SkyMapper Southern Survey

The SkyMapper Southern Survey (SMSS, Southern Sky Survey) is a survey of all the sky south of the equator by the SkyMapper telescope, including photometry, astrometry, and digital images. Filters include U, V, G, R, I and Z (which are each slightly different than the corresponding filters in the griz and ugriz systems). It is more-or-less a southern counterpart to the original Sloan Digital Sky Survey. As it continues, fainter objects are added. Among the discoveries are SM0313 (SMSS J031300.36-670839.3) the oldest star yet found, based upon its metallicity.