This application creates a new vector catalogue by concatenating the vectors from a list of two or more input catalogues. The output catalogue inherits the WCS and reference diection of the first input catalogue.

IN = LITERAL (Write)

OUT = LITERAL (Write)

• All input catalogues must contain WCS information (i.e. they must have been created using polpack).

• This command does not currently support concatenating catalogues that contain circular polarisation values.

• All input catalogues must use the same units for I, Q and U.

• If the first input catalogue contains variance columns, then all input catalogues must contain variance columns. If the first input catalogue does not contains variance columns, then none of the input catalogues must contain variance columns.