Jiram: An Image Spectrometer in the Near Infrared Proposed as Contribution to The Nasa Juno Mission to Jupiter.

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JIRAM, the Jovian InfraRed Auroral Mapper, has been proposed as integration of the payload of the NASA New Frontiers mission Juno to Jupiter to be launched in 2011. JIRAM is designed to obtain high spatial resolution images of the Jupiter atmosphere and to retrieve its spectral properties in the 2.0-5.0 micron range. JIRAM, sharing a single telescope, between an infrared camera and a spectrometer will allow a large observational flexibility in obtaining at the same time simultaneous images in the L and M bands with the spectral radiance over the central zone of the images. Moreover, it is able performing spectral imaging of the planet. Instrument design, modes and observation strategy will be optimized for operations aboard a spinning satellite in polar orbit around Jupiter.
JIRAM scientific objectives are: (a) to explore the dynamics and chemistry of Jovian auroral regions by high contrast imaging and spectroscopy; (b) to study Jovian hot spots through the troposphere so as to determine vertical structure and hence test formation mechanisms; and (c) to sound the Jupiter atmosphere to map water moist convection and determine the abundance of water and other constituents at depths corresponding to the water clouds.

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