Major Astronomical Data Centres and Survey Databases

1) Astrophysics Data System

 – comprehensive bibliographic database, providing access to the body of published astronomical literature, with extensive links to other data centres

2) NASA/IPAC Extragalactic Database – 

- provides extensive compilations of extragalactic astronomical data from many sources, and tools for accessing, combining, and interpreting them.

3) Centre de Donnees astronomiques de Strasbourg – 

- provides extensive compilations of astronomical data from many sources, and tools for accessing, combining, and interpreting them
Includes Aladdin, Simbad, and Vizier

4) Other data centres and databases operated by major research facilities and dedicated survey projects

Sloan Digital Sky Survey - http://www.sdss.org/
A survey that maps one-quarter of the entire sky, determining the positions and absolute brightnesses of more than 100 million celestial objects.

HEASARC - http://heasarc.gsfc.nasa.gov/
High Energy Astrophysics Science Archive Research Center. Provides an archive of data on (and software for analyzing) gamma-ray, X-ray, and extreme ultraviolet observations of cosmic (non-solar) sources.

MAST: Multimission Archive at STScI - http://archive.stsci.edu/
MAST supports a variety of astronomical data archives, with the primary focus on scientifically related data sets in the optical, ultraviolet, and near-infrared parts of the spectrum.

Planetary Data System - http://pds.jpl.nasa.gov/
PDS archives, and distributes digital data from past, and present NASA planetary missions, astronomical observations, and laboratory measurements. Contains data and services, educational resources, and contact information.

ESO, and Space Telescope Science Archive Facilities - http://archive.eso.org/
A joint venture of The European Southern Observatory(ESO), and the Space Telescope European Coordinating Facility(ST-ECF). Contains a shared archive server, services, news, updates, digitized sky images, links, and public datasets.

DSS - The Digitized Sky Survey - http://stdatu.stsci.edu/dss/
Comprises a set of all-sky photographic surveys in E, V, J, R, and N bands conducted with the Palomar, and UK Schmidt telescopes at the Space Telescope Science Institute.

The VLA FIRST Survey - http://sundog.stsci.edu/
Faint images of the radio sky at the wavelength of 20 centimeters.

UK astronomical data-center - http://archive.ast.cam.ac.uk/
Data center that is part of the Cambridge Astronomy Survey Unit providing a selection of data from the UK's ground based telescopes. Includes archives, and catalogs.

Japanese Astronomical Data Center - http://adac.mtk.nao.ac.jp/
Data from the National Astronomical Observatory of Japan. Includes catalog service, data archives, imaging services, and journals.

2dF QSo Redshift Survey (2QZ) - http://www.2dfquasar.org
An Anglo-Australian collaboration surveying 740 square degrees of high-galactic lattiude sky. Contains spectroscopic data release, results, progress report, and input catalogue, survey members, and publications.

Supercosmos Sky Surveys - http://www-wfau.roe.ac.uk/sss/
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.

NVSS Postage Stamp Server - http://www.cv.nrao.edu/nvss/postage.shtml
This postage Stamp server for NRAO/VLA Sky Survey (NVSS) returns radio images of the sky in FITS or JPEG format.

CADC - Canadian Astronomy Data Centre - http://cadcwww.dao.nrc.ca/CADC-homepage.html
Contains digitized sky survey, IUE archive, star catalogs, and links.

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

NOAO Data Archives - http://www.noao.edu/archives.html
Operated by the Association of Universities for Research in Astronomy (AURA), Inc. Includes survey programs data archive, and links to other data collections.