CCD imaging of the inner coma jets of comet P/Halley

Details CCD imaging of the inner coma jets of comet P/Halley CCD imaging of the inner coma jets of comet P/Halley

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc...89b&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 89-92 (SEE N93-19113 06-90)

Computer Science

Atmospheric Correction, Atmospheric Effects, Atmospheric Turbulence, Charge Coupled Devices, Cometary Atmospheres, Halley'S Comet, Image Enhancement, Imaging Techniques, Jet Flow, Telescopes, Brightness, Cosmic Dust, Spreading, Sublimation

Scientific paper

We analyze the inner coma section of a CCD image of comet P/Halley taken at 1807 UT on 13 March 1986 using a C2 filter (wavelength 5000 to 5200A, half maximum) with the 3.8 m Anglo Australian Telescope at Siding Springs, Australia. Atmospheric turbulence leads to a spreading of the image detail and this produces a blander image of the inner coma region with a slower radial decrease of brightness in comparison to the unaffected image. We remove this smearing by utilizing the point spread function of a star on the same CCD image. Jets were then revealed by removing the average background. Analysis of the jet structure enabled us to estimate the lower limit of the parent molecule velocity. This is found to be 0.3 km s-1.

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