Article Dans Une Revue Review of Scientific Instruments Année : 2024

Calibration of MAJIS (Moons And Jupiter Imaging Spectrometer). II. Spatial calibration

Francois Poulet
Yves Langevin
C. Pilorget

Résumé

MAJIS, Moons and Jupiter Imaging Spectrometer, is one of the scientific payloads aboard European Space Agency's Jupiter Icy Moons Explorer mission. This instrument underwent a comprehensive characterization and calibration campaign before integration on the spacecraft. In this work, we report on the measurements of the instrumental spatial responses, including the slit and pixel functions, the knife edge function, the ensquared energy, and the keystone aberration. The measurements were repeated in several positions of the field of view and within the range of MAJIS temperatures during science observations. The goal was to characterize the instrument's response under a wide set of conditions and at different visible-infrared wavelengths. The experimental setups employed to perform calibrations are described in detail, and the methodology applied to derive the instrumental spatial responses is discussed. After launch, minor changes in the instrument response and the coalignment between the two spectral channels were identified by comparing on-ground data with the first in-flight data returned by MAJIS.

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Dates et versions

insu-04843873 , version 1 (17-12-2024)

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Gianrico Filacchione, Paolo Haffoud, Francois Poulet, Giuseppe Piccioni, Yves Langevin, et al.. Calibration of MAJIS (Moons And Jupiter Imaging Spectrometer). II. Spatial calibration. Review of Scientific Instruments, 2024, 95 (4), ⟨10.1063/5.0203872⟩. ⟨insu-04843873⟩
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