Physics – Optics
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7015e..50v&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
Performance of wave-front control and coronagraphy are very critical for high contrast imaging on an ELT. Quasi-static aberrations will have a dramatic impact on the detection performance for the most demanding science objectives of EPICS, the direct imaging of exo-planets. The contribution of these systematic errors will have to be significantly lower than the overall residual halo level due to turbulence correction residual after coronagraphy. We present preliminary results of the strategy to measure wave front errors after the coronagraph with the goal of minimizing common path errors for the correction of static speckles. The development of two novel post-coronagraphic wave-front sensors is given.
Baudoz Pierre
Beuzit Jean Luc
Galicher Rapha"l.
Kern Pierre
Mollard Roxane
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