Preliminary design study of the integral field unit for the E-ELT Harmoni instrument

J. Kosmalski; M. Tecza; I. Bryson; F. Clarke; D. Freeman; M. Loupias; J. E. Migniau; A. Remillieux; N. A. Thatte

doi:10.1117/12.2232582

9 August 2016 Preliminary design study of the integral field unit for the E-ELT Harmoni instrument

J. Kosmalski, M. Tecza, I. Bryson, F. Clarke, D. Freeman, M. Loupias, J. E. Migniau, A. Remillieux, N. A. Thatte

Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI; 99089T (2016) https://doi.org/10.1117/12.2232582
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

HARMONI is a visible and near-infrared (0.47 to 2.45 μm) integral field spectrograph over a range of resolving powers from R~3000 to R~20000. We will present in this paper, the different concepts of the HARMONI Integral Field Unit that makes the link between HARMONI Preoptics and the 4 Spectrographs. It is composed of a field splitter/relay system and an image slicer that creates from a rectangular Field of View a very long (532mm) pseudo-slit for each spectrograph. HARMONI is also considering a separate visible spectrograph and we present a possible image slicer for this option.

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J. Kosmalski, M. Tecza, I. Bryson, F. Clarke, D. Freeman, M. Loupias, J. E. Migniau, A. Remillieux, and N. A. Thatte "Preliminary design study of the integral field unit for the E-ELT Harmoni instrument", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99089T (9 August 2016); https://doi.org/10.1117/12.2232582

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