Future infrared space astronomical instruments.

The EM wavelength range from 1 micron to 1000 microns is covered by IR astronomy. Since the discovery of the unusual IR object NML Cygnus in 1965, a large number of objects has been observed which radiate a substantial amount of flux in the middle and far IR. The four main categories identified include spatially unresolved galactic objects, diffuse galactic objects, the galactic center, and extragalactic objects. Present-day techniques for observation in IR astronomy are discussed together with a variety of instrumental advances now being made in the laboratory.