Saturn's Aurora, Airglow, and Extended Atmosphere

Details Saturn's Aurora, Airglow, and Extended Atmosphere Saturn's Aurora, Airglow, and Extended Atmosphere

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5219t&link_type=abstract

HST Proposal ID #5219

Physics

Hst Proposal Id #5219 Solar System Giant Planets

Scientific paper

This proposal is for far-UV imaging of Saturn's aurora and airglow emissions, primarily from H Ly alpha (1216 A) and the H2 Lyman and Werner bands (900-1650 A). We will determine the extent and spatial distribution of the UV auroral oval emissions in the northern polar region, believed to be at high magnetic latitudes. With the north pole tilted toward the Earth, we can image the entire northern auroral oval. The airglow emissions will appear brightest near the limb, where we can obtain an altitude resolution of 760 km/WF pixel. The changes in the airglow near the ring shadow region will be particularly interesting in determining the source of the known enhanced electron-excited emissions from the outer planets. These observations constitute the first phase on this WFPC2 GTO program on Saturn's upper atmosphere and rings.

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