Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991sciam.265..112p&link_type=abstract
Scientific American (ISSN 0036-8733), vol. 265, Nov. 1991, p. 112-116, 118, 120-123.
Astronomy and Astrophysics
Astronomy
Astronomical Observatories, Product Development, Reflecting Telescopes, Technology Assessment, Adaptive Control, Mirrors, Seeing (Astronomy)
Scientific paper
The paper discusses a new generation of telescopes that combine huge light-collecting mirrors and advance optical technology, promising a giant leap in astronomers' ability to explore the universe. One such telescope is the 10-m Keck Telescope atop Mauna Kea, the most prominent feature of which is the segmented-mirror design. The segmented mirrors incorporate many small thin mirrors that are easier to build and to support than a single large mirror. Motorized controllers keep the segments aligned so that they form a single large mirror. Other segmented-mirror telescopes include the 8-m Spectroscopic Survey Telescopes at the Pennsylvania State University and the University of Texas, and the proposed 12-m German Large Telescope. A different type of multiple-mirror telescopes is represented by the 6.5-m Multiple Mirror Telescope of the University of Arizona and the proposed Columbus Project and Magellan Project, and the proposed National Optical Astronomy Observatory telescopes, which are all based on honeycomb mirrors.
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