Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21346030a&link_type=abstract
American Astronomical Society, AAS Meeting #213, #460.30; Bulletin of the American Astronomical Society, Vol. 41, p.372
Astronomy and Astrophysics
Astronomy
Scientific paper
Once a year after commissioning is complete the LSST Data Management system will process the entire collection of data taken by the survey to date to produce a new Data Release. This is a set of data products intended for scientific analysis which has been generated with a uniform set of algorithms and processing parameters and passes strict quality controls. Each Data Release will be preserved intact so that any derived results can be regenerated at will. The processing that generates a Data Release divides into an image processing pass and a catalog processing pass. Image processing itself is done in two main passes: differencing every science image from a template image, followed by detection and measurement of sources (Nightly Reduction Mode), and simultaneous processing of stacks of science images that cover a particular region of sky (Stack Processing Mode). Together, these populate the science database with a variety of static and time domain measures of object properties. The following catalog pass over this data performs final astrometric and photometric calibration, orbit determination for solar system objects, and object classification.
Axelrod Tim S.
Becker Andrew
Becla Jacek
Burke Daniel
Connolly Amy
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