Dedicated flexible electronics for adaptive secondary control

Details Dedicated flexible electronics for adaptive secondary control Dedicated flexible electronics for adaptive secondary control

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490.1502b&link_type=abstract

Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI

Physics

Optics

Scientific paper

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.

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