Synoptic Monitoring of Seasonal Phenomena on Mars Cycle 4 - Medium

Details Synoptic Monitoring of Seasonal Phenomena on Mars Cycle 4 - Medium Synoptic Monitoring of Seasonal Phenomena on Mars Cycle 4 - Medium

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5493j&link_type=abstract

HST Proposal ID #5493

Physics

Hst Proposal Id #5493 Solar System Inner Planets

Scientific paper

One of the most serious gaps in our understanding of time variable phe nomena on Mars is the lack of a continuous, multi-year record document ing interannual variability. During HST Cycles 0 and 2 we established that HST is an ideal instrument for assembling this record; excluding only the period when elongation is less than 50 degrees, Hubble can make scientifically useful observations during the entire synodic cycle of Mars. We propose to study Mars during the period from Aug. '93 through Aug. '94, when the elongation is within prescribed limits. In order to address the scientific questions of seasonal variability we shall concentrate observations at the martian seasonal dates on which Mars was imaged during previous cycles. WFPC2 filters which are analogous to the set used with the WFPC1 program will be used to maximize continuity. These include 410M, which will be used to study atmospheric and polar phenomena; 673N, which will be used to study variations in surface albedo features; and 502N, which is often useful in distinguishing between atmospheric and surface processes. Obtaining ultraviolet pairs using 255W and 336W will have a high priority during Cycle 4; Cycle 0 observations using 230W and 336W provided excellent data constraining dust, condensate haze, and ozone in the martian atmosphere.

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