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| Titel |
The Jovian Infrared Auroral Mapper (JIRAM) |
| VerfasserIn |
Angioletta Coradini, Alberto Adriani, Gianrico Filacchione, Davide Grassi, Maria Luisa Moriconi, Bianca Maria Dinelli, Raffaella Noschese, Andrea Cicchetti, Claudio Pasqui, Alessandro Bini |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250052155
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| Zusammenfassung |
| In this presentation we describe the main scientific objectives of JIRAM (Jovian InfraRed Auroral Mapper) and its technical development.
The JIRAM instrument has a twofold objective:
- To perform imaging of Jupiter, especially around the polar regions, in a 2-5 μm band, where most of the auroral emission occurs
- To perform co-located spectroscopy and imaging of selected regions of the Jupiter's atmosphere in the 2-5 μm band with medium spectral resolution
The JIRAM experiment heritage comes from Italian made VIS-NIR imaging spectrometers dedicated to planetary exploration (Cassini/VIMS-V, Rosetta and VenusExpress/VIRTIS, Dawn/VIR-MS). However JIRAM needed a new development, being the first of a new class of experiments. JIRAM is characterized by two channels : one devoted to spectroscopy and another devoted to imaging. The light entering from a common telescope is divided by a beam splitter. This configuration allows a great flexibility in the use of JIRAM. In fact, we can obtain simultaneous images in the L and M bands combined , when needed, with imaging spectroscopy of the planet in the 2.0-5.0 µm interval of wavelengths with a spectral resolution better than 10 nm. State of the art technical solutions were implemented. Particular attention has been paid to the calibration of the instrument: a newly designed calibration unit has been included in the instrument, that allows to perform the radiometric calibration "in-flight". |
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