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Proceedings Paper

Autonomous phase retrieval control for calibration of the Palomar Adaptive Optics system
Author(s): Siddarayappa Bikkannavar; Catherine Ohara; Mitchell Troy
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Paper Abstract

An autonomous wavefront sensing and control software suite (APRC) has been developed as a method to calibrate the internal static errors in the Palomar Adaptive Optics system. An image-based wavefront sensing algorithm, Adaptive Modified Gerchberg-Saxton Phase Retrieval (MGS), provides wavefront error knowledge upon which actuator command voltages are calculated for iterative wavefront control corrections. This automated, precise calibration eliminates non-common path error to significantly reduce AO system internal error to the controllable limit of existing hardware, or can be commanded to prescribed polynomials to facilitate high contrast astronomy. System diagnostics may be performed through analysis of the wavefront result generated by the phase retrieval software.

Paper Details

Date Published: 15 July 2008
PDF: 10 pages
Proc. SPIE 7015, Adaptive Optics Systems, 70155K (15 July 2008); doi: 10.1117/12.790676
Show Author Affiliations
Siddarayappa Bikkannavar, Jet Propulsion Lab. (United States)
Catherine Ohara, Jet Propulsion Lab. (United States)
Mitchell Troy, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)

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