Abstract
The proposed VLA Sky Survey (VLASS) comprises two distinct S-band (2--4 GHz) surveys: (1) All-Sky covering the sky north of -40 deg with rms noise 69 microJy/beam = 1.5 K in the 2.5 arcsec beam and (2) Deep covering 10 square deg with rms noise 1.5 microJy/beam = 0.32 K in the 0.8 arcsec beam. This review compares the scientific goals and technical capabilities of the VLASS proposal (2015 Jan 15 version), using new calculations of performance metrics for surveys made with large fractional bandwidths.
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