UV_FIELDS /CENTER

        [CLEAN\]UV_FIELDS RaVar DecVar [Unit] /CENTER Ra Dec /FILE File

    Specify  the  reference  center  (Pointing and Phase) of the Mosaic UV table
    with Fields ID.  In this case, RaVar and DecVar are true Ra and Dec  (angles
    in the specified Unit), not Offsets.  The Offsets are computed from the pro-
    jection information in the UV table.

    Ra and Dec should be in usual sexagesimal notation.

    Without  /CENTER,  RaVar  and DecVar are Offsets from the Phase and Pointing
    center of the Mosaic, as given in the UV data header,  unless  Unit  is  AB-
    SOLUTE.