Real-time wavefront control for the PALM-3000 high order adaptive optics system

Tuan N. Truong; Antonin H. Bouchez; Richard G. Dekany; Jean C. Shelton; Mitchell Troy; John R. Angione; Rick S. Burruss; John L. Cromer; Stephen R. Guiwits; Jennifer E. Roberts

doi:10.1117/12.790457

14 July 2008 Real-time wavefront control for the PALM-3000 high order adaptive optics system

Tuan N. Truong, Antonin H. Bouchez, Richard G. Dekany, Jean C. Shelton, Mitchell Troy, John R. Angione, Rick S. Burruss, John L. Cromer, Stephen R. Guiwits, Jennifer E. Roberts

Author Affiliations +

Proceedings Volume 7015, Adaptive Optics Systems; 70153I (2008) https://doi.org/10.1117/12.790457
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

We present a cost-effective scalable real-time wavefront control architecture based on off-the-shelf graphics processing units hosted in an ultra-low latency, high-bandwidth interconnect PC cluster environment composed of modules written in the component-oriented language of nesC. We demonstrate the architecture is capable of supporting the most computation and memory intensive wavefront reconstruction method (vector-matrix-multiply) at frame rates up to 2 KHz with latency under 250 &mgr;s for the PALM-3000 adaptive optics systems, a state-of-the-art upgrade on the 5.1 meter Hale Telescope that consists of a 64x64 subaperture Shack-Hartmann wavefront sensor and a 3368 active actuator high order deformable mirror in series with a 349 actuator "woofer" DM. This architecture can easily scale up to support larger AO systems at higher rates and lower latency.

Citation Download Citation

Tuan N. Truong, Antonin H. Bouchez, Richard G. Dekany, Jean C. Shelton, Mitchell Troy, John R. Angione, Rick S. Burruss, John L. Cromer, Stephen R. Guiwits, and Jennifer E. Roberts "Real-time wavefront control for the PALM-3000 high order adaptive optics system", Proc. SPIE 7015, Adaptive Optics Systems, 70153I (14 July 2008); https://doi.org/10.1117/12.790457

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