Mapping and monitoring of Io's hot spots by use of the ESO Adaptive Optics system.

Details Mapping and monitoring of Io's hot spots by use of the ESO Adaptive Optics system. Mapping and monitoring of Io's hot spots by use of the ESO Adaptive Optics system.

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999dps....31.7402p&link_type=abstract

American Astronomical Society, DPS meeting #31, #74.02

Physics

Optics

Scientific paper

Both sides of Io have been observed on several occasions in 1996, 1998 and 1999, using the high resolution capability of the Adaptive Optics (AO) system implemented on the ESO 3.6 m telescope at La Silla, Chile. These observations performed at thermal IR wavelengths, through the L' broadband filter (3.8 mu m) when Io is in daylight, have been carefully processed to restore the sharpness of the initial images up to the telescope diffraction limit. The myopic deconvolution process applied idac archieves an angular resolution estimated to ~ 0.15 arcsec, corresponding to a spatial resolution of ~ 350-400 km on Io's central meridian. The resulting composite maps, including the antijovian face of Io, show various bright features which are compared with the Galileo/NIMS data. We will also addresss the temporal variability of Io's volcanic activity.

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