Physics – Optics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apopt..19.2670m&link_type=abstract
(Conference on Optical and Infrared Telescopes for the 1990s, Tucson, Ariz., Jan. 7-12, 1980.) Applied Optics, vol. 19, Aug. 15,
Physics
Optics
1
Cost Analysis, Design Analysis, Telescopes, Apertures, Low Cost, Low Weight, Mirrors, Optical Properties
Scientific paper
A lightweight 4-m telescope with a 6400 kg primary mirror of f/1.5 was developed at a cost comparable to a conventional 2.2-m telescope. A central column supports the secondary mirror, thus eliminating the need for any structures larger than the diameter of the primary mirror. The elevation axis is behind the primary mirror and cell, thus requiring an altazimuth mounting with a counterweight. The Cassegrain focal position remains fixed regardless of the elevation of the telescope. A single secondary mirror enables operation at the HEDS, Cassegrain, Nasmyth, and SYZ coude foci, two of which require field correctors.
Baker Meinel Aden
Chunhua P.
Ningshen H.
Pettit Meinel Marjorie
Qiqian H.
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