Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986plas.rept..114n&link_type=abstract
In NASA, Washington Reports of Planetary Astronomy, 1985 p 114-117 (SEE N87-12407 03-89)
Astronomy and Astrophysics
Astronomy
Cometary Atmospheres, Halley'S Comet, Infrared Spectroscopy, Spectral Emission, Thermal Radiation, Atmospheric Scattering, Brightness, Cosmic Dust, Wavelengths
Scientific paper
Since 1969 every bright comet was measured which has reached a distance of one astronomical unit from the sun. Observing techniques were developed which make it possible to observe as close as elongation 3 deg., and to find, track and measure comets at all wavelengths in full daylight. Comet Halley was measured on twenty four occasions between December 12, 1985 and March 25, 1986. Clear weather seems to come on holidays, and days on which are observed including Winter Solstice, Christmas, New Years, Valentines day, Super Bowl Sunday and the Vernal Equinox. Halley is observed within hours of perihelion passage.
Gehrz Robert D.
Net E. P.
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