Other
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7176s&link_type=abstract
HST Proposal ID #7176
Other
Hst Proposal Id #7176 Solar System
Scientific paper
Speculation has long held that a ring of dust particles, sputtered off the dusty surfaces of Phobos and Deimos, must lie in the equatorial plane of Mars. The Earth will pass through the Mars equatorial plane on 2 November 1997. However, because the 50D sun-angle constraint is reached on 14 October, the Earth will be 7D out of the equatorial plane of Mars at the time of the observation. No other opportunities exist within the expected lifetime of NICMOS, so we will attempt the observation in October 1997, with the hope that it can be carried out as late as possible. Three spectral regions are selected to characterize the spectrophotometric properties of the dust and compare them with those of Phobos and Deimos. One lies in the CO_2 absorption band, which will help suppress scattered light from Mars.
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