Stars: Planetary Systems; Stars: Imaging; Techniques: High Anular Resolution
Abstract :
[en] Pupil replication has been proposed by Greenaway et al. as a new optical technique to improve the suppression of starlight in high dynamic imaging. This Letter extends numerical simulations in the two-dimensional case with various realistic imperfections (surface error, chromatic smearing, and pupil shift). These results demonstrate some strong limitations compared to single-pupil apodization techniques for exoplanet detection.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Riaud, Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Mawet, Dimitri; Université de Liège - ULiège > Institut d'Astrophysique et de Géophysique
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
Limitation of the Pupil Replication Technique in the Presence of Instrumental Defects