CAT can access catalogues held in several different formats: FITS tables, STL lists and Tab-Separated Tables. The restrictions and peculiarities associated with each of these formats are described below.
CAT determines the type of a catalogue from the `file type' component of the name of the file holding the catalogue. The file types for the various formats are included in the descriptions below. If a file name is specified without a file type then it is assumed to be a FITS table of file type .FIT.
CAT [1ex