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Proceedings Paper

METIS: system engineering and optical design of the mid-infrared E-ELT instrument
Author(s): Rainer Lenzen; Bernhard R. Brandl; Eric Pantin; Alistair Glasse; Joris Blommaert; Lars Venema; Rik ter Horst; Ad Oudenhuysen; Frank Molster; Ralf Siebenmorgen; Hermann Böhnhardt; Ewine van Dishoeck; Paul van der Werf; Wolfgang Brandner; Thomas Henning; Stefan Hippler; Pierre-Olivier Lagage; Toby J. T. Moore; Maarten Baes; Christoffel Waelkens; Chris Wright; Hans Ulrich Käufl; Sarah Kendrew; Remko Stuik; Laurent Jolissaint
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Paper Abstract

METIS is a mid-infrared instrument proposed for the European Extremely Large Telescope (E-ELT). It is designed to provide imaging and spectroscopic capabilities in the 3μm to 14μm region up to a spectral resolution of 100.000. Here the technical concept of METIS is described which has been developed based on an elaborated science case which is presented elsewhere in this conference. There are five main opto-mechanical modules all integrated into a common cryostat: The fore-optics is re-imaging the telescope focal plane into the cryostat, including a chopper, an optical de-rotator and an un-dispersed pupil stop. The imager module provides diffraction limited direct imaging, low-resolution grism spectroscopy, polarimetry and coronagraphy. The high resolution IFU spectrograph offers a spectral resolution of 100.000 for L- and M-band and optional 50.000 for the N-band. In addition to the WFS integrated into the E-ELT, there is a METIS internal on-axis WFS operating at visual wavelengths. Finally, a cold (and an external warm) calibration unit is providing all kinds of spatial and spectral calibrations capabilities. METIS is planned to be used at one of the direct Nasmyth foci available at the E-ELT. This recently finished Phase-A study carried out within the framework of the ESO sponsored E-ELT instrumentation studies has been performed by an international consortium with institutes from Germany, Netherlands, France, United Kingdom and Belgium.

Paper Details

Date Published: 21 July 2010
PDF: 12 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77357O (21 July 2010); doi: 10.1117/12.856242
Show Author Affiliations
Rainer Lenzen, Max-Planck-Institut für Astronomie (Germany)
Bernhard R. Brandl, Leiden Observatory, Leiden Univ. (Netherlands)
Eric Pantin, DSM, DAPNIA, Service d'Astrophysique, CEA Saclay (France)
Alistair Glasse, UK Astronomy Technology Ctr., The Royal Observatory Edinburgh (United Kingdom)
Joris Blommaert, Katholieke Univ. Leuven (Belgium)
Lars Venema, ASTRON (Netherlands)
Rik ter Horst, ASTRON (Netherlands)
Ad Oudenhuysen, ASTRON (Netherlands)
Frank Molster, Leiden Observatory, Leiden Univ. (Netherlands)
Ralf Siebenmorgen, European Southern Observatory (Germany)
Hermann Böhnhardt, Max-Planck-Institut für Sonnensystemforschung (Germany)
Ewine van Dishoeck, Leiden Observatory, Leiden Univ. (Netherlands)
Paul van der Werf, Leiden Observatory, Leiden Univ. (Netherlands)
Wolfgang Brandner, Max-Planck-Institut für Astronomie (Germany)
Thomas Henning, Max-Planck-Institut für Astronomie (Germany)
Stefan Hippler, Max-Planck-Institut für Astronomie (Germany)
Pierre-Olivier Lagage, DSM, DAPNIA, Service d'Astrophysique, CEA Saclay (France)
Toby J. T. Moore, Liverpool John Moores Univ. (United Kingdom)
Maarten Baes, Univ. Gent (Belgium)
Christoffel Waelkens, Katholieke Univ. Leuven (Belgium)
Chris Wright, The Univ. of New South Wales (Australia)
Hans Ulrich Käufl, European Southern Observatory (Germany)
Sarah Kendrew, Leiden Observatory, Leiden Univ. (Netherlands)
Remko Stuik, Leiden Observatory, Leiden Univ. (Netherlands)
Laurent Jolissaint, Leiden Observatory, Leiden Univ. (Netherlands)

Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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