Performance of wavefront sensing and control algorithms on a segmented telescope testbed

Details Performance of wavefront sensing and control algorithms on a segmented telescope testbed Performance of wavefront sensing and control algorithms on a segmented telescope testbed

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4013..749b&link_type=abstract

Proc. SPIE Vol. 4013, p. 749-756, UV, Optical, and IR Space Telescopes and Instruments, James B. Breckinridge; Peter Jakobsen; E

Computer Science

Performance

Scientific paper

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.

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