Physics – Optics
Scientific paper
Aug 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop...92m&link_type=abstract
NOAO Proposal ID #1999B-0092
Physics
Optics
Scientific paper
This proposal is to improve the photometric calibrations of the Digitized Sky Survey scans, i.e., the POSS-I, POSS-II, and Palomar QV surveys in the north and the SERC-ER, SERC-GR, SERC-XS and SERC-S in the south The vignetting function of the Schmidt cameras involved in the surveys have only been determined theoretically, and there is growing evidence that the theoretical functions are inadequate. We propose to empirically determine these functions using the large format CCD detector. These data will be used in the Second Guide Star Catalog (GSC-II), which will contain accurate positions, magnitudes, proper motions, and colors for ~10^9 objects. In addition to statistical programs in stellar and extragalactic astronomy, the GSC-II will be used for observation planning and to support space and ground based telescope operations, (e.g., faint guide stars for adaptive optics systems, specifically including GEMINI, and proper motion corrections for HST guide stars). These observations are particularly critical if we want to use the overlap regions for science purposes and quality assurance.
Garcia Jorge
McLean Brian
Morrison Jane
Spagna Alessandro
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