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Proceedings Paper

LBT adaptive secondary preliminary design
Author(s): Daniele Gallieni; Ciro Del Vecchio; Enzo Anaclerio; Paolo G. Lazzarini
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Paper Abstract

We report on the design of the two Gregorian adaptive secondary mirrors of the Large Binocular Telescope. Each adaptive secondary is a Zerodur shell having an external diameter of 911 mm and a thickness of about 1.5 mm. The deformable mirror is controlled by a pattern of 918 electromagnetic actuators. Its shape is referred to a stable ULE back plate by means of capacitive sensors co-located to the actuators pattern. The preliminary design of the system is addressed with particular attention to the reference plate optimization.

Paper Details

Date Published: 7 July 2000
PDF: 8 pages
Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); doi: 10.1117/12.390381
Show Author Affiliations
Daniele Gallieni, ADS International S.r.l. (Italy)
Ciro Del Vecchio, Osservatorio Astrofisico di Arcetri (Italy)
Enzo Anaclerio, ADS International S.r.l. (Italy)
Paolo G. Lazzarini, 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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