The Mercury Radiometer and Thermal Infrared Imaging Spectrometer (MERTIS) Onboard Bepi Colombo: First Inflight Calibration Results

MErcury Radiometer and Thermal Infrared Spectrometer (MERTIS) is an instrument to study the mineralogy and temperature distribution of Mercury’s surface in unprecedented detail. During the nominal mission, 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 inflight calibration components for the whole wavelength range of 7-14µm (TIS) and 7-40µm (TIR) [1]. The instrument successfully completed the Near Earth Commissioning Phase (NECP) in November 2018. Calibrated data shows performances comparable with ground based measurements and very small changes in sensitivity