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Chenzhou CUI National Astronomical Observatories, Chinese Academy of Sciences

The Chinese Virtual Observatory. 引领天文学网络化协同工作. Chenzhou CUI National Astronomical Observatories, Chinese Academy of Sciences. Content. VO ABC IVOA & China-VO LAMOST telescope e-Science platform for the LAMOST. What is VO. Virtual Sky. V Community. Virtual Telescope. Virtual Instrument.

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Chenzhou CUI National Astronomical Observatories, Chinese Academy of Sciences

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  1. The Chinese Virtual Observatory 引领天文学网络化协同工作 Chenzhou CUI National Astronomical Observatories, Chinese Academy of Sciences

  2. Content • VO ABC • IVOA & China-VO • LAMOST telescope • e-Science platform for the LAMOST Jan 25, 2009, CCNU

  3. What is VO Virtual Sky V Community Virtual Telescope Virtual Instrument Virtual Observatory (VO) Jan 25, 2009, CCNU

  4. My definition 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. 虚拟天文台是通过先进的信息技术将全球范围内的研究资源无缝透明连接在一起形成的数据密集型网络化天文研究与科普教育平台。 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). Jan 25, 2009, CCNU

  5. World Wide Telescope Chandra Whipple g-ray Oak Ridge 1.2m CO MMT SIRTF Hubble VLA Sub-mm array Antartica sub-mm Magellan 6.5m Courtesy of Dr. Jim Gray Jan 25, 2009, CCNU

  6. Science driven, technic enabled VO drivers : science • multi-archive research • Precision Cosmology • The Time Domain • A Panchromatic approach to the Universe… Jan 25, 2009, CCNU

  7. 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 Jan 25, 2009, CCNU

  8. International Virtual Observatory Alliance

  9. IVOA • International Virtual Observatory Alliance (IVOA) • formed in June 2002 • Developing interoperability standards • Enhancing communication • Fostering collaboration • Cultivating VO awareness and usage by theastronomical community • Coordinate, prioritise and validate theimplementation of standards, tools and services Jan 25, 2009, CCNU

  10. Jan 25, 2009, CCNU

  11. VO framework • agreed standards • inter-operable data collections • inter-operable software modules • no central VO-command Jan 25, 2009, CCNU

  12. IVOA Protocols key for interoperability

  13. IVOA Documents Jan 25, 2009, CCNU

  14. Jan 25, 2009, CCNU

  15. Chinese Virtual Observatory

  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 Jan 25, 2009, CCNU

  17. China-VO 2004, Wuhan, Hubei Jan 25, 2009, CCNU

  18. IVOA 2007, Beijing Jan 25, 2009, CCNU

  19. China-VO 2009 (Chongqing) • Date: Nov. 26-28, 2009 • Theme: New Round of VO Jan 25, 2009, CCNU

  20. 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/ Jan 25, 2009, CCNU

  21. 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 Jan 25, 2009, CCNU

  22. 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 Jan 25, 2009, CCNU

  23. 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 Jan 25, 2009, CCNU

  24. VO Tools (Aladin, TOPCAT) PLASTIC Local DB MATLAB Database Toolbox VOTables Java Libraries AstroBox MATLAB VO-DAS Client VO-DAS AstroBox • A plug-in package for MATLAB to provide an astronomical data mining application service, supporting VO protocols and tools. • A high-level data analysis environment supporting: • PLASTIC • VOTable • Local DB • VO-DAS client • Astronomical algorithms Jan 25, 2009, CCNU

  25. First Science Paper from China-VO • Candidate Milky Way satellites in the Galactic halo（Liu et al., 2008, A&A) • SDSS DR5 photometric data were searched for new Milky Way companions or substructures in the Galactic halo. • Data analysis procedures were based on the VO-DAS. • Five candidates are identified as over-dense faint stellar sources that have color-magnitude diagrams similar to those of known globular clusters, or dwarf spherical galaxies. Jan 25, 2009, CCNU

  26. China-VO @ IYA2009 Jan 25, 2009, CCNU

  27. Jan 25, 2009, CCNU

  28. Building the cyber-infrastructure Leading the e-Science Goals of the China-VO for Astronomy in China Jan 25, 2009, CCNU

  29. Infrastructure • Hardware • Data center • HPC • Storage • Software • Organization • NAOC CIC • Collaboration • TJU • CCNU • MSR • KMUST • … Jan 25, 2009, CCNU

  30. 中国天文开始进入大科学时代 40-50m 射电望远镜 CSTAR 云南2.4m HXMT WSO SHAO 65m FAST 超导成像频谱仪 21CMA AST3

  31. 国家重大科学工程 LAMOST天文望远镜

  32. 2009年－－国际天文年 • 400年来，人类制造的天文望远镜口径越来越大，从地面发展到空间，从光学波段发展到全部电磁波段，促进了天文学的巨大发展 • 伽利略、开普勒：折射望远镜 • 牛顿：反射望远镜 • 8-10米光学望远镜 • 施密特：折反射望远镜（大视场） • LAMOST: 主动反射施密特系统

  33. 望远镜的特点 口径越大 探测越深 视场小 一次观测到的目标较少：个体类研究－深入细致的观测 视场大 一次观测到的目标越多：巡天类研究－宇宙天体的普查 LAMOST做到既大视场又大口径 ——中国天文学家的创新设计理念

  34. 主动反射施密特望远镜 4000光纤定位系统 MA镜: 24 4000光纤 MB镜: 37 16光谱仪 32CCD相机

  35. 大视场兼备大口径的突破 • 英国剑桥大学天文研究所Willstrop教授（1994年）

  36. 2008年10月16日 LAMOST落成

  37. 2008年12月，获得M31星系中发射线天体的光谱 仙女座大星云（M31星系） 距离约256万光年

  38. 2009年4月，单次观测获得3600余条光谱（>97%） 4号光谱仪 5号光谱仪

  39. 2009年6月，通过国家验收 4号光谱仪 5号光谱仪

  40. VO-enabled LAMOST

  41. LAMOST网络化协同工作平台

  42. LAMOST Database System Portal Command Line Interface VO Tools VO 服务层 光谱访问 图像访问 表格访问 锥形检索 SAMP 交叉证认 文件访问 其他服务 程序接口 个性服务 用户接口 数据库 / 数据文件 访问层 TMT LSST LAMOST FAST …… CSTAR …… SDSS GSC

  43. On-line Collaboration

  44. Jan 25, 2009, CCNU

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