Bibcode
Gladysz, Szymon; Ribak, Erez; Femenia, B.; Jolissaint, Laurent; Martinez, Patrice; Soummer, Remi; Aller Carpentier, Emmanuel; Kasper, Markus; Christou, Julian
Bibliographical reference
1st AO4ELT conference - Adaptative Optics for Extremely Large Telescopes, held 22-26 June, 2009 in Paris, France. Edited by Y. Clénet, J.-M. Conan, Th. Fusco, and G. Rousset. EDP Sciences, 2010, id.09002
Advertised on:
2010
Citations
0
Refereed citations
0
Description
Efficient suppression of the residual stellar light is paramount to the
success of exoplanet imaging efforts. We present a new approach to
diffraction suppression on extremely large telescopes. The method is
based on the realization that by obscuring part of the wavefront in the
Lyot stop we can change the shape of the corresponding PSF. This
obscuration is then modulated leading to modulated Airy pattern, while
image of a planet - if present - is only slightly affected. The
modulation could then be removed from the set of images, leading to
better SNR of the possible planets. Simulation of the European Extremely
Large Telescope has been used to test this approach.