Rapid ASKAP Continuum Survey. VII. 943.5MHz

SPICE- RACS DR2 is derived from the third low-band epoch of the Rapid ASKAP Continuum Survey (RACS-low3) and covers the entire sky from the South celestial pole up to a declination of +49{deg} ; approximately 87.5% of the celestial sphere. We produce "cutout" spectral cubes in Stokes I, Q, U around 4 million radio sources and extract spectra towards 5 million radio components.

Across our observed band of 799.5 to 1087.5MHz we find an rms noise of ~200uJy/PSF, an angular resolution of ~15", and residual wide-field instrumental polarisation on the order of 0.1%. After de-duplication, our polarisation catalogue contains the detection of 2.5x10^5^ (3.4x10^5^) Faraday rotation measures (RM) for components with a linearly polarised signal above 8{sigma} (6{sigma}). This places SPICE-RACS DR2 as the largest single RM catalogue ever produced by nearly an order of magnitude; the number of RMs in our catalogue alone is ~5 times larger than every previous RM catalogue combined.