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arXiv · 2012.01963

High contrast imaging for the enhanced resolution imager and spectrometer (ERIS)

Matthew A. Kenworthy·Frans Snik·Christoph U. Keller·David Doelman·Emiel H. Por·Olivier Absil·Brunella Carlomagno·Mikael Karlsson·Elsa Huby·Adrian M. Glauser·Sascha P. Quanz·William D. Taylor
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Abstract

ERIS is a diffraction limited thermal infrared imager and spectrograph for the Very Large Telescope UT4. One of the science cases for ERIS is the detection and characterization of circumstellar structures and exoplanets around bright stars that are typically much fainter than the stellar diffraction halo. Enhanced sensitivity is provided through the combination of (i) suppression of the diffraction halo of the target star using coronagraphs, and (ii) removal of any residual diffraction structure through focal plane wavefront sensing and subsequent active correction. In this paper we present the two coronagraphs used for diffraction suppression and enabling high contrast imaging in ERIS.

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Matthew A. Kenworthy, Frans Snik, Christoph U. Keller, David Doelman, Emiel H. Por, Olivier Absil, Brunella Carlomagno, Mikael Karlsson, Elsa Huby, Adrian M. Glauser, Sascha P. Quanz, William D. Taylor. 2020-12-03. High contrast imaging for the enhanced resolution imager and spectrometer (ERIS). https://doi.org/10.1117/12.2313964

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