Far-infrared survey of the IRIS project

The sensitive all-sky survey in the far-infrared wavelength region will be achieved with a Far-infrared Survey (FIS) instrument of Infra-Red Imaging Surveyor (IRIS) following the IRAS survey. It will be able to detect more than ten times fainter objects with better spatial resolution compared to the IRAS. The final point source catalog, which is expected to include distant ultra-luminous galaxies, starburst galaxies, protoplanetary disks, and so on, is undoubtedly important for the observatory-type infrared satellites, such as, SIRTF and FIRST. The launch of IRIS is scheduled in early 2003.