The planet Mercury: Synthesis of resolved images of unknown part in the longitude range 250 290°W

Details The planet Mercury: Synthesis of resolved images of unknown part in the longitude range 250 290°W The planet Mercury: Synthesis of resolved images of unknown part in the longitude range 250 290°W

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005p%26ss...53..849k&link_type=abstract

Planetary and Space Science, Volume 53, Issue 8, p. 849-859.

Astronomy and Astrophysics

Astrophysics

12

Scientific paper

Plans to send orbiter missions to Mercury (e.g., NASA's Messenger and ESA's BepiColombo) have prompted renewed efforts to investigate the surface of Mercury using ground-based remote sensing. While the highest resolution instrumentation optical telescopes (e.g. HST) cannot be used at small angular distances (<45°) from the Sun (Mercury's elongation never exceeds 28° seen from Earth), advanced ground-based astronomical techniques and modern processing software can be used to construct resolved images of the poorly known part of Mercury. Our observations of the planet presented here were carried out mainly in April and May, 2002, at evening elongation of the planet, at the Skinakas astrophysical observatory of Heraklion University (Crete, Greece). A synthesis of the acquired images of the hemisphere of Mercury, which was not observed by the Mariner 10 mission (1974 1975), is presented. A double rim basin with an internal diameter of about 1000 km and an external rim about 2000 km is suggested by the data. We present the observational method, the data analysis approach, and the resulting images.

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