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A. W. Blain (Institute of Astronomy, University of Cambridge, UK)
Our first glimpse of the dust-enshrouded high-redshift Universe has been provided by ISO and SCUBA. The capabilities of ground-based and air- and space-borne far-infrared and submillimeter instrumentation is increasing significantly in terms of mapping speed, which will enable large, cosmologically representative galaxy surveys to be carried out using SIRTF, SOFIA and FIRST-Herschel. One of the most exciting prospects is improving the spatial resolution of images in these wavebands using large cooled filled aperture telescopes and interferometers, the subject of this session. I will outline some of the potential gains for our understanding of galaxy formation when high-resolution observations are available. Astronomical confusion will cease to limit the depth of surveys, while the internal dynamics, masses and interaction timescales of high-redshift objects can be studied in detail. This work was supported generously by the Raymond & Beverly Sackler Foundation as part of the Foundation's Deep Sky Initiative program at the IoA.