MIDIR/T-OWL: the thermal/mid-IR instrument for the E-ELT

Bernhard Brandl; Rainer Lenzen; Lars Venema; Hans-Ulrich Käufl; Gert Finger; Alistair Glasse; Wolfgang Brandner; Remko Stuik

doi:10.1117/12.670806

29 June 2006 MIDIR/T-OWL: the thermal/mid-IR instrument for the E-ELT

Bernhard Brandl, Rainer Lenzen, Lars Venema, Hans-Ulrich Käufl, Gert Finger, Alistair Glasse, Wolfgang Brandner, Remko Stuik

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Proceedings Volume 6269, Ground-based and Airborne Instrumentation for Astronomy; 626920 (2006) https://doi.org/10.1117/12.670806
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

MIDIR is a combined thermal/mid-infrared imager and spectrograph for the European Extremely Large Telescope (EELT). It will operate in the infrared L, M, N, and Q-band to 20μm with a goal to extend the wavelength coverage to 27μm if the atmospheric properties of the site are sufficiently good. MIDIR will offer imaging and spectroscopic modes over a wide range in spectral resolution. MIDIR will be designed for diffraction limited performance, requiring an optimized, cryogenic adaptive optics (AO) system. The conceptual study of MIDIR is part of a suite of eight ELT instrument "small studies" partly funded by the EU [1]. The study is being performed by an international consortium of Leiden Observatory, Astron, MPIA, UK-ATC, and ESO. The high level instrument requirements for MIDIR have been directly derived from numerous important science cases. In this paper we discuss the science case for MIDIR, provide a summary of the technical specifications, discuss the requirements on the AO system, and estimate the sensitivity in various observing modes. More technical details on the instrument are given in a parallel paper at this conference [2].

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Bernhard Brandl, Rainer Lenzen, Lars Venema, Hans-Ulrich Käufl, Gert Finger, Alistair Glasse, Wolfgang Brandner, and Remko Stuik "MIDIR/T-OWL: the thermal/mid-IR instrument for the E-ELT", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 626920 (29 June 2006); https://doi.org/10.1117/12.670806

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KEYWORDS

Telescopes

Adaptive optics

Mid-IR

Imaging spectroscopy

Spatial resolution

Stars

Spectral resolution

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