AIPS 1: INFILE 'AB628_4 ' It should be INFILE = 'AB628_' with NFILES=3. This allows aips to read many files predicting the name of each. The default area for your aips had better be the area containing this file or an environment variable will also be needed - e.g. INFILE = 'MYFITS:AB628_' ERic Greisen