METIS high-contrast imaging: from final design to manufacturing and testing

Olivier Absil; Matthew Kenworthy; Christian Delacroix; Gilles Orban de Xivry; Lorenzo König; Prashant Pathak; David Doelman; Emiel Por; Frans Snik; Joost van den Born; Faustine Cantalloube; Alexis Carlotti; Benjamin Courtney-Barrer; Pontus Forsberg; Mikael Karlsson; Thomas Bertram; Roy van Boekel; Dennis Dolkens; Markus Feldt; Adrian M. Glauser; Eric Pantin; Sascha P. Quanz; Felix Bettonvil; Bernhard Brandl

doi:10.1117/12.3019692

18 July 2024 METIS high-contrast imaging: from final design to manufacturing and testing

Olivier Absil, Matthew Kenworthy, Christian Delacroix, Gilles Orban de Xivry, Lorenzo König, Prashant Pathak, David Doelman, Emiel Por, Frans Snik, Joost van den Born, Faustine Cantalloube, Alexis Carlotti, Benjamin Courtney-Barrer, Pontus Forsberg, Mikael Karlsson, Thomas Bertram, Roy van Boekel, Dennis Dolkens, Markus Feldt, Adrian M. Glauser, Eric Pantin, Sascha P. Quanz, Felix Bettonvil, Bernhard Brandl

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 1309652 (2024) https://doi.org/10.1117/12.3019692
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Mid-infrared ELT Imager and Spectrograph (METIS) is one of the first-generation scientific instruments for the ELT, built under the supervision of ESO by a consortium of research institutes across and beyond Europe. Designed to cover the 3 to 13 μm wavelength range, METIS had its final design reviewed in Fall 2022, and has then entered in earnest its manufacture, assembly, integration, and test (MAIT) phase. Here, we present the final design of the METIS high-contrast imaging (HCI) modes. We detail the implementation of the two main coronagraphic solutions selected for METIS, namely the vortex coronagraph and the apodizing phase plate, including their combination with the high-resolution integral field spectrograph of METIS, and briefly describe their respective backup plans (Lyot coronagraph and shaped pupil plate). We then describe the status of the MAIT phase for HCI modes, including a review of the final design of individual components such as the vortex phase masks, the grayscale ring apodizer, and the apodizing phase plates, as well as a description of their on-going performance tests and of our plans for system-level integration and tests. Using end-to-end simulations, we predict the performance that will be reached on sky by the METIS HCI modes in presence of various environmental and instrumental disturbances, including non-common path aberrations and water vapor seeing, and discuss our strategy to mitigate these various effects. We finally illustrate with mock observations and data processing that METIS should be capable of directly imaging temperate rocky planets around the nearest stars.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Olivier Absil, Matthew Kenworthy, Christian Delacroix, Gilles Orban de Xivry, Lorenzo König, Prashant Pathak, David Doelman, Emiel Por, Frans Snik, Joost van den Born, Faustine Cantalloube, Alexis Carlotti, Benjamin Courtney-Barrer, Pontus Forsberg, Mikael Karlsson, Thomas Bertram, Roy van Boekel, Dennis Dolkens, Markus Feldt, Adrian M. Glauser, Eric Pantin, Sascha P. Quanz, Felix Bettonvil, and Bernhard Brandl "METIS high-contrast imaging: from final design to manufacturing and testing", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309652 (18 July 2024); https://doi.org/10.1117/12.3019692

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