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Exploration • • • • • 2 Wavelength Angular resolution Area surveyed Depth Time resolution • Large aspheric optics • Microelectronics • Software 3 What if we could go faint fast over the entire visible sky? • Unprecedented Planetary Probes NEO > 250m, KBO, Comets, debris • Probe Dark Energy & Dark Matter • Open the Time Window Faint Transients (GRB, SN, …?) Variability studies: stars, galaxies… Requires: reach 24 V mag in ~10 sec over ~5-10 sq deg field 4 8.4m diameter primary mirror 7 square degree field of view >15000 Gbytes per night Real-time analysis Celestial Cinematography 5 6 7 LSST Data Flow Model ~600 MB/sec peak, 15 sec cycle Calib. insertion Stacked Sum “Static” DB Working Flat Readout and Flatfield Image Difference ~ 18 TB/night Boxcar Flat Gen Variability Detection 103 – 104/night?, 1-10 GB? Y Known Obj? Update LC DB 10-100GBytes/night? Update Calib DB Classifier 8 N Alert, export: • photometry • flags • Light Curve... LSST 2017: 15 Petabyte time-tagged imaging database 1 TB photometric catalog 9 Petabytes on spinning disks Now LSST • Not a problem in 2008 • Multi-site disk farms • Co-located computing 10 A Challenge: Software • • • • • • • Key Project Pipelines Robust Automated Variability Discrimination Automated Variability Classification Software adaptive optics – PSF control Detection Efficiency Calibration Lossy mining algorithms Data visualization We can start now, and are doing so. 11 Key Science Pipelines • • • • • • 12 multi-taps & realtime calibration defined data products data quality verification duplicate pipelines for testing industrial model build on SLOAN, DLS, S-MACHO Data Quality Assessment 13 Challenge: Craft the database and tools to enable answers to unanticipated questions 14 LSST Precursor Projects • SDSS • Deep Lens Survey • Super MACHO • RAPTOR 80-member LSST Collaboration has members from all these projects 15 The Large Synoptic Survey Telescope – Massively Parallel Astronomy DATA PUBLIC Simultaneously address: 16 Solar System Probes: Earth-crossing asteroids, Comets, TNOs Space assets & space junk to 1 cm Dark matter/dark energy via weak lensing Dark matter/dark energy via supernovae Galactic Structure encompassing local group Dense astrometry over 30000 sq.deg -> deep proper motion science Gamma Ray Bursts and transients to high z Gravitational mlensing Variable stars/galaxies QSO time delays vs z Transients to 25 mag: the unknown 5-band 27 mag photometric survey Unprecedented many Pbyte time-tagged photometric database