Comet Halley imaging from Catania Observatory (Italy)

Details Comet Halley imaging from Catania Observatory (Italy) Comet Halley imaging from Catania Observatory (Italy)

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250c.127f&link_type=abstract

In ESA, Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 3: Posters p 127-132 (SEE N87-26714

Astronomy and Astrophysics

Astronomy

Astronomical Photography, Gas Density, Halley'S Comet, Rotation, Carbon, Charge Coupled Devices, Molecular Spectroscopy, Schmidt Cameras, Space Observations (From Earth), Spatial Distribution, Water Vapor

Scientific paper

A large number of CCD images of comet Halley and Schmidt plates were taken at Catania Observatory from October 1985 to May 1986. Preliminary results show evidence of jets rotating with a period T ≡ 52.5 hours. The gas density falls off with distance as r-2. The ground images taken close to the Giotto fly-by show evidence of boundaries observed "in situ" by Giotto and Vega. The observed different spatial distribution of H2O+ and C2 is discussed in terms of the origin of either molecule.

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