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Paper: Calibration of the Pan-STARRS 3π Survey
Volume: 364, The Future of Photometric, Spectrophotometric, and Polarimetric Standardization
Page: 153
Authors: Magnier, E; the Pan-STARRS Team
Abstract: The Pan-STARRS project will begin a large-scale survey in early 2007 using the prototype telescope PS1 currently being commissioned on the summit of Haleakala. A major goal of this survey is to provide a calibration reference grid, the Pan-STARRS Astrometric & Photometric (AP) Reference Catalog, for eventual observations from the full Pan-STARRS 4 telescope system, which will perform a survey beginning in the 2009 timeframe. The precision requirements for internal relative photometry for this reference catalog are an ambitious 0.m010 for the riz filters, only slightly relaxed for the g and y filters. We have been working with the Canada-France-Hawaii Telescope (CFHT) Legacy Survey / MegaPrime photometric standards team to guide the design of the photometric calibration procedures and to assess the likely sources of systematic errors.

The current photometry from the CFHT MegaPrime standard-star analysis demonstrates relative photometric residuals of better than 0.m010, with systematic errors close to the Pan-STARRS goals. The Pan-STARRS 3π Survey will implement the lessons learned from CFHT and make use of additional external atmospheric transparency measurements, as well as an innovative flatfield screen, in an attempt to push the photometric accuracy below the 10 millimagnitude level. We discuss the plans for the Pan-STARRS PS1 Survey photometry calibration. The resulting photometric reference catalog will provide a highly accurate and dense reference system for future science observations in the entire 3π steradians north of declination −30.

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