Atmospheric Turbulence Compensation of Point Source Images Using Asynchronous Stochastic Parallel Gradient Descent Technique on AMOS 3.6 m Telescope

Author(s)

Mikhail Vorontsov, University of DaytonFollow
Jim F. Riker, Air Force Research Laboratory
Gary W. Carhart, Army Research Laboratory
Venkata S. Rao Gudimetla, Air Force Research Laboratory
Leonid A. Beresnev, Army Research Laboratory
Thomas Weyrauch, University of DaytonFollow

Document Type

Conference Paper

Publication Date

2007

Publication Source

Proceedings of the 2007 AMOS Conference

Abstract

The Stochastic Parallel Gradient Descent Technique-based Adaptive Optics (SPGD-AO) system described in this presentation does not use a conventional wavefront sensor. It uses a metric signal collected by a single pixel detector placed behind a pinhole in the image plane to drive three deformable mirrors (DMs). The system is designed to compensate the image for turbulence effects. The theory behind this method is described in detail in [1]. However this technique, while widely simulated and tested in the laboratory, was not yet verified in astronomical field site experiments. During the month of May 2007, a series of experiments with SPGD-AO compensation on stars at several elevation angles and turbulence levels were conducted successfully at the US Air Force Maui Optical and Supercomputing Site (AMOS) using the 3.6 m telescope. Some of the results of these experiments are described in this paper. This is the first time SPGD-AO systems have been tested and verified in astronomical field site experiments.

Document Version

Published Version

Comments

Paper is made available for download with the permission of the publisher and the author. Permission documentation is on file.

Copyright

Copyright © 2007, Maui Economic Development Board

Publisher

Maui Economic Development Board

Place of Publication

Maui, HI

eCommons Citation

Vorontsov, Mikhail; Riker, Jim F.; Carhart, Gary W.; Rao Gudimetla, Venkata S.; Beresnev, Leonid A.; and Weyrauch, Thomas, "Atmospheric Turbulence Compensation of Point Source Images Using Asynchronous Stochastic Parallel Gradient Descent Technique on AMOS 3.6 m Telescope" (2007). Electrical and Computer Engineering Faculty Publications. 94.
https://ecommons.udayton.edu/ece_fac_pub/94