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Proceedings Paper

An aperture masking mode for the MICADO instrument
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Paper Abstract

MICADO is a near-IR camera for the European ELT, featuring an extended field (75” diameter) for imaging, and also spectrographic and high contrast imaging capabilities. It has been chosen by ESO as one of the two first-light instruments. Although it is ultimately aimed at being fed by the MCAO module called MAORY, MICADO will come with an internal SCAO system that will be complementary to it and will deliver a high performance on axis correction, suitable for coronagraphic and pupil masking applications. The basis of the pupil masking approach is to ensure the stability of the optical transfer function, even in the case of residual errors after AO correction (due to non common path errors and quasi-static aberrations). Preliminary designs of pupil masks are presented. Trade-offs and technical choices, especially regarding redundancy and pupil tracking, are explained.

Paper Details

Date Published: 14 July 2014
PDF: 7 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479F (14 July 2014); doi: 10.1117/12.2057070
Show Author Affiliations
S. Lacour, LESIA, Observatoire de Paris (France)
P. Baudoz, LESIA, Observatoire de Paris (France)
E. Gendron, LESIA, Observatoire de Paris (France)
A. Boccaletti, LESIA, Observatoire de Paris (France)
R. Galicher, LESIA, Observatoire de Paris (France)
Y. Clénet, LESIA, Observatoire de Paris (France)
D. Gratadour, LESIA, Observatoire de Paris (France)
T. Buey, LESIA, Observatoire de Paris (France)
G. Rousset, LESIA, Observatoire de Paris (France)
M. Hartl, Max-Planck-Institut für extraterrestrische Physik (Germany)
R. Davies, Max-Planck-Institut für extraterrestrische Physik (Germany)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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