Due to a disk failure, the US mirrors located at Cfa (Vizier & Simbad) are unavailable for an indefinite time.
Sorry for the inconvenience
[updated - 16 March] all is back to normal
Some large catalogues are temporarilly not available in the VizieR SAAO mirror.
During the maintenance action, please query an other mirror to query these large catalogues.
A new VizieR introduction page is available at http://vizier.u-strasbg.fr/vizier/welcome.
It includes documentations, a simple Catalogues access and other browsing modes (list by hierarchical organization, the last catalogues entered, by popularity or catalogues having spectra, images...)
This page should replace the current main acces page.