LBT adaptive secondary preliminary design

Daniele Gallieni; Ciro Del Vecchio; Enzo Anaclerio; Paolo G. Lazzarini

doi:10.1117/12.390381

7 July 2000 LBT adaptive secondary preliminary design

Daniele Gallieni, Ciro Del Vecchio, Enzo Anaclerio, Paolo G. Lazzarini

Proceedings Volume 4007, Adaptive Optical Systems Technology; (2000) https://doi.org/10.1117/12.390381
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

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.

Citation Download Citation

Daniele Gallieni, Ciro Del Vecchio, Enzo Anaclerio, and Paolo G. Lazzarini "LBT adaptive secondary preliminary design", Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); https://doi.org/10.1117/12.390381

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