Pre- and postperihelion photometry of Comet Halley from several observatories

Details Pre- and postperihelion photometry of Comet Halley from several observatories Pre- and postperihelion photometry of Comet Halley from several observatories

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.445s&link_type=abstract

In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 445-450 (SEE N87

Physics

Brightness Distribution, Halley'S Comet, Magnitude, Periodic Variations, Spectrophotometry, Ions, Light Curve, Neutral Gases, Space Observations (From Earth)

Scientific paper

Photoelectric observations of P/Halley were carried out during several weeks between 15 Sept. 1985 and 25 June 1986. All measurements were made using the standard IAU/IHW cometary filters. Large amplitude night-to-night changes over periods of several days superimposed on the general trend of slow brightness variation were seen. Smooth and irregular variations with a range up to 0.2 mag on time scales of several hours were observed. Present photometric scans of comet Halley through the various filters are presented. Successive integrations were made every 5 arc sec, radially from the center out to a distance of 5 arcmin, essentially along the sunward-antisunward direction and in the direction perpendicular to it.

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