29 June 2006 MIDIR/T-OWL: the thermal/mid-IR instrument for the E-ELT
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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].
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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); doi: 10.1117/12.670806; https://doi.org/10.1117/12.670806
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