CAS 2007, GuangZhou

Chinese Virtual ObservatoryVO is coming...

CAS 2007, GuangZhou

ContentVO IntroductionIVOA and its specificationsChina-VOVO is READY for better science

CAS 2007, GuangZhou

What is VO

CAS 2007, GuangZhou

VO conceptVirtual 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

IVOA in GrowthInternational 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

Science driven, technic enabledVO drivers : sciencemulti-archive researchPrecision CosmologyThe Time DomainA Panchromatic approach to the Universe

CAS 2007, GuangZhou

Science driven, technic enabledhardware trendsops, storage, bw : all 1000x/decadedata i/o bw 10x/decadedata avalancheCCD arraydigital sky surveynumerical simulationVO drivers : technology

CAS 2007, GuangZhou

IVOA Protocolskey for interoperability

CAS 2007, GuangZhou

VO frameworkagreed standardsinter-operable data collectionsinter-operable software modules no central VO-command

CAS 2007, GuangZhou

StandardizationStandard semanticStandard data formatStandard data models Standard access protocolsStandard registries

CAS 2007, GuangZhou

Protocol ListVOTableFITSCone Search ProtocolSimple Image Access (SIA) Protocol Simple Spectral Access (SSA) Protocol SkyNodeAstronomical Data Query Language (ADQL)Uniform Column Descriptors (UCDs)Space-Time Coordinates (STC)IVOA IdentifiersVO RegistryResource MetadataRegistry Access ProtocolsOAIVOEventNESSSIVOSpacePLASTICCommon Execution ArchitectureRequest-Object Management Environment (ROME)

CAS 2007, GuangZhou

China-VOChinese 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

R&D Focuses China-VO Platform Unified Access to On-line Astronomical Resources and Services VO-ready Projects and Facilities VOVO-based Astronomical Research Activities VOVO-based Public Education VO

CAS 2007, GuangZhou

VO-enabled LAMOSTVO-enabledLAMOST dataLAMOST Pipeline

CAS 2007, GuangZhou

2001.11 1st VO workshop in China2002.7 China-VO kicked off2002.10 China-VO became a member of the IVOA2003.6 China-VO system design2003.9 the 2nd VO workshop2003.11 IVOA Small Projects Meeting2004.5 VOFilter 1.0 released2004.12 China-VO 20042005.8 VOFilter 2.0 released2005.11 China-VO 20052006.5 VO-DAS project began2006.7 SkyMouse 1.0 released2006.12 China-VO 20062007.5 FitHAS 1.0 released2007.5 IVOA interoperability meeting, Beijing2007.11 China-VO 2007History and Events

CAS 2007, GuangZhou

Small project meeting, Beijing26-28 November 2003: Beijing, ChinaMain 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

IVOA 2007, Beijing

CAS 2007, GuangZhou

Two XSLT transformsVOFilteran XML filter for OpenOffice.org Calc to open VOTable fileshttp://services.china-vo.org/vofilter/VOTable2XHTMLa stylesheet to transform VOTable data into HTML/XHTML formathttp://services.china-vo.org/votable2xhtml/

CAS 2007, GuangZhou

Touch the sky with your mouseAn intelligent client for VO servicesA commodity for astronomers and studentsA Smart On-line Astronomical Information Collector

CAS 2007, GuangZhou

FitHAS: FITS Header Archiving System An useful assistant tool for FITS providers and managersImporting FITS keyword records for one or more FITS files under a given directory into a database by several mouse clicks

CAS 2007, GuangZhou

FITS files

FITS files

User Interface Layer

Wizard

Core Transaction Layer

Database

FITS files

Header analysis

Metadata Mapping and Archiving

Database controller

Header viewer

Database browser

Config-uration

Configuration files

Archive moniter

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-DASSupporting high volume data queryInterlinking distributed and heterogeneous archivescatalogs, images, spectrumsProviding a software that works for astronomersAn Alpha version of VO-DAS was ready

CAS 2007, GuangZhou

VO is READY for better science

CAS 2007, GuangZhou

CAS 2007, GuangZhou

NVO Core ServicesNVO Registry Portal: Find source catalogs, observation logs, image archives, and other astronomical resources registered with the NVODataScope: Discover and Explore Data in the Virtual ObservatoryOpen SkyQuery: Cross match yoru data with numerous catalogsNVO Spectrum Services: Search, plot, and retrieve SDSS, 2dF, and other spectraWeb Source Extractor: Upload images to SExtractor and cross-correlate the objects found with selected survey catalogs.

CAS 2007, GuangZhou

Aladin V4Aladin v4an interactive software sky atlas developed by CDSMultiView, multiProjectionResamplingBlinking: builds on the fly image sequences (slow movies)GIF, JPEG and PNG supportCut graph: along any segmentCross match algorithm: for better object catalog analysisMulti-language

CAS 2007, GuangZhou

CAS 2007, GuangZhou

VO Science PapersDiscovery 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 haloLiu et al., A&A in press)First science paper from China-VO

CAS 2007, GuangZhou

A new prosperous era for astronomical software and servicesAstrogrid WorkbenchAladinVizieRSimbadDatascopeAstroscopeTopcatVOSpecVOPlotSPLATSTILTSEURO-3DSpecviewVisIVOVOSEDADSHelioscopeYafitRegistryPLASTICWeb ServiceSIASSAVOTableAstro RuntimeMySpaceWorkflowOpen SkyQueryVOEventNetIt is not a thing

CAS 2007, GuangZhou

IYA: Astronomy 2009The official slogan of the IYA 2009 is: The Universe: Yours to Discover

Return your suggestions to:ccz@bao.ac.cnhttp://tech.groups.yahoo.com/group/astro-terms/

CAS 2007, GuangZhou