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Studies of the effects of actuator errors on the HCIT/PIAA contrast performance

Show simple item record Sidick, Erkin Shaklan, Stuart Give’on, Amir Kern, Brian 2014-09-18T21:34:05Z 2014-09-18T21:34:05Z 2010-06-27
dc.identifier.citation SPIE Astronomical Telescopes and Instrumentation 2010, San Diego, California, June 27 - July 2, 2010 en_US
dc.identifier.clearanceno 10-2148
dc.description.abstract The High Contrast Imaging Testbed Phase Induced Amplitude Apodization (HCIT/PIAA) coronagraph system at JPL relies on an Electric-Field Conjugation (EFC) wavefront correction algorithm to obtain the required high contrast. This algorithm works with one deformable mirror (DM) to estimate the electric-field to be controlled, and with one or multiple DM’s to create a “dark-hole” in the image plane. We have investigated the effects of DM actuator errors on the efficiency of the EFC algorithm. The structural design of the optical system as well as the parameters of various optical elements used in the analysis are drawn from those of the HCIT/PIAA system that have been and will be implemented with one or two DM’s. The simulation takes into account the surface errors of various optical elements. In this paper, we report our findings in the case of narrowband wavelength light. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject Coronagraph en_US
dc.subject high-contrast imaging en_US
dc.subject PIAA en_US
dc.subject pupil mapping en_US
dc.subject exoplanets en_US
dc.title Studies of the effects of actuator errors on the HCIT/PIAA contrast performance en_US
dc.type Preprint en_US

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