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Proceedings Article

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

[+] Author Affiliations
Tuan N. Truong, Jean C. Shelton, Mitchell Troy, John R. Angione, Rick S. Burruss, Stephen R. Guiwits, Jennifer E. Roberts

Jet Propulsion Lab. (USA)

Antonin H. Bouchez, Richard G. Dekany, John L. Cromer

California Institute of Technology (USA)

Proc. SPIE 7015, Adaptive Optics Systems, 70153I (July 14, 2008); doi:10.1117/12.790457
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From Conference Volume 7015

  • Adaptive Optics Systems
  • Norbert Hubin; Claire E. Max; Peter L. Wizinowich
  • Marseille, France | June 23, 2008

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 μs 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.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Tuan N. Truong ; Antonin H. Bouchez ; Richard G. Dekany ; Jean C. Shelton ; Mitchell Troy, et al.
"Real-time wavefront control for the PALM-3000 high order adaptive optics system", Proc. SPIE 7015, Adaptive Optics Systems, 70153I (July 14, 2008); doi:10.1117/12.790457; http://dx.doi.org/10.1117/12.790457


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