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An observation program of Comet Hyakutake C/1996 B2 was conducted in the long-slit spectrometric and narrow-band imagery modes at the Observatoire de Haute Provence on March 24-25 and March 30-April 2, 1996. Images in the continuum taken on March 31, at 19 h 30 UT, show dust jets in the solar-side hemisphere and the presence of two condensations at r = 2000 and 8000 km (±200 km) along a line in the...
The evolution of the emission spectrum of C 2 molecules (Swan bands (0,0) and (1,1)) was studied with two different methods in two different comets: P/Schaumasse and P/Tempel 2. Comet P/Schaumasse was observed in February 1993 in imagery mode with the 1.20-m telescope of the Observatory of Haute-Provence (France). Three different interference filters were used, centered at 5125, 5160, and...
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