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Proceedings Paper • Open Access

MERTIS: the thermal infrared imaging spectrometer onboard of the Mercury Planetary Orbiter
Author(s): T. Zeh; G. Peter; I. Walter; E. Kopp; J. Knollenberg; J. Helbert; A. Gebhardt; I. Weber; Harry Hiesinger

Paper Abstract

The MERTIS instrument is a thermal infrared imaging spectrometer onboard of ESA’s cornerstone mission BepiColombo to Mercury. MERTIS has four goals: the study of Mercury’s surface composition, identification of rock-forming minerals, mapping of the surface mineralogy, and the study of the surface temperature variations and thermal inertia. MERTIS will provide detailed information about the mineralogical composition of Mercury’s surface layer by measuring the spectral emittance in the spectral range from 7-14 μm at high spatial and spectral resolution. Furthermore MERTIS will obtain radiometric measurements in the spectral range from 7-40 μm to study the thermo-physical properties of the surface material. The MERTIS detector is based on an uncooled micro-bolometer array providing spectral separation and spatial resolution according to its 2-dimensional shape. The operation principle is characterized by intermediate scanning of the planet surface and three different calibration targets – free space view and two on-board black body sources. In the current project phase, the MERTIS Qualification Model (QM) is under a rigorous testing program. Besides a general overview of the instrument principles, the papers addresses major aspects of the instrument design, manufacturing and verification.

Paper Details

Date Published: 20 November 2017
PDF: 8 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105641X (20 November 2017); doi: 10.1117/12.2309027
Show Author Affiliations
T. Zeh, Kayser-Threde GmbH (Germany)
G. Peter, Deutsches Zentrum für Luft- und Raumfahrt (Germany)
I. Walter, Deutsches Zentrum für Luft- und Raumfahrt (Germany)
E. Kopp, Deutsches Zentrum für Luft- und Raumfahrt (Germany)
J. Knollenberg, Deutsches Zentrum für Luft- und Raumfahrt (Germany)
J. Helbert, Deutsches Zentrum für Luft- und Raumfahrt (Germany)
A. Gebhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
I. Weber, Westfaelische Wilhelms-Univ. Muenster (Germany)
Harry Hiesinger, Westfaelische Wilhelms-Univ. Muenster (Germany)


Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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