ASKAP’s rapid survey speed, enabled by the wide-field Phased Array
Feeds, is being used to conduct the Rapid ASKAP Continuum Survey
(RACS). The resulting catalogue will be used as the basis for a new
sky model for the Southern hemisphere, providing a faster way of
calibrating the array in the future. A tiling scheme that uses a 6x6
square arrangement of beams, is moved through strips of constant
declination, dwelling on each field for 15 minutes. Observations have
been made between 744 and 1032 MHz with 1 MHz frequency
resolution. Roughly 900 fields were required to cover the sky South of
+40 Dec and to date we have observed down to -70 Dec as shown in the
image above. Each circle represents a field
centre from the survey plan. Shaded circles have been
observed. Coloured circles were observed in the most recent
scheduling block. The Sun and Moon are also shown.
More details are given in this month's
ASKAP Commissioning Update.