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Proceedings Paper

Preliminary optical design for the common fore optics of METIS
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Paper Abstract

METIS is the Mid-infrared E-ELT Imager and Spectrograph, which will provide outstanding observing capabilities, focusing on high angular and spectral resolution. It consists of two diffraction-limited imagers operating in the LM and NQ bands respectively and an IFU fed diffraction-limited high-resolution (R=100,000) LM band spectrograph. These science subsystems are preceded by the common fore optics (CFO), which provides the following essential functionalities: calibration, chopping, image de-rotation, thermal background and stray light reduction. We show the evolution of the CFO optical design from the conceptual design to the preliminary optical design, detail the optimization steps and discuss the necessary trade-offs.

Paper Details

Date Published: 9 August 2016
PDF: 17 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99089Q (9 August 2016); doi: 10.1117/12.2232512
Show Author Affiliations
Tibor Agócs, NOVA ASTRON (Netherlands)
Bernhard R. Brandl, Leiden Observatory, Leiden Univ. (Netherlands)
TU Delft (Netherlands)
Rieks Jager, NOVA ASTRON (Netherlands)
Felix Bettonvil, NOVA ASTRON (Netherlands)
Gabby Aitink-Kroes, NOVA ASTRON (Netherlands)
Lars Venema, ASTRON (Netherlands)
Matthew Kenworthy, Leiden Observatory, Leiden Univ. (Netherlands)
Olivier Absil, Univ. de Liège (Belgium)
Thomas Bertram, Max-Planck-Institut für Astronomie (Germany)

Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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