Statistics – Applications
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978newsc..78...75h&link_type=abstract
New Scientist, vol. 78, Apr. 13, 1978, p. 75-77.
Statistics
Applications
Light Beams, Mirrors, Optical Equipment, Telescopes, Design Analysis, Helium-Neon Lasers, High Resolution, Laser Applications
Scientific paper
A multiple mirror telescope is described, which uses 6 72-inch mirrors on an altazimuth mounting to obtain the light gathering power of a single 176-inch mirror for one third the cost. In addition, the telescope can be used in the infrared spectrum. Two modes of operation are possible. In the first, six light beams are brought together near the center line, where a combiner produces a single image at what is the equivalent of the Casegrain focus of an ordinary telescope; in the second mode, the secondary mirrors are moved 0.393 inches from the primaries and the light beams are brought together at the central axis. The second mode is considered especially suitable for spectrographic applications. Attention is also given to the structural innovations used to support the mirror configuration, e.g. silica stiffeners in an egg crate pattern, and to a thermal control system which transports hot air 60 m down the mountain before releasing it.
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