Transcript PPT
Science Opportunities with LSST David L. Burke SLAC/KIPAC Sept. 18, 2008 SLUO 2008 Annual Meeting Outline * Precursor R&D Studies – Systematics Limited Science – Existing Data – Simulation and Modelling * Observing Campaigns in Support of LSST Science – Photometric calibration studies * LSST Science Collaborations – LSST Science Book (Edition 2009) Sept. 18, 2008 SLUO 2008 Annual Meeting 20 minute exposure on 8 m Subaru telescope Point spread width 0.52 arcsec (FWHM) 1 arcmin (LSST FOV diameter 200 arcmin) Sept. 18, 2008 SLUO 2008 Annual Meeting Removal of Asymmetric PSF Analysis of Stars in 10% LSST FOV Raw de-trailed PSF corrected Single exposure in 0.65 arcsec seeing <shear> <shear> = 0.04 = 0.07 <shear> <shear> < 0.0001 = 0.000013 How does this extrapolate to full LSST FOV? How does this work in dithered multi-epoch survey? How to combine many background-limited images? Sept. 18, 2008 SLUO 2008 Annual Meeting A moment to reflect … Sept. 18, 2008 SLUO 2008 Annual Meeting It will be a good night … Sept. 18, 2008 SLUO 2008 Annual Meeting A New Technique for Measurement of Atmospheric Transmission for Surveys Observing with Tololo 0.9m and 1.5m Telescopes (5 runs 15 nights in 2007 – 2008) O3 Fit with model SED and computed templates. Molecular (Rayleigh) O2 Water Vapor Demonstrated measurement of atmospheric transmission with sub-% precision. Sept. 18, 2008 SLUO 2008 Annual Meeting Access to LSST Data and the LSST Science Collaborations * All raw data and derived data products will be publicly available as soon as they are generated. – Data Access Centers (a la′ ATLAS Tier 2 Data Center) * Data management to support a wide range of queries. – From a junior high school student looking for images of stars and galaxies, to a large professional science collaboration wanting routine access to the entire data volume. * The LSST Construction Project is not designed or intended to be the organization that delivers LSST science. * To secure LSST science, we have formed semi-autonomous LSST Science Collaborations. Sept. 18, 2008 SLUO 2008 Annual Meeting LSST Science Collaborations Sept. 18, 2008 SLUO 2008 Annual Meeting Roles and Responsibilities of LSST Science Collaborations * Organization and management – spokespersons, membership decisions, science coordinators, publication policies, speaker boards, etc ... * Activities and deliverables of Science Collaborations. – Develop and document LSST science analyses. – Provide input to LSST final design and survey strategy. – Develop and participate in precursor studies. – Deliver first-year commissioning science targets. The present project plan is for “first light” in 2014, and survey and science commissioning in 2015. We expect this to lead to first publications. * LSST Science Book (2009 Edition) Sept. 18, 2008 SLUO 2008 Annual Meeting