Hello Christopher, I'm interested in VO tools also, but most of them seem to be closed source (non-commercial usage only). Do you know of any open-source VO program? Sergio _______________________________________________ Fedora astronomy mailing list Fedora-astronomy-list@xxxxxxxxxx http://fedoraproject.org/wiki/SIGs/Astronomy https://www.redhat.com/mailman/listinfo/fedora-astronomy-list