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NASA NTRS · 20150008614

Real-Time Wavefront Control for the PALM-3000 High Order Adaptive Optics System

Truong, Tuan N.·Bouchez, Antonin H.·Dekany, Richard G.·Guiwits, Stephen R.·Roberts, Jennifer E.·Troy, Mitchell
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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. The architecture enables full-matrix reconstruction of the wavefront at up to 2 KHz with latency under 250 us for the PALM-3000 adaptive optics systems, a state-of-the-art upgrade on the 5.1 meter Hale Telescope that consists of a 64 x 64 subaperture Shack-Hartmann wavefront sensor and a 3368 active actuator high order deformable mirror in series with a 241 active actuator tweeter DM. The architecture can easily scale up to support much larger AO systems at higher rates and lower latency.

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Truong, Tuan N., Bouchez, Antonin H., Dekany, Richard G., Guiwits, Stephen R., Roberts, Jennifer E., Troy, Mitchell. 2008-06-23. Real-Time Wavefront Control for the PALM-3000 High Order Adaptive Optics System. https://ntrs.nasa.gov/citations/20150008614

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