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Proceedings Paper

CRAL expertise on image slicer: optical designs, glass or metallic manufacturing, test and results
Author(s): Edgard Renault; Florence Laurent; Johan Kosmalski; Louisa Adjali
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Paper Abstract

A research and development activity on image slicer systems for integral field spectroscopy has grown in the last years. It allows the simultaneous observation on the same detector matrix of two-dimensional sky maps and a spectral decomposition of light reducing the observation times. Today, image slicers lead to possible applications on future instrumentation for ground-based and space telescopes, covering a spectral domain ranging from blue to mid-IR wavelengths. Since 2001, the Centre de Recherche Astrophysique de Lyon has designed, manufactured, integrated and tested six different breadboards using advanced image slicers. These breadboards are based on different optical designs (three or two mirror arrays or a combination of mirrors and mini-lens arrays). All these designs will be presented. Furthermore, all manufacturing methods will be described. Some use classical polishing approach on Zerodur with an assembling by molecular adhesion. Others are made of metal with monolithic or segmented optical elements and state-of-the-art diamond turning machines. Then all individual tests (roughness, shape and reflectivity) and system performances (alignment and quality image) will be summarized. We will conclude with a comparison between these different breadboards by choosing the most suitable solution for the projects.

Paper Details

Date Published: 23 July 2008
PDF: 12 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70182F (23 July 2008); doi: 10.1117/12.790648
Show Author Affiliations
Edgard Renault, Univ. de Lyon 1, Ctr. de Recherche Astronomique de Lyon, Observatoire de Lyon (France)
CNRS, UMR 5574, Ecole Normale Supérieure de Lyon (France)
Florence Laurent, Univ. de Lyon 1, Ctr. de Recherche Astronomique de Lyon, Observatoire de Lyon (France)
CNRS, UMR 5574, Ecole Normale Supérieure de Lyon (France)
Johan Kosmalski, Univ. de Lyon 1, Ctr. de Recherche Astronomique de Lyon, Observatoire de Lyon (France)
CNRS, UMR 5574, Ecole Normale Supérieure de Lyon (France)
Louisa Adjali, Univ. de Lyon 1, Ctr. de Recherche Astronomique de Lyon, Observatoire de Lyon (France)
CNRS, UMR 5574, Ecole Normale Supérieure de Lyon (France)


Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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