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Table 1

Radio continuum observations of IC 342.

VLA Effelsberg

Frequency (GHz) 8.435 and 8.485 10.55
Wavelength (cm) 3.55 and 3.53 2.84
Bandwidth (MHz) 100 500
Array configuration D
Pointings 3
Observing dates 1991 Mar. 23, 2003 Feb. 24 1994 June–Oct.
Project IDs AB591, AB953 122-93
On-source observing time (h) 13 79
Resolution of final maps 12′′ and 15′′ 68′′ and 90′′
rms noise in I; Q and U (μJy/beam area) 10; 5 and 13; 7 650; 250 and 500; 150

Frequency (GHz) 4.835 and 4.885 4.85
Wavelength (cm) 6.20 and 6.14 6.18
Bandwidth (MHz) 100 500
Array configuration D
Pointings 5
Observing dates 1988 Sep. 23 + 2003 Feb. 28 + 2007 May 20 2000 Apr.–Aug.
Project ID AK201, AB1066, AB1228 18-00
On-source observing time (h) 24 29
Resolution of final maps 15′′ (NW pointing) and 25′′ 147′′ and 180′′
rms noise in I; Q and U (μJy/beam area) 20; 10 and 20; 12 600; 80 and 500; 70
Reference Krause (1993) (NW pointing)

Frequency (GHz) 2.675
Wavelength (cm) 11.2
Bandwidth (MHz) 80
Observing dates 2000 Apr. to Aug.
Project ID 19-00
On-source observing time (h) 24
Resolution of final maps 260′′ and 300′′
rms noise in I; Q and U (μJy/beam area) 1000; 650 and 800; 450

Frequency (GHz) 1.490 1.400
Wavelength (cm) 20.1 21.4
Bandwidth (MHz) 100 40
Array configuration D + C
Pointings 3
Observing date 1984 Jul. 29 and 1986 Dec. 20 + 1987 Mar. 16 2000 Nov. – Dec.
Project ID AK107, AH248 19-00
Net observing time (h) 16 7
Resolution of final maps 15′′ and 25′′ and 51′′ 560′′ and 600′′
rms noise in I; Q and U (μJy/beam area) 30; 20 and 45; 25 and 100; 40 2500; 2000 and 2000; 1500
Reference Krause et al. (1989) (D array, central pointing)

Notes. The Effelsberg observations were performed in scanning mode and hence have no specific pointings. “Resolution” means diameter of the telescope beam at half power.

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