66 (2024/03/5-19; Winter 23; after servo-control upgrading and before painting works) and NIKA2 run 63 (2023/01/10-31; Winter 22; it was the last NIKA2 pool week before servo-control upgrading) to make some comparisons. Comprehensive main beam (MB) retrieved flux fraction plots, containing pointing and in-focus scans of the selected and other flux calibration sources for these runs can be found in the PIIC calibration summary and figures document. In all cases, data is well distributed in elevation.

Plots of main beam retrieved flux fraction [%] vs. MJD [days], UT time of day [h], elevation of the source [deg], and FWHM [arcsec] (as sqrt[FWHM(minor axis)*FWHM(major axis)]) for the recent tests and previous runs are given below.

mb_mjd_n2r67_all.png mb_mjd_n2r66_all.png mb_mjd_n2r63_all.png

mb_ut_n2r67_all.png mb_ut_n2r66_all.png mb_ut_n2r63_all.png

mb_FWHM_n2r67_all.png mb_FWHM_n2r66_all.png mb_FWHM_n2r63_all.png

Source

#Valid scans

Array

MB flux [%]

AP flux [%]

FWHM_min ["]

FWHM_maj ["]

Map RMS [mJy/b]

Uranus

10

2

97.7 ± 2.9

100.3 ± 3.3

17.5 ± 0.2

18.2 ± 0.4

62.4 ± 12.8

1

94.4 ± 6.6

112.1 ± 8.2

11.8 ± 0.4

12.5 ± 0.8

288.6 ± 75.5

3

95.8 ± 6.6

112.0 ± 7.9

11.3 ± 0.3

12.6 ± 0.7

219.1 ± 59.0

Neptune

7

2

95.2 ± 4.5

96.8 ± 4.6

17.7 ± 0.2

18.2 ± 0.3

66.8 ± 8.7

1

91.6 ± 8.0

104.6 ± 9.9

11.9 ± 0.4

12.6 ± 0.7

339.3 ± 59.9

3

93.5 ± 7.9

105.2 ± 9.5

11.7 ± 0.5

12.4 ± 0.7

256.8 ± 45.4

NGC7027

7

2

93.8 ± 6.0

96.1 ± 6.7

18.7 ± 0.3

19.4 ± 0.4

66.6 ± 14.0

1

89.6 ± 12.1

100.5 ± 12.9

14.1 ± 0.6

14.8 ± 1.0

363.9 ± 118.9

3

92.3 ± 12.3

103.8 ± 13.7

13.5 ± 0.5

14.9 ± 1.1

272.1 ± 86.4

Mercury

2

2

41.0 ± 0.3

41.6 ± 0.2

19.0 ± 0.1

20.5 ± 0.1

230.4 ± 14.4

1

33.5 ± 0.6

33.9 ± 0.4

13.8 ± 0.2

16.0 ± 0.2

507.3 ± 6.9

3

33.7 ± 0.5

36.5 ± 0.4

13.2 ± 0.2

17.2 ± 0.3

466.3 ± 20.9

Mars

6

2

97.4 ± 2.6

100.3 ± 2.6

18.1 ± 0.2

18.7 ± 0.3

81.1 ± 9.7

1

95.8 ± 4.3

112.0 ± 6.3

12.6 ± 0.3

13.3 ± 0.4

308.3 ± 65.6

3

95.6 ± 3.3

110.5 ± 5.4

12.0 ± 0.4

13.6 ± 0.5

236.8 ± 50.4

MWC349

5

2

97.7 ± 6.4

100.1 ± 6.6

17.7± 0.3

17.9± 0.2

67.5 ± 17.0

1

85.2 ± 11.3

102.7 ± 12.1

11.5± 0.2

12.3± 0.6

388.0 ± 164.6

3

88.3 ± 11.7

105.7 ± 11.6

11.4± 0.3

11.8± 0.4

279.5 ± 108.3

CRL618

1

2

88.9

91.6

19.1

19.2

51.3

1

105.7

119.3

13.7

14.3

241.4

3

106.0

119.2

13.5

14.7

179.1

CRL2688

5

2

91.1 ± 5.8

93.2 ± 6.4

18.1 ± 0.2

18.4 ± 0.3

64.7 ± 13.2

1

86.4 ± 10.0

100.7 ± 10.5

12.4 ± 0.4

13.5 ± 0.6

359.3 ± 117.3

3

86.4 ± 10.3

100.6 ± 12.3

12.3 ± 0.3

12.9 ± 0.4

258.7 ± 81.5