It is a pleasure for us to thank our collegues of the ISOPHOT Instrument Dedicated Team in Vilspa and the ISOPHOT Data Centre in Heidelberg for their extreme engagement in the scientific validation and calibration of the instrument. We also thank the ISO Project Scientist Martin Kessler for granting special observing time for the OLP validation. For literature search and IRAS photometry we used the NASA/IPAC Extragalactic Data Base (NED) and the NASA Astrophysics Data System (ADS). We thank the referee for constructive comments.
© European Southern Observatory (ESO) 1997
Online publication: April 28, 1998