Design and performances of the ELT-METIS cryogenic derotator drive

Jean-Christophe Barrière; Olivier Corpace; Olivier Cloué; Jean Fontignié; Pablo Alberto Fuerte Rodriguez; Jan Goris; Jean-Christophe Guillard; Gerd Jakob; Stéphane Jurie; Mickaël Lacroix; Dirk Lesman; Ivan Lloro; Jeffrey Lynn; Mirka Maresca; Jorge Mendes; François Puel; Gert Raskin; Erik Ruinemans; Niels Tromp; Marijn Versteeg; Daan Zaalberg

doi:10.1117/12.3016641

26 August 2024 Design and performances of the ELT-METIS cryogenic derotator drive

Jean-Christophe Barrière, Olivier Corpace, Olivier Cloué, Jean Fontignié, Pablo Alberto Fuerte Rodriguez, Jan Goris, Jean-Christophe Guillard, Gerd Jakob, Stéphane Jurie, Mickaël Lacroix, Dirk Lesman, Ivan Lloro, Jeffrey Lynn, Mirka Maresca, Jorge Mendes, François Puel, Gert Raskin, Erik Ruinemans, Niels Tromp, Marijn Versteeg, Daan Zaalberg

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 1310032 (2024) https://doi.org/10.1117/12.3016641
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

This paper describes the work performed by the CEA Paris-Saclay team to build and qualify a cryogenic derotator mechanism for the ELT-METIS instrument. As the Extremely Large Telescope is an azimuthal telescope, a field derotator device is mandatory to keep the sky image perfectly aligned on the detector frame during the observations. The METIS consortium has chosen to place the derotator mechanism inside the cryogenic vessel, operating at 70 K under vacuum to reduce the background noise at the lowest level. This article gives the main results of the achieved performances, including a positioning accuracy in the arc second range.

Conference Presentation

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

Citation Download Citation

Jean-Christophe Barrière, Olivier Corpace, Olivier Cloué, Jean Fontignié, Pablo Alberto Fuerte Rodriguez, Jan Goris, Jean-Christophe Guillard, Gerd Jakob, Stéphane Jurie, Mickaël Lacroix, Dirk Lesman, Ivan Lloro, Jeffrey Lynn, Mirka Maresca, Jorge Mendes, François Puel, Gert Raskin, Erik Ruinemans, Niels Tromp, Marijn Versteeg, and Daan Zaalberg "Design and performances of the ELT-METIS cryogenic derotator drive", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 1310032 (26 August 2024); https://doi.org/10.1117/12.3016641

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