Computer Science – Performance
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21540105k&link_type=abstract
American Astronomical Society, AAS Meeting #215, #401.05; Bulletin of the American Astronomical Society, Vol. 42, p.217
Computer Science
Performance
Scientific paper
The LSST Operations Simulator has been developed to investigate observation scheduling algorithms to effectively address multiple science goals with the single LSST dataset within the limits of the hardware performance and site conditions. The simulator includes sophisticated models of the telescope facility, including the camera and dome, historical weather and seeing distribution derived from many years of site data, and numerous "science programs” that operate within the code to request observations that match particular science criteria. The simulator has continued to develop, adding additional details, configuration parameters, and hardware attributes. A standard report has been created to assist scientists and engineers in evaluating simulated survey results. The simulator has shown that the LSST efficiently observes the available sky with 5.6 million 15-second exposures in 10 years, distributing these observations in pairs temporally, spatially, and among the 6 filters in a variety of ways as driven by the specific science parameters. Simulations show how the baseline cadence successfully addresses LSST science requirements and how some program details can strongly impact scientific investigations. The operation simulator has supported engineering investigations to determine survey performance sensitivity to telescope parameters and is in use by scientists to specifically address optimal approaches to recovering transients and variable star characteristics as well as looking at the effect of dithering each visit on co-added image depth. The operations simulator is helping LSST determine a cadence that achieves a broad range of science within a single wide-fast-deep survey.
Chandrasekharan Shailesh
Cook Kelly
Ivezic Zeljko
Jones Robert L.
Krabbendam Victor
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