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Potential R&D focuses for China-VO

Chinese Virtual Observatory. Potential R&D focuses for China-VO. Chenzhou Cui National Astronomical Observatory of China. Outlines. IVOA emphasis Pro and con for small VO projects China-VO R&D focuses Integration Data Access Services VO-enabled telescope VO-enabled LAMOST Education.

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Potential R&D focuses for China-VO

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  1. Chinese Virtual Observatory Potential R&D focuses for China-VO Chenzhou Cui National Astronomical Observatory of China IVOA Small Projects Meeting 2003

  2. Outlines • IVOA emphasis • Pro and con for small VO projects • China-VO R&D focuses • Integration • Data Access Services • VO-enabled telescope • VO-enabled LAMOST • Education IVOA Small Projects Meeting 2003

  3. Outlines • IVOA emphasis • Pro and con for small VO projects • China-VO R&D focuses • Integration • Data Access Services • VO-enabled telescope • VO-enabled LAMOST • Education IVOA Small Projects Meeting 2003

  4. IVOA emphasis Mission: • to facilitate coordination of development • to foster interoperability IVOA Small Projects Meeting 2003

  5. IVOA emphasis • Working Groups • Resource RegistryData Modeling • Content Description (UCD)Data Access Layer • VOTableVO Query Language • Grid & Web ServicesStandards & Processes Explore technologies Develop standards Recommend best practices IVOA Small Projects Meeting 2003

  6. IVOA emphasis • Most popular topics: • Interoperability • Resource Registry • Data Model • Web&Grid Technology • VOQL • VOTable • DAL Source from: Statistics for IVOA Web IVOA Small Projects Meeting 2003

  7. NVO • Building the Framework for the National Virtual Observatory • from: Paul Messina, Alex Szalay • NVO is not about building portals and applications, but rather emphasizes building standards and infrastructure. • from: Ray Plante IVOA Small Projects Meeting 2003

  8. The NVO Environment • Many resources, distributed curation • Thousands of individually accessible resources: • Catalogs, observatory archives, surveys, spectra, services • Tens of data-providing centers • NASA data centers, observatories, universities, research groups • Must build on the existing infrastructure • Data providers already support services using… • Databases, CGI, metadata, …. • Vast majority of data is publicly accessible • Delivered over HTTP • Buy-in cost is a critical issue • Incremental compliance • Toolkits are helpful from: Ray Plante IVOA Small Projects Meeting 2003

  9. Enabling Standards and Technologies • Data Formats • FITS– an existing standard for astronomical images & tables • VOTable– an XML schema for transmitting astronomical tables • Data Access Protocols • Cone Search– for searching catalogs by sky position • Simple Image Access (SIA)– to search for/create images based on sky position • HTTP Get Queries return VOTable documents prototypes! • Currently in development within the IVOA: • SkyNode– more generalized approach to catalog searching • VO Registries– for publishing and discovering resources • Web Services • Grid Technologies • Chimera & Pegasus – virtual data catalog and workflow management • Replica Catalog Service – built-in caching of results on the grid • Condor from: Ray Plante IVOA Small Projects Meeting 2003

  10. AstroGrid • The end goal of the project (phase B) is to produce software which will enable the creation of a working, grid−enabled Virtual Observatory (VO) based around key UK astronomical data centres. • (AstroGrid Red Book) IVOA Small Projects Meeting 2003

  11. AstroGrid The work breaks into a few major strands: • Continuing research and development; • Developing the software infrastructure that will make a VO possible; • Developing user tools to make it possible to do science with AstroGrid. • portals, visualization tools, analysis tools, data mining algorithms, workflow editors, and so on • from: AstroGrid Red Book IVOA Small Projects Meeting 2003

  12. AstroGrid top−level practical goals • to develop … standards for data, metadata, data exchange and provenance • to develop a software infrastructure for data services • to establish a physical grid of resources shared by AstroGrid and key data centres • to construct and maintain an AstroGrid Service and Resource Registry • to implement a working Virtual Observatory system based around key UK databases and of real scientific use to astronomers • to provide a user interface to that VO system • to provide, either by construction or by adaptation, a set of science user tools to work with that VO system • to establish a leading position for the UK in VO work • from: AstroGrid Red Book IVOA Small Projects Meeting 2003

  13. Outlines • IVOA emphasis • Pro and con for small VO projects • China-VO R&D focuses • Integration • Data Access Services • VO-enabled telescope • VO-enabled LAMOST • Education IVOA Small Projects Meeting 2003

  14. Outlines • IVOA emphasis • Pro and con for small VO projects • China-VO R&D focuses • Integration • Data Access Services • VO-enabled telescope • VO-enabled LAMOST • Education IVOA Small Projects Meeting 2003

  15. Disadvantages Limited: • Astronomy Research Level • Astronomical Resources • Data, Instruments and Telescopes • Technology • Software Develop, Database, Network • Funding • Is limited for us all IVOA Small Projects Meeting 2003

  16. Advantages • Great interests from native astronomers and IT experts • No historical backpacks • existing infrastructure, data service, CGI-scripts, etc. • No large gaps among various projects • XML, Web Services, Grid, etc. IVOA Small Projects Meeting 2003

  17. Outlines • IVOA emphasis • Pro and con for small VO projects • China-VO R&D focuses • Integration • Data Access Services • VO-enabled telescope • VO-enabled LAMOST • Education IVOA Small Projects Meeting 2003

  18. Outlines • IVOA emphasis • Pro and con for small VO projects • China-VO R&D focuses • Integration • Data Access Services • VO-enabled telescope • VO-enabled LAMOST • Education IVOA Small Projects Meeting 2003

  19. China-VO R&D focuses Unlike NVO and AstroGrid, as a small VO project, • China-VO will emphasize on applications and portals. • But we will take part in the developments of IVOA standards and infrastructure actively. IVOA Small Projects Meeting 2003

  20. Integration existing Software Packages, Toolkits, Libraries • Astronomical Utilities • Image Manipulation • Math and Statistics • Plotting the more simple I/O and simple user interface the more easier to integrate IRAF, MIDAS, AIPS, … need much user interaction almost impossible for integration IVOA Small Projects Meeting 2003

  21. Astronomical Utilities • Coordinate conversion • equatorial (RA, Dec) to horizon (alt, azimuth) coordinates • Date conversion • calendar date to Julian Date • Units conversion • Magnitude to flux • Ephemeris calculation • Sun set/rise, eclipse IVOA Small Projects Meeting 2003

  22. Image Manipulation • Format conversion • Jpg, gif, tiff,fits,… • Image edit • Rotate, resize, filter,… • image correlation, image aligning • FITS image manipulation • (C)FITSIO IVOA Small Projects Meeting 2003

  23. data analysis simple math operations differentiating integrating statistics Fast Fourier Transform (FFT) (de)convolution data smoothing data filtering Peak picking data sorting curve fitting linear fitting nonlinear fitting Math and Statistics IVOA Small Projects Meeting 2003

  24. Plotting • 1D • spectrum, time series, … • 2D • Line, Scatter, bar, column, pie, … • histogram, polar, vector,… • 3D • bar, scatter, surface, contour, … IVOA Small Projects Meeting 2003

  25. Data Access Services • IVOA DAL and Interoperability standards • VOTable, SIA, UCD, VOQL, etc. • easy access to national and international astronomical datasets • especially important for countries absent of large observation instruments IVOA Small Projects Meeting 2003

  26. Major data resources in China National • BATC 15 color sky survey: 360 GB • Huairou & Yunnan solar observation:700 GB • Miyun meter-wave sky survey: 5GB IVOA Small Projects Meeting 2003

  27. Major data resources in China International SDSS DR1? IVOA Small Projects Meeting 2003

  28. VO-enabled telescope Current projects: • NAOC 2.16m telescope • Yunnan observatory 2.4m telescope • public internet observatory wide-field camera, 35cm, 60cm • Tsinghua Univ. 40cm public telescope NAOC 2.16 m telescope IVOA Small Projects Meeting 2003

  29. VO-enabled LAMOST • VO-enabled • LAMOST data • LAMOST telescope • LAMOST Spectral Analysis Pipeline IVOA Small Projects Meeting 2003

  30. VO-enabled LAMOST IVOA Small Projects Meeting 2003

  31. VO-based Education • international education resource access • bilingual Skymap • English-Chinese astronomical dictionary • … • China-VO education portal IVOA Small Projects Meeting 2003

  32. Thank You Q & A ? www. .org IVOA Small Projects Meeting 2003

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