Planning the National New Technology Telescope (NNTT). II - Telescope structures

Details Planning the National New Technology Telescope (NNTT). II - Telescope structures Planning the National New Technology Telescope (NNTT). II - Telescope structures

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..628...80b&link_type=abstract

IN: Advanced technology optical telescopes III; Proceedings of the Meeting, Tucson, AZ, Mar. 3-6, 1986 (A87-35201 15-89). Bellin

Physics

Optics

Design Analysis, Infrared Telescopes, Phased Arrays, Planning, Reflecting Telescopes, Azimuth, Cassegrain Optics, Computer Aided Design, Instruments, Mechanical Drives, Optical Equipment

Scientific paper

The NNTT is being designed as an array of four telescopes, each 7.5 meters in primary diameter, on a common mounting, phased in the infra-red, and able to produce 0.25 arcsecond images. Rapid changeover from combined beam to individual telescope operation is required. To accomplish this, a mechanical configuration employing exchangeable top-end optics modules has been designed. Early results of structural analysis are presented. Structural provisions for driving the telescope are discussed. To meet imaging goals, it is concluded that careful structural design plus active position control of the optics is necessary and feasible.

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