Jupiter Brightness Temperature Maps as derived from Juno/JIRAM data
Altieri, F. ; Moriconi, M. L. ; Mura, A. ; ...Plainaki, C. ; ...Olivieri, A. ; et al.
Sep - 2017

Event Title : European Planetary Science Congress 2017
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type: Conference Proceedings

Abstract
JIRAM is the InfraRed Auroral Mapper on board the Juno mission arrived at Jupiter on July 4 2016. The instrument is composed by two imager channels (L and M), and a spectrometer channel (SPE) [1]. L channel is centered at 3.455 μm with a 290 nm bandwidth, devoted to the auroral emission mapping. M channel is centered is at 4.780 μm with a 480 nm bandwidth and can sound the thermal emission from the deeper atmosphere of the planet. Their Field of View (FOV) is of the order of 1.75°×5.94° (128×432 pixels corresponding to the along and across track directions), with an Instantaneous Field of View (IFOV) of 250×250 μrad. The spectrometer channel covers the 2.0–5.0 μm range with a spectral sampling of about 8.99 nm/band. It is able to realize co-located imaging spectroscopy in the M-filter channel FOV by using a slit 256 samples-wide with a FOV of 3.52° and an IFOV of 250 μrad.In this work we derive Jupiter brightness temperature maps from both the M channel (4.780 μm) and the spectrometer (4.6-5.0μm range), compare their distribution and discuss the results.

keywords : The project JIRAM is funded by the Italian Space Agency.