METIS: the thermal infrared instrument for the E-ELT
2012
The ‘Mid-infrared ELT Imager and Spectrograph’ (METIS) will be the third instrument on the European Extremely
Large Telescope (E-ELT). METIS will provide diffraction limited imaging in the atmospheric L/M and N-band from 3
to 14 μm over an 18˝×18˝ field of view, as well as high contrast coronagraphy, medium-resolution (R ≤ 5000) long slit
spectroscopy, and polarimetry. In addition, an integral field spectrograph will provide a spectral resolution of R ~
100,000 at L/M band. Focusing on highest angular resolution and high spectral resolution, METIS will deliver unique
science, in particular in the areas of exo-planets, proto-planetary-disks and high-redshift galaxies, which are illustrated in
this paper. The reduction of the E-ELT aperture size had little impact on the METIS science case. With the recent
positive developments in the area of detectors, the METIS instrument concept has reached a high level of technology
readiness. For some key components (cryogenic chopping mirror, immersed grating, sorption cooler and cryogenic
derotator) a development and test program has been launched successfully.
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