Ten micron imaging of Comet Austin

Details Ten micron imaging of Comet Austin Ten micron imaging of Comet Austin

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.315..183l&link_type=abstract

In ESA, Formation of Stars and Planets, and the Evolution of the Solar System p 183-185 (SEE N91-18922 10-90)

Computer Science

Brightness, Comets, Cosmic Dust, Image Analysis, Particle Size Distribution, Comet Heads, Comet Nuclei, Comet Tails, Imaging Techniques

Scientific paper

Images of comet Austin, in the 8 to 13 micrometer broadband filter, were obtained at the 3.6 m Canada-France-Hawaii Telescope on 1990 May 6.6 UT, using the C 10 micrometer camera. These images provide information on the dust distribution in the inner coma up to 4000 km from the nucleus, with a spatial resolution of 250 km (angular resolution per pixel: 0.8 arc s). A preliminary analysis of the comet morphology does not indicate deviation from a symmetrical geometry. The surface brightness has a pixel peak of 1.5 Jy and a radial distribution compatible with a 1/d law, for a beam diameter ranging from 1 to 24 arc s. Some indication of a steepening of the distribution at higher distances can be inferred from the data.

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