MTAF VO Course 04: VO Architecture

Description of the Virtual Observatory architecture, and IVOA documents that make it explicit. Part of the virtual observatory course by Juan de Dios Santander Vela, as imparted for the MTAF (Métodos y Técnicas Avanzadas en Física, Advanced Methods and Techniques in Physics) Master at the University of Granada (UGR).

Transcript

1. VO Architecture Documents Juan de Dios Santander Vela (IAA-CSIC)
2. Overview The Virtual Observatory: Layers & Architecture VO Elements VO Resources
3. VO Architecture
4. VO Architecture VO Infrastructure Views (Apps, Web Portals…) Services (Data, Computing…) Registry User
5. VO Architecture
6. VO Architecture
7. VO Architecture VO Infrastructure Views (Apps, Web Portals…) Services (Data, Computing…) Registry User
8. VO Architecture <interacts with> User VO App VO App Web Browser in VO Portal User's Machine PLASTIC/SAMP messages OAI-PMH Registry servers SIAP SSAP SCS HTTP Image servers Spectra servers Catalogue servers Traditional web servers VO Web Services Internet Local file storage Local file access VO data access protocols (Data Access Layer), and other web services' access protocols Service kind Access protocol
9. VO Architecture
10. VO Architecture
11. VO Architecture
12. VO Architecture
13. VO Architecture
14. VO Architecture
15. Resource Registry Resource Metadata Resource Identifier (IVO) VO Resource Registry Interface VOData Service Standard RegExt Application RegExt SimpleDAL RegExt
16. VO API XML Manipulation (SAX, EXPAT, DOM…) VO Application FITS Manipulation (cfitsio, nom.tam.fits, PyFITS…) VOTABLE Data Model Mapping Spectral Energy Distribution Other application-specific APIs Operating System Services VO-specific API REST: DAL protocols (SIAP, SSAP, SCS) SOAP: OAI-PMH (Registry) XML-RPC: PLASTIC, SAMP Web-Services API
17. VO API get coordinates for object name get info for object show object coordinates obtain data available for object in suitable services obtain relevant services given coordinates and other selection criteria query relevant services fulfilling criteria display retrieved data in suitable form
23. VO API get coordinates for object name get info for object show object coordinates obtain data available for object in suitable services obtain relevant services given coordinates and other selection criteria query relevant services fulfilling criteria display retrieved data in suitable form WEB SERVICES
24. References & Links IVOA Architecture (IVOA Note 2010-11-23) Integrating Radio Astronomical Archives and Legacy Tools in the VO Framework, Ph.D. Thesis, Chapter 2