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VO & Astro-Wise & others

A.Belikov OmegaCEN A.N.Belikov@astro.rug.nl. VO & Astro-Wise & others. VO: what, why and how? VO Services: examples Astro-Wise data in VO VO data: how to use next steps. What will we see?. Virtual Observatory. VO is one. standards education implementation. VO & Grid. Why VO?.

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VO & Astro-Wise & others

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  1. A.Belikov OmegaCEN A.N.Belikov@astro.rug.nl VO & Astro-Wise & others

  2. VO: what, why and how? VO Services: examples Astro-Wise data in VO VO data: how to use next steps What will we see?

  3. Virtual Observatory VO is one • standards • education • implementation

  4. VO & Grid

  5. Why VO? multiband combined surveys (almost) no cast problem

  6. Simplicity of VO • parametrized request to the data • XML for data exchange • XML for data description • wrapped data (images) • simple range request • required parameters for request • required parameters for result

  7. www.ivoa.net

  8. Publishing in VO • put data in a place available for an external user • provide a standard VO service (ConeSearch-STA, SIA, SSA) • register data registry data storage (RDBMS) ODBC http server VO standards end-user interface

  9. Description of resources: XML

  10. VOTable • the general container for the data • XML based • multiple data blocks • flexibility: tables, images, archives

  11. task: image qualifier machine

  12. Hierarchy of resources WENSS OmegaCEN http://vo.astro-wise.org/ConeSearch?FORM=VOTABLE&PROJECT=WENSS http://vo.astro-wise.org/SIAP?FORM=VOTABLE&PROJECT=WENSS dbview.astro-wise.org

  13. Astro-Wise problems: Data interfaces to VO access to AW database fast changes in the data security RDBMS Objects XML DBA, AW user AW user VO user

  14. Astro-Wise problems: Access uniform identifier access by project, instrument as less changes in AW concept as possible VO layer on top of AW more functionality

  15. Registry local publishing registry relational database-like structure python compact: 50 records AW class

  16. VO services ConeSearch, SIA catalogs, images http://vo.astro-wise.org/ConeSearch?FORM=VOTable&PROJECT=ESO-LV http://vo.astro-wise.org/ConeSearch?FORM=VOTable&INSTRUMENT=WFI@2.2m http://vo.astro-wise.org/SIAP?FORM=VOTable&PROJECT=ESO-LV http://vo.astro-wise.org/SIAP?FORM=VOTable&PROJECT=ESO-LV

  17. Registry local dynamic publishing registry

  18. Publishing in Astro-Wise visibility scope context change privileges

  19. Access to VO data VOTable saved on local disk FITS

  20. VO in Astro-Wise: Example

  21. task: astrophysical parameterestimation

  22. VO tools • browsers (Aladin, topcat) • publishing (SAADA) • visualization (ViSIVO) • desktop (Astrogrid) • Plastic • VO key sites http://us-vo.org http://euro-vo.org

  23. NVO • Registry • Datascope • Mosaic service • Grid interface • ConeSearch • SIAP

  24. Tools for publishing • Astrogrid/DSA catalogs, images, spectra • MEX images, spectra • DALToolkit images, spectra • DMMapper catalogs • SAADA catalogs, images RDMS (mySQL, Postgres) http server (apache-tomcat) http://cds.u-strasbg.fr/twikiDCA/bin/view/EuroVODCA/DcaMay2007Workshop

  25. Tools: Plastic

  26. Tools for browsing Workbench catalogs, images, spectra, transient events Aladin, v4 catalogs, images topcat catalogs, visualization

  27. topcat http://www.star.bris.ac.uk/~mbt/topcat/

  28. Aladin FOVs catalogs, images

  29. VO: next steps • standards • ontology • VOSpace • workflow management

  30. VOEvent VOEvent: registry for transient events www.estar.org.uk

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