Calibration of LSST Instrument and Data

Details Calibration of LSST Instrument and Data Calibration of LSST Instrument and Data

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21113723b&link_type=abstract

American Astronomical Society, AAS Meeting #211, #137.23; Bulletin of the American Astronomical Society, Vol. 39, p.982

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Science studies made by the Large Synoptic Survey Telescope will reach systematic limits in nearly all cases. Requirements for photometric measurements accurate to better than 1% are particularly challenging. Advantage will be taken of the rapid multi-epoch cadence of the LSST survey to use stars to calibrate stability and uniformity of astrometric and photometric data. A new technique using a tunable laser is being developed to calibrate the wavelength dependence of the total telescope and camera system throughput and response. Spectroscopic measurements of atmospheric extinction and emission will be made continuously to allow the broad-band optical flux observed in the instrument to be corrected to flux at the top of the atmosphere. Repeated observations of standard stars in the accumulated survey will be combined with instrumental and atmospheric throughput measurements to calibrate data releases. Observational studies with existing telescopes and simulations are underway to validate and optimize this strategy.

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