Spatial distribution of 6300A emission determined from narrow-band images of Halley's Comet

Details Spatial distribution of 6300A emission determined from narrow-band images of Halley's Comet Spatial distribution of 6300A emission determined from narrow-band images of Halley's Comet

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.413r&link_type=abstract

In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 413-415 (SEE N87

Physics

1

Halley'S Comet, Optical Emission Spectroscopy, Oxygen Spectra, Spatial Distribution, Comet Heads, Fabry-Perot Interferometers, Photodissociation

Scientific paper

In March 1986 the Wisconsin dual-etalon Fabry-Perot spectrometer was adapted for use with an intensified CCD imaging detector. Several good quality images of [O I] 6300 Å emission from a 10 arcmin field centered on the comet head were obtained in April and May 1986. The 10 km/s bandpass was adequate to eliminate spectral contamination from cometary NH2 and, with appropriate doppler shifts, terrestrial airglow. The observed distribution of [O I] emission indicates O1D production from two sources, presumably photodissociation of H2O and OH. Scale lengths are determined for the distributions of these sources in the coma.

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