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Proceedings Paper

The mercury radiometer and thermal infrared imaging spectrometer (MERTIS) onboard Bepi Colombo: first inflight calibration results
Author(s): Mario D'Amore; Jörn Helbert; Alessandro Maturilli; Indhu Varatharajan; Bernd Ulmer; Thomas Säuberlich; Rainer Berlin; Gisbert Peter; Harald Hiesinger; Gabriele Arnold
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Paper Abstract

The MErcury Radiometer and Thermal Infrared Spectrometer (MERTIS) is an instrument to study the mineralogy and temperature distribution of Mercury’s surface in unprecedented detail. MERTIS was proposed in 2003 as payload of the Mercury Planetary Orbiter spacecraft of ESA-JAXA BepiColombo mission and will reach Mercury in 2025. MERTIS will map the whole surface at 500 m scale, combining a push-broom IR grating spectrometer (TIS) with a radiometer (TIR) sharing the same optics, instrument electronics and in-flight calibration components for the whole wavelength range of 7- 14μm (TIS) and 7-40μm (TIR). MERTIS successfully completed its planned tests of the Near-Earth Commissioning Phase (NECP) between 13 and 14 November, collecting thousands of measurements of its internal calibration bodies and deep space. The data collected during NECP, are being used to verify the operational performances of onboard sub-modules, in particular the spectrometer and radiometer sensor sensitivity. A preliminary look at calibrated data shows a performance comparable with ground-based measurements and no appreciable performance loss or misalignment. The next important dates for MERTIS are the Earth/Moon flyby on 6 April 2020 and the first Venus flyby on 12 October 2020. Both those encounters will be important both for further instrument calibration refinement and for possible unprecedented measurement in the thermal infrared of the Moon and Venus.

Paper Details

Date Published: 9 September 2019
PDF: 8 pages
Proc. SPIE 11128, Infrared Remote Sensing and Instrumentation XXVII, 111280U (9 September 2019);
Show Author Affiliations
Mario D'Amore, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Jörn Helbert, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Alessandro Maturilli, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Indhu Varatharajan, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Bernd Ulmer, Ingenieurbüro Ulmer (Germany)
Thomas Säuberlich, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Rainer Berlin, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Gisbert Peter, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Harald Hiesinger, Westfälische Wilhelms-Univ. Münster (Germany)
Gabriele Arnold, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)


Published in SPIE Proceedings Vol. 11128:
Infrared Remote Sensing and Instrumentation XXVII
Marija Strojnik; Gabriele E. Arnold, Editor(s)

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