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Moons and Jupiter Imaging Spectrometer (MAJIS) on Jupiter Icy Moons Explorer (JUICE)

Abstract:
The MAJIS (Moons And Jupiter Imaging Spectrometer) instrument on board the ESA JUICE (JUpiter ICy moon Explorer) mission is an imaging spectrometer operating in the visible and near-infrared spectral range from 0.50 to 5.55 μm in two spectral channels with a boundary at 2.3 μm and spectral samplings for the VISNIR and IR channels better than 4 nm/band and 7 nm/band, respectively. The IFOV is 150 μrad over a total of 400 pixels. As already amply demonstrated by the past and present operative planetary space missions, an imaging spectrometer of this type can span a wide range of scientific objectives, from the surface through the atmosphere and exosphere. MAJIS is then perfectly suitable for a comprehensive study of the icy satellites, with particular emphasis on Ganymede, the Jupiter atmosphere, including its aurorae and the spectral characterization of the whole Jupiter system, including the ring system, small inner moons, and targets of opportunity whenever feasible. The accurate measurement of radiance from the different targets, in some case particularly faint due to strong absorption features, requires a very sensitive cryogenic instrument operating in a severe radiation environment. In this respect MAJIS is the state-of-the-art imaging spectrometer devoted to these objectives in the outer Solar System and its passive cooling system without cryocoolers makes it potentially robust for a long-life mission as JUICE is. In this paper we report the scientific objectives, discuss the design of the instrument including its complex on-board pipeline, highlight the achieved performance, and address the observation plan with the relevant instrument modes.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s11214-024-01057-2

Authors



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Funder identifier:
https://ror.org/034zgem50
Grant:
2023-6-HH.0
2021-18-I.0
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Funder identifier:
https://ror.org/01fapfv42
Grant:
PEA 4000124255
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Funder identifier:
https://ror.org/02feahw73
Grant:
180 117


Publisher:
Springer
Journal:
Space Science Reviews More from this journal
Volume:
220
Issue:
3
Article number:
27
Publication date:
2024-03-19
Acceptance date:
2024-02-23
DOI:
EISSN:
1572-9672
ISSN:
0038-6308


Language:
English
Keywords:
Pubs id:
1942786
Local pid:
pubs:1942786
Deposit date:
2024-10-09

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