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崔辰州 中科院国家天文台 中国虚拟天文台研发团队

Chinese Virtual Observatory. VO is coming. 崔辰州 中科院国家天文台 中国虚拟天文台研发团队. Content. VO Introduction IVOA and its specifications China-VO VO is READY for better science. What is VO. Virtual Sky. V Community. Virtual Telescope. Virtual Instrument. Virtual Observatory (VO). VO concept.

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崔辰州 中科院国家天文台 中国虚拟天文台研发团队

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  1. CAS 2007, GuangZhou

  2. Chinese Virtual Observatory VO is coming... 崔辰州 中科院国家天文台 中国虚拟天文台研发团队

  3. Content • VO Introduction • IVOA and its specifications • China-VO • VO is READY for better science CAS 2007, GuangZhou

  4. What is VO Virtual Sky V Community Virtual Telescope Virtual Instrument Virtual Observatory (VO) CAS 2007, GuangZhou

  5. VO concept • Virtual Observatory (VO) is a data-intensively online astronomical research and education environment, taking advantages of advanced information technologies to achieve seamless, global access to astronomical information. • The power of the World Wide Web is its transparency. It is as if all the documents in the world are inside your PC. The idea of the Virtual Observatory is to achieve the same transparency for astronomical data and other related information (Quinn et al. 2004). CAS 2007, GuangZhou

  6. IVOA in Growth • International Virtual Observatory Alliance (IVOA) • formed in June 2002 • with a mission to facilitate the international coordination and collaboration necessary for the development and deployment of the tools, systems and organizational structures necessary to enable the international utilization of astronomical archives as an integrated and interoperating virtual observatory. CAS 2007, GuangZhou

  7. Science driven, technic enabled VO drivers : science • multi-archive research • Precision Cosmology • The Time Domain • A Panchromatic approach to the Universe… CAS 2007, GuangZhou

  8. Science driven, technic enabled VO drivers : technology • hardware trends • ops, storage, bw : all 1000x/decade • data i/o bw 10x/decade • data avalanche • CCD array • digital sky survey • numerical simulation CAS 2007, GuangZhou

  9. IVOA Protocols key for interoperability

  10. VO framework • agreed standards • inter-operable data collections • inter-operable software modules • no central VO-command CAS 2007, GuangZhou

  11. Standardization • Standard semantic • Standard data format • Standard data models • Standard access protocols • Standard registries CAS 2007, GuangZhou

  12. Protocol List • VOTable • FITS • Cone Search Protocol • Simple Image Access (SIA) Protocol • Simple Spectral Access (SSA) Protocol • SkyNode • Astronomical Data Query Language (ADQL) • Uniform Column Descriptors (UCDs) • Space-Time Coordinates (STC) • IVOA Identifiers • VO Registry • Resource Metadata • Registry Access Protocols • OAI • VOEvent • NESSSI • VOSpace • PLASTIC • Common Execution Architecture • Request-Object Management Environment (ROME) CAS 2007, GuangZhou

  13. China-VO • Chinese Virtual Observatory (China-VO) is the national VO project in China initiated in 2002 by Chinese astronomical community led by National Astronomical Observatories, Chinese Academy of Sciences. • The China-VO aims to provide VO infrastructure for Chinese astronomers and to share astronomical resources in China to the world. • It focuses its research and development on VO science and applications. CAS 2007, GuangZhou

  14. R&D Focuses • China-VO Platform • 中国虚拟天文台系统平台的开发 • Unified Access to On-line Astronomical Resources and Services • 国内外天文研究资源的统一访问 • VO-ready Projects and Facilities • 支持VO的项目与观测设施 • VO-based Astronomical Research Activities • 基于VO的天文研究示范 • VO-based Public Education • 基于VO的天文科普教育 CAS 2007, GuangZhou

  15. VO-enabled LAMOST • VO-enabled • LAMOST data • LAMOST Pipeline CAS 2007, GuangZhou

  16. History and Events • 2001.11 1st VO workshop in China • 2002.7 “China-VO” kicked off • 2002.10 “China-VO” became a member of the IVOA • 2003.6 China-VO system design • 2003.9 the 2nd VO workshop • 2003.11 IVOA Small Projects Meeting • 2004.5 VOFilter 1.0 released • 2004.12 China-VO 2004 • 2005.8 VOFilter 2.0 released • 2005.11 China-VO 2005 • 2006.5 VO-DAS project began • 2006.7 SkyMouse 1.0 released • 2006.12 China-VO 2006 • 2007.5 FitHAS 1.0 released • 2007.5 IVOA interoperability meeting, Beijing • 2007.11 China-VO 2007 CAS 2007, GuangZhou

  17. Small project meeting, Beijing • 26-28 November 2003: Beijing, China • Main topics: • Advantages and disadvantages of small projects. • The role of small projects in the IVOA. • R&D focus of small projects. • Collaboration among small projects and with big VO projects. • Implementation of IVOA standards and infrastructures developed by other VO projects. • 39 participants from Korea, Japan, India, Europe, UK and China (including Taiwan) CAS 2007, GuangZhou

  18. IVOA 2007, Beijing CAS 2007, GuangZhou

  19. Two XSLT transforms • VOFilter • an XML filter for OpenOffice.org Calc to open VOTable files • http://services.china-vo.org/vofilter/ • VOTable2XHTML • a stylesheet to transform VOTable data into HTML/XHTML format • http://services.china-vo.org/votable2xhtml/ CAS 2007, GuangZhou

  20. A Smart On-line Astronomical Information Collector SkyMouse • Touch the sky with your mouse • An intelligent client for VO services • A commodity for astronomers and students CAS 2007, GuangZhou

  21. FitHAS: FITS Header Archiving System • An useful assistant tool for FITS providers and managers • Importing FITS keyword records for one or more FITS files under a given directory into a database by several mouse clicks CAS 2007, GuangZhou

  22. VO Data Access Service (VO-DAS) • An OGSA-DAI based service system to provide unified access to astronomy data, including catalogs, images and spectra. • Goals of VO-DAS • Supporting high volume data query • Interlinking distributed and heterogeneous archives • catalogs, images, spectrums • Providing a software that works for astronomers • An Alpha version of VO-DAS was ready CAS 2007, GuangZhou

  23. VO is READY for better science CAS 2007, GuangZhou

  24. CAS 2007, GuangZhou

  25. NVO Core Services • NVO Registry Portal: Find source catalogs, observation logs, image archives, and other astronomical resources registered with the NVO • DataScope: Discover and Explore Data in the Virtual Observatory • Open SkyQuery: Cross match yoru data with numerous catalogs • NVO Spectrum Services: Search, plot, and retrieve SDSS, 2dF, and other spectra • Web Source Extractor: Upload images to SExtractor and cross-correlate the objects found with selected survey catalogs. CAS 2007, GuangZhou

  26. Aladin V4 • Aladin v4 • an interactive software sky atlas developed by CDS • MultiView, multiProjection • Resampling • Blinking: builds on the fly image sequences (slow movies) • GIF, JPEG and PNG support • Cut graph: along any segment • Cross match algorithm: for better object catalog analysis • Multi-language CAS 2007, GuangZhou

  27. PLASTIC CAS 2007, GuangZhou

  28. VO Science Papers • Discovery of optically faint obscured quasars with Virtual Observatory tools (2004A&A...424..545P) • Luminous AGB stars in nearby galaxies. A study using virtual observatory tools (2006A&A...447...89T) • Candidate Milky Way satellites in the Galactic halo（Liu et al., A&A in press) First science paper from China-VO CAS 2007, GuangZhou

  29. PLASTIC MySpace Helioscope EURO-3D Topcat Astro Runtime VOSpec A new prosperous era for astronomical software and services Web Service VizieR SkyMouse VOEventNet Workflow Specview Simbad SIA It is not a thing Aladin VOPlot Astrogrid Workbench VO is a way of life VOTable Open SkyQuery VisIVO Registry Astroscope SPLAT STILTS Datascope VOSED ADS SSA Yafit

  30. IYA: Astronomy 2009 • The official slogan of the IYA 2009 is: The Universe: Yours to Discover Return your suggestions to: • ccz@bao.ac.cn • 天文名词委邮件列表（http://tech.groups.yahoo.com/group/astro-terms/） CAS 2007, GuangZhou

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