
Proceedings Paper
Self-Coherent Camera: active correction and post-processing for Earth-like planet detectionFormat | Member Price | Non-Member Price |
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Paper Abstract
Detecting light from faint companions or protoplanetary disks lying close to their host star is a demanding task
since these objects are often hidden in the overwhelming star light. A lot of coronagraphs have been proposed to
reduce that stellar light and thus, achieve very high contrast imaging, which would enable to take spectra of the
faint objects and characterize them. However, coronagraph performance is limited by residual wavefront errors
of the incoming beam which create residual speckles in the focal plane image of the central star. Correction or
calibration of the wavefront are then necessary to overcome that limitation. We propose to use a Self-Coherent
Camera (SCC, Baudoz et al. 2006). The SCC is one of the techniques proposed for EPICS, the futur planet
finder of the European Extremely Large Telescope but can also be studied in a space telescope context. The
instrument is based on the incoherence between stellar and companion lights. It works in two steps. We first
estimate wavefront errors to be corrected by a deformable mirror and then, we apply a post-processing algorithm
to achieve very high contrast imaging.
Paper Details
Date Published: 17 July 2008
PDF: 10 pages
Proc. SPIE 7015, Adaptive Optics Systems, 70156P (17 July 2008); doi: 10.1117/12.787968
Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)
PDF: 10 pages
Proc. SPIE 7015, Adaptive Optics Systems, 70156P (17 July 2008); doi: 10.1117/12.787968
Show Author Affiliations
Raphaël Galicher, LESIA, CNRS, Observatoire de Paris (France)
Pierre Baudoz, LESIA, CNRS, Observatoire de Paris (France)
Pierre Baudoz, LESIA, CNRS, Observatoire de Paris (France)
Gérard Rousset, LESIA, CNRS, Observatoire de Paris (France)
Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)
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