Astronomical telescopes - A new generation

Details Astronomical telescopes - A new generation Astronomical telescopes - A new generation

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jhatd..10...29p&link_type=abstract

Johns Hopkins APL Technical Digest (ISSN 0270-5214), vol. 10, Jan.-Mar. 1989, p. 29-44.

Astronomy and Astrophysics

Astronomy

Astronomy, Technology Assessment, Telescopes, Active Control, Atmospheric Attenuation, Borosilicate Glass, Mirrors, Structural Design, Temperature Control

Scientific paper

A technology development status and performance capability evaluation is presented for large, state-of-the-art telescopic optics and their ancilliary structural support and control techniques. Mechanical and structural design advancements encompass the use of hexagonally segmented/actively-controlled figure mirrors, the polishing of hexagonal mirror segments under stressed conditions, configurations of multiple-telescope arrays, reliance on altitude-azimuth mounts, the exploration of horizontal spinning liquid mirrors, the casting of glass mirrors in spinning furnaces, and the fabrication of monolithic thin meniscus telescope mirrors.

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