: the Canadian Astronomy Data Centre is the official archive center of all CFHT data. CADC is also the archive data center of the raw Megacam images, as well as all calibrated CFHTLS images released by Terapix, including weight and flag map images. CDS
: the Centre de Données astronomiques de Strasbourg (CDS) is an archive data center where all astronomical catalogues produced worldwide can be archived on request. The CDS provides all data mining tools astronomers may need to retrieve catalogs, or to search for any relevant astronomical or bibliographic informations regarding these catalogs.