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Haute-Provence Observatory Image of Comet Hale-Bopp

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Observer: Olivier Lardiere
Location: Haute-Provence Observatory, France
Date: January 30, 1997 06:00 UT

I have observed Hale-Bopp with the 80cm at F/D=15 telescope of Haute-Provence Observatory (France). The CCD images shown a series of concentric hoods. To enhance these hoods, I use the rotational gradient algorithm (S.M.Larson and Z. Sekanina, Astr.J. April 1984). A similar concentric structure has already been observed in Hyakutake comet. Some specialists think that shock waves are the origin of this concentric morphology.

Olivier LARDIERE
Observatoire de Haute-Provence
F-04870 St-Michel-l'Observatoire
FRANCE
Tel:(33).4.92.70.64.00
e-mail: lardiere@obs-hp.fr


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