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Proceedings Paper

Performance of wavefront sensing and control algorithms on a segmented telescope testbed
Author(s): Scott A. Basinger; David C. Redding; Andrew E. Lowman; Laura A. Burns; Karen Y. Liu; David Cohen
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Paper Abstract

We have developed a focus-diverse phase retrieval algorithm to measure and correct wavefront errors in segmented telescopes, such as the Next Generation Space Telescope. These algorithms incorporate new phase unwrapping techniques imbedded in the phase retrieval algorithms to measure aberrations larger than one wave. Through control of a deformable mirror and other actuators, these aberrations are successfully removed from the system to make the system diffraction limited. Results exceed requirements for the Wavefront Control Testbed. An overview of these techniques and performance results on the Wavefront Control Testbed are presented.

Paper Details

Date Published: 28 July 2000
PDF: 8 pages
Proc. SPIE 4013, UV, Optical, and IR Space Telescopes and Instruments, (28 July 2000); doi: 10.1117/12.394010
Show Author Affiliations
Scott A. Basinger, Jet Propulsion Lab. (United States)
David C. Redding, Jet Propulsion Lab. (United States)
Andrew E. Lowman, Jet Propulsion Lab. (United States)
Laura A. Burns, NASA Goddard Space Flight Ctr. (United States)
Karen Y. Liu, Jet Propulsion Lab. (United States)
David Cohen, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 4013:
UV, Optical, and IR Space Telescopes and Instruments
James B. Breckinridge; Peter Jakobsen, Editor(s)

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