VizieR Online Data Catalog: 74MHz VLA Low-frequency Sky Survey Redux (VLSSr) (Lane+, 2014)

The VLSSr reprocessed all of the data from the original VLSS project. The observations were made between 2001 and 2007, under VLA observing programs AP397, AP441, AP452, and AP509. The sky was divided into a roughly hexagonal grid of 523 pointing centres, at a spacing of 8.6°. The bandwidth used was 1.56MHz centred at 73.8MHz. Fields in the range -10<DEC<80° were observed in the VLA B configuration, while those at DEC<-10° and DEC>80° were observed in the BnA configuration to compensate for beam elongation at low elevations. Further details of the observational setup are given in Cohen et al. (VLSS; 2007, Cat. VIII/79).

The final catalogue contains 92964 entries. Of these, roughly 3 per cent have no match in the NVSS within 60 arcsec of the fitted position. However many unmatched sources are actually components of larger sources which may be fit differently in the two catalogues.

The global rms position error is 3.3 arcsec in RA and 3.5 arcsec in declination.

(2 data files).