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Proceedings Paper

Optical design of the relay optics for the MICADO SCAO system
Author(s): Mathieu Cohen; Fanny Chemla; Tristan Buey; Éric Gendron; Zoltan Hubert; Michael Hartl; Yann Clénet; Richard Davies
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Paper Abstract

We present the current optical design of the Relay Optics (RO) dedicated to the single-conjugate adaptive optics (SCAO) mode for the first light E-ELT imaging camera MICADO. MICADO is a wide-field near-IR camera featuring a 75 arcsec field of view, with spectrographic, astrometric, and coronagraphic capabilities. It has been chosen by ESO as one of the two first-light instruments. MICADO will be optimized for the multi-conjugate adaptive optics module MAORY and will also work in SCAO mode to provide a high-level, on-axis correction (making use of the adaptive secondary M4 in the telescope). For full scientific exploitation and in a phase approach for developing AO performance at the ELT, a SCAO mode is needed for MICADO. It will be a joint development between the MICADO and MAORY consortia and in the long term integrated in MAORY. Different options are presented to accommodate different set of requirements, the development plan of MICADO and MAORY instruments will lead to the final configuration and the used of the SCAO and its RO. They allow Coronagraphic observations providing an intermediate pupil plane to accommodate an atmospheric dispersion corrector and an apodizer.

Paper Details

Date Published: 7 August 2014
PDF: 12 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 914833 (7 August 2014); doi: 10.1117/12.2056286
Show Author Affiliations
Mathieu Cohen, LESIA, CNRS, GEPI Observatoire de Paris (France)
Fanny Chemla, LESIA, CNRS, GEPI Observatoire de Paris (France)
Tristan Buey, LESIA, CNRS, GEPI Observatoire de Paris (France)
Éric Gendron, LESIA, CNRS, GEPI Observatoire de Paris (France)
Zoltan Hubert, LESIA, CNRS, GEPI Observatoire de Paris (France)
Michael Hartl, Max-Planck-Institut für extraterrestrische Physik (Germany)
Yann Clénet, LESIA, CNRS, GEPI Observatoire de Paris (France)
Richard Davies, Max-Planck-Institut für extraterrestrische Physik (Germany)

Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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