For example, once in hst, users could directly type the name of the catalogue to. Examples Catalogue cfht, load the CFHT menu. This feature allows to query a catalogue by specifying a center coordinate and a searching radius. Several coordinate systems are available and for some, an equinox can be specified. A small window appears where one can change.
Position is assumed to be in degrees for both longitute and latitude.
S for supergalactic coordinates. Position is assumed to be in degrees for both longitute and latitude. E for ecliptic coordinates. The equinox can also be specified in this case. The default assumed for the equinox is 2000.