The Palomar-Quest Digital Synoptic Sky Survey: Summary and Initial Results

Details The Palomar-Quest Digital Synoptic Sky Survey: Summary and Initial Results The Palomar-Quest Digital Synoptic Sky Survey: Summary and Initial Results

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21440710d&link_type=abstract

American Astronomical Society, AAS Meeting #214, #407.10; Bulletin of the American Astronomical Society, Vol. 41, p.670

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Scientific paper

The Palomar-Quest (PQ) digital synoptic sky survey was conducted over a period of 5 years, ending in September 2008. The survey is a joint venture between groups at Yale and Caltech, with collaborating groups world-wide. The data were obtained using the Palomar 48-inch Samuel Oschin telescope and QUEST-2 112 CCD camera, with up to 4 distinct filters (Johnson UBRI or Gunn griz systems). Data were taken in the drift scan mode, in 4.6 deg wide strips of a constant declination, typically with 2 passes per night. The survey covered a total area of 15,500 deg2, with up to several tens of passes per location, and with the time baselines ranging from minutes to years. About 15 TB or raw data were collected in the course of about 550 nights (including non-photometric conditions). In addition, a somewhat larger amount of data over a larger number of nights have been taken in the point-and-stare mode, in a single broad-band red filter. The data have been processed using independent pipelines at Yale, Caltech, and LBNL. The survey was fully VO-compliant, and served as a testbed for development of a number of VO-related standards and technologies. All of the data are now in the process of being reprocessed and recalibrated, and will be made fully publicly available. Given the synoptic nature of the survey, most of the initial scientific studies involve exploration of various time-domain phenomena, such as Supernovae, variability of AGN, and high-amplitude variable stars. We have also conducted searches for high-redshift quasars, gravitational lenses, and other projects. We will describe some of the results to date.

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