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Proceedings Paper

MUSE integral field unit: test results on the first out of 24
Author(s): Florence Laurent; Louisa Adjali; James Arns; Roland Bacon; Didier Boudon; Patrick Caillier; Eric Daguisé; Bernard Delabre; Jean-Pierre Dubois; Philippe Godefroy; Aurélien Jarno; Paul Jorden; Johan Kosmalski; Vincent Lapère; Jean-Louis Lizon; Magali Loupias; Arlette Pecontal; Roland Reiss; Alban Remillieux; Edgard Renault; Gero Rupprecht; Yves Salaun
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Paper Abstract

MUSE (Multi Unit Spectroscopic Explorer) is a second generation VLT panoramic integral field spectrograph developed for the European Southern Observatory (ESO), operating in the visible wavelength range (0.465-0.93 μm). It is composed of 24 identical Integral Field Units (IFU); each one incorporates an advanced image slicer associated with a classical spectrograph and a detector vessel. The Image Slicer subsystem -ISS- is composed of two mirror arrays of 48 spherical elements each. It is made of Zerodur and uses an innovative polishing approach where all individual components are polished together by classical method. The MUSE Spectrograph -SPS-, with fast output focal ratio of f/1.95, implements a Volume Phase Holographic Grating - VPHG. The last subsystem, the Detector Vessel -DV- includes a chip of 4k by 4k 15μm pixels supported by a Vacuum and Cryogenic System - VCS - provided by ESO. The first out of 24 IFUs for MUSE instrument has been manufactured, aligned and tested last months. First, this paper describes the optical design, the manufacturing and test results (image quality, pupil and field of view positioning) of each subsystem independently. Second, we will focus on overall system performance (image quality and positioning) of the spectrograph associated with the detector vessel. At the end, the test results (image quality, positioning, throughput, mechanical interfaces) of the first IFU for MUSE instrument will be reported. Most of them are compliant with requirements that it demonstrates that the manufacturing, integration, alignment and tests processes are mature and gives good confidence for serial production by 24 times applied to MUSE instrument.

Paper Details

Date Published: 20 July 2010
PDF: 12 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77394M (20 July 2010); doi: 10.1117/12.857004
Show Author Affiliations
Florence Laurent, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Louisa Adjali, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
James Arns, Kaiser Optical Systems, Inc. (United States)
Roland Bacon, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Didier Boudon, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Patrick Caillier, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Eric Daguisé, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Bernard Delabre, European Southern Observatory (Germany)
Jean-Pierre Dubois, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Philippe Godefroy, Winlight Optics & Winlight System (France)
Aurélien Jarno, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Paul Jorden, e2V technologies plc (United Kingdom)
Johan Kosmalski, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Vincent Lapère, Winlight Optics & Winlight System (France)
Jean-Louis Lizon, European Southern Observatory (Germany)
Magali Loupias, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Arlette Pecontal, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Roland Reiss, European Southern Observatory (Germany)
Alban Remillieux, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Edgard Renault, Univ. de Lyon (France)
Observatoire de Lyon (France)
Ctr. de Recherche Astrophysique de Lyon, CNRS, Ecole Normale Supérieure de Lyon (France)
Gero Rupprecht, European Southern Observatory (Germany)
Yves Salaun, Winlight Optics & Winlight System (France)


Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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