A technique for the optical analysis of deformed telescope mirrors

Details A technique for the optical analysis of deformed telescope mirrors A technique for the optical analysis of deformed telescope mirrors

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..628..504b&link_type=abstract

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

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Computation

Finite Element Method, Mirrors, Nastran, Optical Measurement, Solar Optical Telescope, Surface Properties, Computational Grids, Deformation, Diffraction Patterns, Error Analysis, Spline Functions, Thermal Expansion

Scientific paper

The NASTRAN-ACCOS V programs' interface merges structural and optical analysis capabilities in order to characterize the performance of the NASA Goddard Space Flight Center's Solar Optical Telescope primary mirror, which has a large diameter/thickness ratio. The first step in the optical analysis is to use NASTRAN's FEM to model the primary mirror, simulating any distortions due to gravitation, thermal gradients, and coefficient of thermal expansion nonuniformities. NASTRAN outputs are then converted into an ACCOS V-acceptable form; ACCOS V generates the deformed optical surface on the basis of these inputs, and imaging qualities can be determined.

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