The Southern H-ATLAS Regions in Ks-band (SHARKS) is a deep Ks-band imaging survey conducted with the wide-field VIRCAM imager at the VISTA telescope. The project was granted 1200 hours of observing time under the ESO programme 198.A-2006 (PI H. Dannerbauer) as one of seven approved second cycle VISTA Public Surveys. It covers ~300 deg2, including large parts of the South Galactic Plane (SGP), GAMA-12h (G12) and GAMA-15h (G15) fields from the H-ATLAS survey, the largest Herschel program. The survey has been designed to provide the best possible counterpart identification for ∼90% of the sources detected at 0 < z < 3 by H-ATLAS, ASKAP, SKA and LOFAR; to produce a sample of strong lenses for cosmography studies; to study the evolution of the most massive structures in the Universe.
First Data Release from the ESO VISTA Public Survey - Southern H-ATLAS Regions in Ks-band (SHARKS)
SHARKS DR1 consists of calibrated images and single band source catalogues from observations taken between March 2017 and January 2019.It covers a sky area of about 20 deg2, divided in 10 mosaics of ~2 deg2 each. The 10 mosaics are distributed as following: four contiguous mosaics in the SGP-E region, and two unrelated mosaics each in the SGP-W, G15 and G12 fields. The mean depth reaches the expected Ks magnitude of ~22.7 (AB, 5sigma) with a mean seeing of ~1’’. The products are available via the ESO Science Portal or programmatically. More information about the release is available in the related documentation.