VIRTUAL OBSERVATORIES

International Virtual Observatory Alliance (IVOA)

Astrogrid (UK Virtual Observatory)
US National Virtual Observatory
Korean Virtual Observatory
Russian Virtual Observatory
Japanese Virtual Observatory
Hungarian Virtual Observatory
German Astrophysical Virtual Observatory
Virtual Observatory France
Armenian Virtual Observatory
Italian Data Grid for Astrophysical Research
Spanish Virtual Observatory
Canadian Virtual Observatory
Virtual Observatory India
China Virtual Observatory
Euro-VO (Astrophysical Virtual Observatory)
Australian Virtual Observatory

ASTRONOMICAL DATA CENTRES

Centre de Donnees astronomiques de Strasbourg (CDS)
NASA Astronomical Data Center, Greenbelt (ADC)
Centre for Astronomical Data, Moscow (CAD)
Astronomical Data Analysis Center, Tokyo (ADAC)
Beijing Astronomical Data Center (BDC)
Astronomical Data Centre, Pune
Astronomical Data Centre, La Plata
European Southern Observatory, Garching (ESO)
Infrared Processing and Analysis Center (IPAC)
Canadian Astronomy Data Centre, Victoria (CADC)