Supercosmos Sky Surveys
Provides images, and catalogues of the southern sky in three colours. Includes access to digitised images, and the data derived from SuperCOSMOS scans of photographic Schmidt survey plates.
www-wfau.roe.ac.uk Details

The Aladin Sky Atlas
Provides an interactive sky atlas allowing users to visualize digitized images of any part of the sky. Includes astronomical catalogs, personal user data files, and interactive access to related data from the Simbad database, and Vizier service.
aladin.u-strasbg.fr Details

The ELODIE archive
Hosts more than 16000 Echelle spectra of 2000 objects from the ELODIE spectrograph at OHP observatory.
atlas.obs-hp.fr Details

The Munich Astro Archive
Archives astronomical data. Includes star dates, comets, glossary, astronomical catalogs, calendar, meteor events, and astromaps.
www.maa.mhn.de Details

The New UKIRT Archive
The United Kingdom Infrared Telescope Archive. Offers search tool, and operator's log.
archive.ast.cam.ac.uk Details

The UTR-2 Catalogue
Provides a low frequency sky survey of discrete sources obtained in the Institute of Radio Astronomy of the Ukrainian National Academy of Sciences. Images from the UTR-2 radio telescope at a number of the low frequencies used in contemporary radio astronomy within the range from 10 to 25 MHz.
www.ira.kharkov.ua Details

The UnOfficial Chandra Data Archive Search
Provides a search tool for the Chandra X-Ray Observatory secondary data products archive.
cfa-www.harvard.edu Details

The VLA FIRST Survey
Faint images of the radio sky at the wavelength of 20 centimeters.
sundog.stsci.edu Details

The Web Nebulae
Features images of Nebulae organized by Bill Arnett. Includes glossary, image list, and sources.
www.seds.org Details