Mount Wilson Observatory
The main nighttime telescopes of the Mount Wilson Observatory are a 60-inch (1.5-m) reflector, built in 1908, and the famous 100-inch (2.5-m) Hooker Telescope, built in 1917. Two solar observatories, the 60-foot tower telescope (operated by University of Southern California) and the 150-foot tower telescope (operated by the University of California at Los Angeles), maintain long-term exploration of the magnetic activity behavior of the Sun. There are also two interferometers on the site: the Infrared Spatial Interferometer (ISI, operated by the University of California at Berkeley) and the NRL Optical Interferometer.
Related category OBSERVATORIES AND TELESCOPES
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