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Proceedings Paper

Dedicated flexible electronics for adaptive secondary control
Author(s): Roberto Biasi; Mario Andrighettoni; Armando Riccardi; Valdemaro Biliotti; Luca Fini; Paolo Mantegazza; Daniele Gallieni
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Paper Abstract

In the frame of the Large Binocular Telescope (LBT) adaptive secondary project, we developed a new dedicated electronics that controls the thin shell by means of 672 force actuators and capacitive sensor, while performing also the Real Time Reconstructor (RTR) computations. Within the adaptive optics system, the Slope Computer is also implemented using the same electronics, directly interfaced to the wavefront sensor CCD output by means of built-in fast parallel I/O channels. The system design has been tailored to balance the computational power, in the range of hundreds of Gigaflops, with an effective and time-deterministic real-time communication scheme. Diagnostic and maintenance are performed through an additional, fully independent communication line. Modularity, flexibility and remote in-system reconfigurability make this compact electronic suitable for real time adaptive optics control systems within a wide range of size and complexity, up to several thousands of actuators. In this paper we describe the general hardware and software architecture and the application results of this electronics within the LBT first light adaptive optics system.

Paper Details

Date Published: 25 October 2004
PDF: 12 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.553181
Show Author Affiliations
Roberto Biasi, MICROGATE Srl (Italy)
Mario Andrighettoni, MICROGATE Srl (Italy)
Armando Riccardi, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Valdemaro Biliotti, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Luca Fini, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Paolo Mantegazza, Politecnico di Milano (Italy)
Daniele Gallieni, ADS International Srl (Italy)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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