[Masques à spectre limité pour le coronographe de TPF]
Les masques à bande limitée associés à des Lyot stops convenables peuvent supprimer efficacement la lumière de l'étoile pour permettre l'observation de l'exoplanète et son analyse. Dans cet article, nous présentons une revue de différents types de masques, leur conception, leur réalisation et leurs tests. Nous donnons les caractéristiques mesurées et les performances des masques testés en laboratoire et par simulation numérique. Une suppression de la lumière meilleure que 10−9 dans la région de 4 à 10 a été démontrée avec de tels masques dans notre banc d'essai de laboratoire.
Band-limited image plane masks, in conjunction with appropriate Lyot stops, function effectively to suppress host star light while transmitting planet light to the final image for detecting and characterizing faint exo-solar terrestrial planets. In this article, we review various types of image plane masks, their design, fabrication, and characterization. Measured characteristics and performance of sample masks in simulations and in laboratory experiments are also discussed. Star light suppression contrast better than 10−9 in the 4 to 10 region has been demonstrated with such a mask in our laboratory testbed.
Mot clés : Coronographe TPF, Masques occulteurs, Masque à bande limité, Banc ITHD
Kunjithapatham Balasubramanian 1 ; Erkin Sidick 1 ; Daniel W. Wilson 1 ; Daniel J. Hoppe 1 ; Stuart B. Shaklan 1 ; John T. Trauger 1
@article{CRPHYS_2007__8_3-4_288_0,
author = {Kunjithapatham Balasubramanian and Erkin Sidick and Daniel W. Wilson and Daniel J. Hoppe and Stuart B. Shaklan and John T. Trauger},
title = {Band-limited masks for {TPF} coronagraph},
journal = {Comptes Rendus. Physique},
pages = {288--297},
publisher = {Elsevier},
volume = {8},
number = {3-4},
year = {2007},
doi = {10.1016/j.crhy.2007.03.001},
language = {en},
}
TY - JOUR AU - Kunjithapatham Balasubramanian AU - Erkin Sidick AU - Daniel W. Wilson AU - Daniel J. Hoppe AU - Stuart B. Shaklan AU - John T. Trauger TI - Band-limited masks for TPF coronagraph JO - Comptes Rendus. Physique PY - 2007 SP - 288 EP - 297 VL - 8 IS - 3-4 PB - Elsevier DO - 10.1016/j.crhy.2007.03.001 LA - en ID - CRPHYS_2007__8_3-4_288_0 ER -
%0 Journal Article %A Kunjithapatham Balasubramanian %A Erkin Sidick %A Daniel W. Wilson %A Daniel J. Hoppe %A Stuart B. Shaklan %A John T. Trauger %T Band-limited masks for TPF coronagraph %J Comptes Rendus. Physique %D 2007 %P 288-297 %V 8 %N 3-4 %I Elsevier %R 10.1016/j.crhy.2007.03.001 %G en %F CRPHYS_2007__8_3-4_288_0
Kunjithapatham Balasubramanian; Erkin Sidick; Daniel W. Wilson; Daniel J. Hoppe; Stuart B. Shaklan; John T. Trauger. Band-limited masks for TPF coronagraph. Comptes Rendus. Physique, Volume 8 (2007) no. 3-4, pp. 288-297. doi : 10.1016/j.crhy.2007.03.001. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.03.001/
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