Some photometric properties of the Martian south polar cap region during the 1971 apparition |
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Authors: | Kari Lumme Philip B James |
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Institution: | 1. Observatory, University of Helsinki, SF-00130 Helsinki 13, Finland;2. Planetary Research Center, Lowell Observatory, Flagstaff, Arizona 86001, USA |
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Abstract: | High-quality Earth-based photographs from the Lowell Observatory Planetary Research Center collection have been analyzed to derive some photometric parameters for the Martian south polar cap region during the 1971 apparition. The optical thickness of the atmosphere above the cap varied with wavelength from 0.35 ± 0.05 in red light to 0.58 ± 0.06 inuv light. The effective geometric albedo is calculated from the 30° phase data assuming isotropic scattering; it varies from 0.85 ± 0.04 (in red light) to 0.63 ± 0.05 (in uv light). |
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