Spectroscopic survey telescope design. I - Primary mirror structure and support

Details Spectroscopic survey telescope design. I - Primary mirror structure and support Spectroscopic survey telescope design. I - Primary mirror structure and support

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988opten..27..769r&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 27, Sept. 1988, p. 769-774.

Computer Science

Performance

1

Astronomical Spectroscopy, Mirrors, Phased Arrays, Telescopes, Finite Element Method, Prototypes, Thermal Expansion, Tracking (Position)

Scientific paper

The present design for a spectroscopic survey telescope uses a spherical primary mirror whose figure requires that a secondary focus assembly be driven at the tracking rate in an attitude normal to the spherical focal surface, while the telescope, being tilted at a predetermined angular zenith distance, need only be 'set' (and clamped) occasionally in azimuth. The spherical primary mirror segments are configured to an identical radius-of-curvature and supported on a fully triangulated stainless steel space frame; a structural analysis using finite elements indicates that the expected static performance of both the individual segments and the overall space frame present reasonable goals for current engineering practice.

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