Photometric Calibrators for the Second-Generation Palomar Sky Surveys

Details Photometric Calibrators for the Second-Generation Palomar Sky Surveys Photometric Calibrators for the Second-Generation Palomar Sky Surveys

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006noao.prop...60m&link_type=abstract

NOAO Proposal ID #2006B-0060

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The latest GSC-II release (GSC2.3) includes positions, proper motions, photographic photometry (blue J, red F and near-IR N), and star/non-star classification of nearly 1 billion objects to a limiting magnitude of J~eq 22 and F~eq 20.5. Besides its obvious applications for telescope operations and space missions planning, the all-sky astro-photometric properties of GSC-II make it a highly valuable tool for a wide range of astrophysical investigations and data mining. A major effort toward the construction of such a catalog has been the collection of ad-hoc photometric sequences (a total of ~ 1780) for the linearization of the density-to-intensity response of each survey plate; this is summarized by the realization of the CCD-based, photometric catalogue GSPC-II. More details on the GSC- II and GSPC-II, and their releases, can bee found at www- gsss.stsci.edu/Catalogs/Catalogs.htm With this proposal we are addressing the remaining 100 fields still lacking photometric calibrators. Eighty of them were targets of a previous KPNO proposal (ID 2005B-0139), but did not get proper data due to uncooperative weather; most of the twenty southern sequences need re- observations because they are of poor photometric quality.

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