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GOOGLE SKY demo

Explore how China-Virtual Observatory leverages advanced technology to provide seamless global access to astronomical data, enhancing research and education in the field. Learn about IVOA protocols, key technologies, and the development of China-VO projects and facilities.

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GOOGLE SKY demo

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  1. GOOGLE SKY demo China-VO 2007, GuangZhou

  2. Chinese Virtual Observatory 不断走向实用的虚拟天文台 崔辰州 中国虚拟天文台研发团队

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

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

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

  9. VO framework • agreed standards • inter-operable data collections • inter-operable software modules • no central VO-command - its not a thing - its a way of life China-VO 2007, GuangZhou

  10. What is needed ? • global standards • well funded data centres • working data services • infrastructure software • VO aware client tools • VO aware data mining services China-VO 2007, GuangZhou

  11. IVOA Protocols key for interoperability

  12. Standardization • Standard semantic • Standard data format • Standard data models • Standard access protocols • Standard registries China-VO 2007, GuangZhou

  13. 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) China-VO 2007, GuangZhou

  14. 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. China-VO 2007, GuangZhou

  15. Development of China-VO • Advanced research platform for Chinese astronomers • Import data and technologies from IVOA partners • Share Chinese datasets with international astronomers • Bring up a group of VO-oriented astronomers, engineers and students • Education outreach China-VO 2007, GuangZhou

  16. 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 China-VO 2007, GuangZhou

  17. VO-enabled LAMOST Large sky Area Multi-Object fibre Spectroscopy Telescope Clear aperture: 4m Field of view:  5° Focal plane:  1.75m Focal length:20m Number of fibers:4000 Spectral ranges:370～900nm Spectral resolution:1～ 0.25nm Sky coverage:Declination -10  to+90 A meridian reflecting Schmidt telescope China-VO 2007, GuangZhou

  18. LAMOST today • 2007 • June: Small system • 6Ma, 8 Mb sub-mirrors  aperture ~ 2m LAMOST • Small focal plane + 250 fibers • One spectrograph +2 CCDs  LRS • 2008 • Optic (Ma 24 + Mb 37) • Instruments (4000 fibers, 16 spectrograph, 32 CCDs)  Complete system ~ 4m LAMOST • 2009: commission period • 2010-2015: regular spectroscopic survey China-VO 2007, GuangZhou

  19. VO-enabled LAMOST • VO-enabled • LAMOST data • LAMOST Spectral Analysis Pipeline China-VO 2007, GuangZhou

  20. 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 China-VO 2007, GuangZhou

  21. China-VO Meeting (2001, Beijing) VO is important, we should involve… China-VO 2007, GuangZhou

  22. China-VO in 2002 • “China-VO” initiated • China-VO PI (Yongheng Zhao) attended the VO conference in Garching, ESO • Dr. Jim Gray (NVO, Microsoft Research) visited the China-VO • China-VO became a member of the IVOA China-VO 2007, GuangZhou

  23. China-VO 2003, Beijing China-VO 2007, GuangZhou

  24. China-VO 2004, Wuhan, Hubei China-VO 2007, GuangZhou

  25. China-VO 2005 (Weihai, Shandong) China-VO 2007, GuangZhou

  26. China-VO 2006 (Guilin, Guangxi) China-VO 2007, GuangZhou

  27. 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) China-VO 2007, GuangZhou

  28. Brief Review China-VO 2007, GuangZhou

  29. IVOA 2007, Beijing China-VO 2007, GuangZhou

  30. Topology China-VO 2007, GuangZhou

  31. 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/ China-VO 2007, GuangZhou

  32. 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 China-VO 2007, GuangZhou

  33. 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 China-VO 2007, GuangZhou

  34. 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 • OGSA-DAI Supported Asynchronous Data Access Service • OGSA-DAI is a middleware product which supports the exposure of data resources, such as relational or XML databases, on to grids. • Work with Globus Toolkit 4 • WSRF interface • Good wrapper for variant databases • Asynchronous query supported • Available for large dataset China-VO 2007, GuangZhou

  35. Status • An Alpha version of VO-DAS was ready • Query Workflow • Synchronous Query • Asynchronous Query • Asynchronous Query on multiple DataNodes China-VO 2007, GuangZhou

  36. VO is ready for better science • A new prosperous era is coming for astronomical software and application development China-VO 2007, GuangZhou

  37. China-VO 2007, GuangZhou

  38. 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 China-VO 2007, GuangZhou

  39. 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. China-VO 2007, GuangZhou

  40. China-VO 2007, GuangZhou

  41. China-VO 2007, GuangZhou

  42. First Science Paper from VO • A&A 424, 545-559 (2004) Discovery of optically faint obscured quasars with Virtual Observatory tools • The AVO science team discovered 31 previously undetected powerful supermassive black holes in the so-called GOODS (Great Observatories Origins Deep Survey) fields. China-VO 2007, GuangZhou

  43. Second Science Paper from VO • Accepted by A&A • Luminous AGB stars in nearby galaxies: A study using Virtual Observatory tools • Searching for very luminous AGB stars with J − Ks > 1.5 mag and H − Ks > 0.4 mag in the LMC, SMC, M31, and M33 from 2MASS data. China-VO 2007, GuangZhou

  44. PLASTIC MySpace Helioscope EURO-3D Topcat Astro Runtime VOSpec Web Service VizieR VOEventNet Workflow Specview VO Tools And Services 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 Courtesy of Evanthia Hatziminaoglou, ESO - Garching

  45. The Chinese VIRTUAL OBSERVATORY Q & A ? www. .org China-VO 2007, GuangZhou

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