1. 11/26/2003IVOA Small Projects Meeting 20031 Potential R&D focuses for China-VO Chenzhou Cui National Astronomical Observatory of China Chinese Virtual Observatory

2. 11/26/2003IVOA Small Projects Meeting 20032 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

3. 11/26/2003IVOA Small Projects Meeting 20033 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

4. 11/26/2003IVOA Small Projects Meeting 20034 IVOA emphasis Mission: to facilitate coordination of development to foster interoperability

5. 11/26/2003IVOA Small Projects Meeting 20035 IVOA emphasis Working Groups Resource Registry Data ModelingResource RegistryData Modeling Content Description (UCD) Data Access LayerContent Description (UCD)Data Access Layer VOTable VO Query LanguageVOTableVO Query Language Grid & Web Services Standards & ProcessesGrid & Web ServicesStandards & Processes Explore technologies Develop standards Recommend best practices

6. 11/26/2003IVOA Small Projects Meeting 20036 IVOA emphasis Most popular topics: –Interoperability –Resource Registry –Data Model –Web&Grid Technology –VOQL –VOTable –DAL Source from: Statistics for IVOA WebStatistics for IVOA Web

7. 11/26/2003IVOA Small Projects Meeting 20037 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

8. 11/26/2003IVOA Small Projects Meeting 20038 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

9. 11/26/2003IVOA Small Projects Meeting 20039 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

10. 11/26/2003IVOA Small Projects Meeting 200310 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)

11. 11/26/2003IVOA Small Projects Meeting 200311 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

12. 11/26/2003IVOA Small Projects Meeting 200312 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

13. 11/26/2003IVOA Small Projects Meeting 200313 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

14. 11/26/2003IVOA Small Projects Meeting 200314 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

15. 11/26/2003IVOA Small Projects Meeting 200315 Disadvantages Limited: Astronomy Research Level Astronomical Resources –Data, Instruments and Telescopes Technology –Software Develop, Database, Network Funding –Is limited for us all

16. 11/26/2003IVOA Small Projects Meeting 200316 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.

17. 11/26/2003IVOA Small Projects Meeting 200317 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

18. 11/26/2003IVOA Small Projects Meeting 200318 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

19. 11/26/2003IVOA Small Projects Meeting 200319 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.

20. 11/26/2003IVOA Small Projects Meeting 200320 Integration existing Software Packages, Toolkits, Libraries –Astronomical Utilities –Image Manipulation –Math and Statistics –Plotting IRAF, MIDAS, AIPS, … need much user interaction almost impossible for integration the more simple I/O and simple user interface the more easier to integrate

21. 11/26/2003IVOA Small Projects Meeting 200321 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

22. 11/26/2003IVOA Small Projects Meeting 200322 Image Manipulation Format conversion –Jpg, gif, tiff,fits,… Image edit –Rotate, resize, filter,… image correlation, image aligning FITS image manipulation –(C)FITSIO

23. 11/26/2003IVOA Small Projects Meeting 200323 Math and Statistics 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

24. 11/26/2003IVOA Small Projects Meeting 200324 Plotting 1D –spectrum, time series, … 2D –Line, Scatter, bar, column, pie, … –histogram, polar, vector,… 3D –bar, scatter, surface, contour, …

25. 11/26/2003IVOA Small Projects Meeting 200325 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

26. 11/26/2003IVOA Small Projects Meeting 200326 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

27. 11/26/2003IVOA Small Projects Meeting 200327 Major data resources in China International CDS/ADC Catalog 100G 2MASS catalogs40G 2dF7G ROSAT38G DSS I80G DSS II620G SDSS EDR60G Einstein X-ray Survey5G ADS Mirror400G SDSS DR1?

28. 11/26/2003IVOA Small Projects Meeting 200328 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

29. 11/26/2003IVOA Small Projects Meeting 200329 VO-enabled LAMOST VO-enabled –LAMOST data –LAMOST telescope –LAMOST Spectral Analysis Pipeline

30. 11/26/2003IVOA Small Projects Meeting 200330 VO-enabled LAMOST

31. 11/26/2003IVOA Small Projects Meeting 200331 VO-based Education international education resource access bilingual Skymap English-Chinese astronomical dictionary … China-VO education portal

32. 11/26/2003IVOA Small Projects Meeting 200332 Q & A ? www..org Thank You