Abstract :
Astronomers started out using the naked eye some 10,000 years ago, advanced to telescopes in the time of Galileo, and began serious observations in the infrared band of the electromagnetic spectrum only a generation ago. The computer-controlled infrared telescope of the University of Wyoming, located atop Jelm Mountain, was at the time of its installation (November 1977) the largest instrument specifically designed to operate in the 1- to 1000-micron (10,000-angstrom to 1-millimeter) wavelength range.
