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Gijs Verdoes Kleijn Edwin Valentijn Marjolein Cuppen for the Astro-WISE consortium
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What is Astro-WISE?: An information accumulator for eScience Massive datasets Data centric Federated Paradigm for Citizen eScience? Astronomers and public collaborating in one system
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Goals Where it started: data avalanches from Wide-field imaging surveys: OmegaCAM/VST Needles in haystacks Haystacks Share: federate distributed resources (hardware + science teams) All-in-one information system: publishing, archiving, calibration, post- calibration analysis Concepts: the paradigm Data model in object model Extreme backwards-chaining All All I/O through database: VirtualTelescopePlaat met vereenvoudiging Implementation Python as glue Try yourself:
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UKIDSS workshop 2007 VIRCAM@VISTA 0.6 sq.deg. NIR camera 16 2kx2k detectors 0.35” pixels Science verification phase OmegaCAM @VST 1sq.deg. Opt. camera 32 2kx4k detectors 0.21” pixels Commissioning mid 2010 ESO Public Imaging Surveys VIKING~250nights z, Y, J, H, K KIDS~500 nights 1500 sq.deg. u g r i
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–OmegaCAM 24% (~2500 GB) –VIRCAM 72% –(~7500 GB) –All Current Paranal –Instruments 4% (433.2 GB) Paranal Monthly Data Rates 2007 statistics –Courtesy Mark Neeser
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Science drivers Needles in haystacks high-z QSOs (6.4<z<7.2) Extreme Galactic White Dwarfs (Rare) AGNs The unanticipated Haystacks: Dark matter distribution: weak lensing Dark energy Evolution of galaxy clusters Unexpected Needles are easier than haystacks
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Facilitate (un)foreseen uses of calibrated and raw Tera/Petabyte data sets by global pools of collaborators and resources This requires enabling changes at any time in: 1. Physical parameters (e.g., instrument/atmosphere) 2. Improved algorithms 3. Improved insight in 1. or 2. Requires a single integrated information system Survey monitoring Quality control User tuned research Archiving (raw+final) Dissemminating results Calibration Integrated Information system
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Pool via federation into a single system Distributed science teams Distributed storage, compute and database resources Peer-to-peer network
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TARGET diagram Data model in object model OOP (python), inheritance, attribute persistency Full backwards-chaining of dependencies The philosophy that drives how we store information
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Extreme data lineage
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Astro-WISE information system data centric architecture All data beyond pixel data is Metadata all pixel data data servers all Metadata database all I/O to database Compute clusters / GRIDs Graphical User Interfaces (Web- services) All components scalable
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OmegaCEN review 2008 Astro-WISE - Virtual Survey Telescope CPUs DATA SERVERS: Images: Calibration & science Raw & final DATABASE LINKS METADATA images CATALOGS Contains “ALL input/output” Pipeline Methods/Algorithms In on-line repository Python (wrapped)
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XLDB -Lyon Aug 2009 www.astro-wise.org
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+ MegaCAM, LBC, ISAAC, LOFAR, SDSS DR7, 2MASS, USNO…
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Web services Target processor
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Quality view
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Both final and raw products accessible GUI can be fully web services no local installation needed to use it can be installed everywhere with off-the-shelf hardware Objects are linked, all bits are traced: on-the fly re-processing Annotation record building Built–in workflow Easy publishing via Virtual Observatory and webservices Own compute GRID operational A federated integrated-system: Naturally serves global collaborative projects Scalable: image server/database/compute GRID resources can grow via federation Mydb environment operational for individual research Quick scripting: many tasks are “5 Line Scripts” Fully user tunable – own provided algorithms/scripts allowed Python: existing software can be wrapped (implemented for Sextractor, swarp, being implemented for GALPHOT, GALFIT) ( )
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Discovery of the exotic: gravitational lenses, mergers,… SNe, transients, Satellites asteroids Survey Quality Control -visual inspection KIDS: 3yr manpower. -object masking -astrometry
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Open-up massive datasets to the public Playing -> exploring -> science A single environment for public and scientist Feeling at home in the Universe on spaceship Earth
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Open-up massive datasets to the public Continum: playing -> exploring -> science A single environment for public and scientist Feeling at home in the Universe on spaceship Earth www.astro-wise.org www.rug.nl/TarGet
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TASK 24 www.rug.nl/ TarGet 2009-13 32M
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