The Use of Small Telescopes for Spectral Imaging of Low-light-level Extended Atmospheres in the Solar System

Details The Use of Small Telescopes for Spectral Imaging of Low-light-level Extended Atmospheres in the Solar System The Use of Small Telescopes for Spectral Imaging of Low-light-level Extended Atmospheres in the Solar System

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009em%26p..105..107b&link_type=abstract

Earth, Moon, and Planets, Volume 105, Issue 2-4, pp. 107-113

Physics

2

Planetary Exospheres, Sodium, Coronagraphic Imaging

Scientific paper

A 10-cm aperture telescope equipped with coronagraphic capabilities, using occulting masks of various size and material, has been developed to obtain low-light-level, wide-angle (~7o FOV), narrow-band filtered images of sodium exospheres at Io, the Moon and Mercury. Here we describe new instrument capabilities and recent findings about the extraordinarily long tails of sodium gas discovered in the lunar and hermean exospheres. Spatial and temporal variability patterns captured in such images can be used to study changes in surface sputtering processes and radiation pressure acceleration effects in the inner solar system.

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