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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 19, Iss. 6 — Mar. 15, 1980
  • pp: 1000–1010

Deflection and stress analysis of a 4.2-m diam primary mirror of an altazimuth-mounted telescope

B. Mack  »View Author Affiliations


Applied Optics, Vol. 19, Issue 6, pp. 1000-1010 (1980)
http://dx.doi.org/10.1364/AO.19.001000


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Abstract

Large finite-element mathematical models are developed to calculate the deformations induced by the supports of a 4.2-m aperture 3.2-focal ratio primary mirror of an optical telescope. It is supported axially on three rings of pneumatic cylinders and radially by a system of transverse level weights, an arrangement only possible in a telescope that uses an altazimuth mounting. The stress distributions in the mirror when lifted by a central lifter and when resting on its axial flotation system are shown. A comparison is made between the results using classical flat-plate theory and the finite-element models.

© 1980 Optical Society of America

History
Original Manuscript: October 15, 1979
Published: March 15, 1980

Citation
B. Mack, "Deflection and stress analysis of a 4.2-m diam primary mirror of an altazimuth-mounted telescope," Appl. Opt. 19, 1000-1010 (1980)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-6-1000

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