VizieR Online Data Catalog: NGC 891 LOFAR and AMI maps (Mulcahy+, 2018)

The LOFAR observations of NGC 891 were done in interleaved mode, switching between scans on the calibrator 3C48 (at RA(J2000)=01:34:41.3, Dec(J2000)=+33:09:35and the target NGC 891. A total of 44 stations were used for this observation, of which 32 were core stations and 12 were remote stations.

The AMI (Arcminute Microkelvin Imager) consists of two radio arrays, the Small Array (SA) and the Large Array (LA), located at the Mullard Radio Astronomy Observatory (Cambridge, UK).

The SA data were taken as a single pointing with interleaved observations of the phase calibrator J0222+4302 and 3C286 used as a flux density and bandpass calibrator. The LA data were taken as a mosaic, consisting of seven pointings arranged on a hexagonal raster centred on NGC 891. Individual pointings were cycled between the pointing centers every 60s, switching to the phase calibrator J0222+4302 every 10min for 2min.

(2 data files).