Galileo PPR: Observations at Jupiter

Details Galileo PPR: Observations at Jupiter Galileo PPR: Observations at Jupiter

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.0105m&link_type=abstract

American Astronomical Society, DPS meeting #28, #01.05; Bulletin of the American Astronomical Society, Vol. 28, p.1054

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The first observations by the Galileo Photopolarimeter Radiometer since those of Shoemaker-Levy 9 in 1994 were made during the June 1996 Ganymede 1 encounter period. Jupiter's Great Red Spot was mapped as part of synoptic observations by all the remote sensing experiments; the PPR observed a region to the north and west of the GRS as well as most of the circumference of the planet near the latitude of the Galileo Probe entry site. Thermal maps of the day and night-sides of Ganymede were also obtained, as well as distant thermal observations of Io and Europa. The PPR is a single field of view device operating in photometry bands from 618 to 891 nm, isolating continuum, methane, and ammonia absorption (Russell et al, 1992). Polarimetry is performed at 410, 678, and 945 nm. Thermal IR bands spanning the range from 17 to beyond 50 mu m were selected for sounding the atmosphere using the pressure-induced hydrogen spectrum. The thermal bands also provide sensitivity to the darkside temperatures of the Galilean satellites. Ref. E. Russell et al, Space Sci. Rev. 60, p. 531 (1992).

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