HARMONI ELT instrument: integral field unit cryogenic engineering models results

Matthieu Guibert; Jean-Emmanuel Migniau; Magali Loupias; Alexandre Jeanneau; Alban Remillieux; Karen Disseau; Eric Daguisé; Diane Chapuis; Didier Boudon; Nicolas Bouché; Johan RICHARD; Hermine Schnetler; Dave Melotte; Niranjan A. Thatte; Fraser Clarke; Matthias Tecza

doi:10.1117/12.2629829

29 August 2022 HARMONI ELT instrument: integral field unit cryogenic engineering models results

Matthieu Guibert, Jean-Emmanuel Migniau, Magali Loupias, Alexandre Jeanneau, Alban Remillieux, Karen Disseau, Eric Daguisé, Diane Chapuis, Didier Boudon, Nicolas Bouché, Johan RICHARD, Hermine Schnetler, Dave Melotte, Niranjan A. Thatte, Fraser Clarke, Matthias Tecza

Author Affiliations +

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121881H (2022) https://doi.org/10.1117/12.2629829
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

HARMONI is the first light visible and near-IR integral field spectrograph for the ELT. It covers a large spectral range from 450nm to 2450nm with resolving powers from 3500 to 18000 and spatial sampling from 60mas to 4mas. It can operate in two Adaptive Optics modes - SCAO and LTAO - or with NOAO. The Integral Field Unit (IFU) sub-system is part of an Integral Field Spectrograph cooled down at 130K. The IFU is in charge of splitting, slicing and rearranging the rectangular field of view into 4 long slits (~540mm) to feed 4 spectrographs. It consists of more than 60 mirrors blocks that have to be aligned and maintained inside the HARMONI cryostat. As the project prepares for Final Design Reviews, we present the design of the IFU mirror mounts as well as performance results obtained on engineering models.

Conference Presentation

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Matthieu Guibert, Jean-Emmanuel Migniau, Magali Loupias, Alexandre Jeanneau, Alban Remillieux, Karen Disseau, Eric Daguisé, Diane Chapuis, Didier Boudon, Nicolas Bouché, Johan RICHARD, Hermine Schnetler, Dave Melotte, Niranjan A. Thatte, Fraser Clarke, and Matthias Tecza "HARMONI ELT instrument: integral field unit cryogenic engineering models results", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121881H (29 August 2022); https://doi.org/10.1117/12.2629829

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