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). L channel is centered at 3.455 ?m with a 290 nm bandwidth, devoted to the auroral emission mapping. M channel is centered is at 4.780 ?m 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 ?rad. The spectrometer channel covers the 2.0-5.0 ?m 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 ?rad. In this work we derive Jupiter brightness temperature maps from both the M channel (4.780 ?m) and the spectrometer (4.6-5.0 ?m range), compare their distribution and discuss the results.
Jupiter Brightness Temperature Maps as derived from Juno/JIRAM data
Moriconi M L;Dinelli B M;Fabiano F;
2017
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). L channel is centered at 3.455 ?m with a 290 nm bandwidth, devoted to the auroral emission mapping. M channel is centered is at 4.780 ?m 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 ?rad. The spectrometer channel covers the 2.0-5.0 ?m 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 ?rad. In this work we derive Jupiter brightness temperature maps from both the M channel (4.780 ?m) and the spectrometer (4.6-5.0 ?m range), compare their distribution and discuss the results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
