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Proceedings Paper

Numerical simulations of the LBT adaptive secondary mirror
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Paper Abstract

In this paper we describe the design of the deformable mirror of the Large Binocular Telescope adaptive secondary unit. Starting from the optical design, a numerical model of the ultra-thin, aspherical glass shell, accommodating the 918 magnets on the selected actuator geometry, has been run. As a result, we can evaluate the response of this crucial component of the telescope optics with great accuracy. The DM is analyzed from the mechanical standpoint -- gravity deformations, wavefront residue, residue of low-order Zernike aberrations, corrections of magnetic interactions -- in order to compute the optical performances in the most demanding operational circumstances.

Paper Details

Date Published: 7 July 2000
PDF: 8 pages
Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); doi: 10.1117/12.390391
Show Author Affiliations
Ciro Del Vecchio, Osservatorio Astrofisico di Arcetri (Italy)
Daniele Gallieni, ADS International S.r.L. (Italy)

Published in SPIE Proceedings Vol. 4007:
Adaptive Optical Systems Technology
Peter L. Wizinowich, Editor(s)

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