Home to some of the world's largest, most innovative, and most productive telescopes. The 4.5-meter equivalent aperture multiple mirror telescope broke the mold for large-aperture telescope design, shattering a paradigm that had reigned for many decades.

The observatories operates 1.0-meter and 2.5-meter telescopes at Las Campanas, Chile. Two 6. 5-meter telescopes are being constructed by the Magellan project collaboration. Telescope time, available to the observatories' scientific staff and visiting investigators, is scheduled once a year, with time allocation applications due in mid-october.

Norwegian Observatory for Variable Astronomy, 350 m above sea level, four 20-40 cm telescopes.

Chartered to ensure the development and maintenance of a leading edge capability in optical and near-infrared interferometry imaging and astrometric technology. Portal to details about most NASA interferometry project.

Joint Astronomy Centre

Western New Mexico University.

An observatory set up to measure geological variations.

Operated by the University of Mississippi, site includes general information about the observatory, including photos and tour information.

A space-borne, cryogenically-cooled infrared observatory. SIRTF is the final element in NASA's Great Observatories Program, and an important scientific and technical cornerstone of the new Astronomical Search for Origins Program. Launch date: 25 August 2003. Estimated lifetime: 2.5 years (minimum); 5+ years (goal).

San Diego State University