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[en] The direct detection of low-mass planets in the habitable zone of nearby stars is an important science case for future E-ELT instruments such as the mid-infrared imager and spectrograph METIS, which features vortex phase masks and apodizing phase plates (APP) in its baseline design. In this work, we present end-to-end performance simulations, using Fourier propagation, of several METIS coronagraphic modes, including focal-plane vortex phase masks and pupil-plane apodizing phase plates, for the centrally obscured, segmented E-ELT pupil. The atmosphere and the AO contributions are taken into account. Hybrid coronagraphs combining the advantages of vortex phase masks and APPs are considered to improve the METIS coronagraphic performance.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Carlomagno, Brunella ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Absil, Olivier ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Kenworthy, Matthew; Leiden Univ. (Netherlands)
Ruane, Garreth; California Institute of Technology (United States)
Keller, Christoph U.; Leiden Univ. (Netherlands)
Otten, Gilles; Leiden Univ. (Netherlands)
Feldt, Markus; Max-Planck-Institut für Astronomie (Germany)
Hippler, Stefan; Max-Planck-Institut für Astronomie (Germany)
Huby, Elsa ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Mawet, Dimitri; California Institute of Technology (United States)
Delacroix, Christian ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Surdej, Jean ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Habraken, Serge ; Université de Liège > Département de physique > Optique - Hololab
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