Simbad Astronomical Database
ATCA Data Archival
Astronomical Data Center
HST Archival Data
GRS-data
NRAO Data Archive System
Accesses to Astronomical atalogues
Dictionary of Nomenclatureof Celestial Objects
NASA/IPAC Extragalactic Database
The Sloan Digital Sky Survey
Canadian Astronomy Data Centre
Aladin Sky Atlas
VizieR Service
database for Astronomical Spectroscopy
