Median astrometric errors for brighter sources (18–19 mag) compared with Gaia are about 20 milliarcsec (the PS1 astrometric calibration is based on the Gaia DR1 reference frame). The PS1 catalog astrometry and photometry are well calibrated. In total, there are more than 70 billion detections with an average of ~50 epochs for each object (~10 epochs per filter). The catalog includes more than 2.5 billion objects having detections at two or more epochs. The total data volume of the release is approximately 1.6 petabytes, including a 150-terabyte database along with the single-epoch and stacked images. PS1 DR2 is the first release to include the time-dependent photometry, astrometry, and images collected by PS1. The PS1 DR2 archive includes images and catalogs from observations covering three quarters of the sky ( the 3Pi Survey), carried out several times per filter and over a four-year time span. Links to access the PS1 DR2 data as well as the PS1 documentation can be found at. PS1 is the first part of Pan-STARRS to be completed and is the basis for both Data Release 1 (DR1 2016 December 19) and Data Release 2 (DR2). The PS1 project was carried out by a consortium of scientific institutions using a telescope and camera built and operated by the University of Hawaii. And the PS1 data is also being used to develop new high-performance interfaces at MAST that can be applied across all of our mission and catalog holdings. It can serve as faint photometric and astrometric reference data over a large fraction of the sky. It is useful for a wide variety of scientific investigations, ranging from studies of rapidly moving near-Earth objects to the discovery of supernovae and high-redshift quasars. The Pan-STARRS1 (PS1) survey data, hosted at STScI, is both the largest database and the largest image collection in the MAST archive. The second data release from the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) survey was opened to the astronomical community on January 28th, 2019. This image is a Lambert projection with declination –30° at the outer edge, created from the PS1 grz catalog fluxes and source counts. Back to All Articles The Pan-STARRS1 Data Archive
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