Wavefront sensing and control for a segmented primary mirror

Details Wavefront sensing and control for a segmented primary mirror Wavefront sensing and control for a segmented primary mirror

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7015e.130d&link_type=abstract

Adaptive Optics Systems. Edited by Hubin, Norbert; Max, Claire E.; Wizinowich, Peter L. Proceedings of the SPIE, Volume 7015

Physics

Optics

Scientific paper

Large-aperture segmented primary mirror has been widely used in high-resolution space telescopes. In this paper, we concentrate on the wavefront sensing and control (WFS&C) methods for a segmented primary mirror comprising a central octagon and eight surrounding petals. As the wavefront errors have a wide dynamic range in amplitude and spatial frequency, a multistage wavefront control algorithm is proposed. The control process is divided to five steps to reduce the wavefront errors gradually. A simulation toolbox integrating multi-disciplinary software has been developed to verify our WFS&C algorithms. Simulation results give a good demonstration of the feasibility of our algorithms.

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