A decade of cost-reduction in very large telescopes - The SST as prototype of special-purpose telescopes

Details A decade of cost-reduction in very large telescopes - The SST as prototype of special-purpose telescopes A decade of cost-reduction in very large telescopes - The SST as prototype of special-purpose telescopes

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.160..123s&link_type=abstract

(Group of Optical and Infrared Astronomers in Japan, Astronomical Society of Japan, Inamori Foundation, et al., International Sy

Physics

Optics

1

Astronomical Spectroscopy, Design Analysis, Telescopes, Aberration, Fiber Optics, Mirrors, Structural Design

Scientific paper

Many design and technical innovations over the past ten or fifteen years have reduced the costs of very large telescopes by nearly an order of magnitude over those of classical designs. Still a further order of magnitude reduction is possible if the telescope is specialized for on-axis spectroscopy, giving up especially the luxuries of wide field, multiple focal positions, and access to all the sky at will. The SST (Spectroscopic Survey Telescope) will use eighty-five 1-m circular mirrors mounted in a steel frame composed of hundreds of interlocking tetrahedrons, keeping a fixed elevation angle of 60 deg with rotation only in azimuth. Using an optical fiber it will feed as much light to spectrographs as can be done by a conventional 8-m telescope, yet has a target basic completion cost of only $6 million.

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