Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..249r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 187, no. 1-2, Nov. 1987, p. 249-255. Research supported by the University of N
Astronomy and Astrophysics
Astrophysics
6
Astronomical Spectroscopy, Cometary Atmospheres, Halley'S Comet, Spectrum Analysis, Visible Spectrum, Charge Coupled Devices, Data Acquisition, Molecular Spectra, Radio Telescopes, Temporal Resolution
Scientific paper
Observations using a fast CCD and custom-built Video Data Acquisition System at the Nasmyth focus of the 2.3 meter telescope at Siding Spring Observatory, Australia, produced digitized spectra and images of comet Halley. On March 25 (UT), an overall brightening and antisunward jet was recorded continuously over several hours and is shown to be consistent with the enhanced spectral activity recorded on March 24 (UT). The outburst is consistent with the Giotto measurements. A preliminary analysis of the spectral enhancement of March 24 is presented. The time resolution system allowed a spectral range from 3800 A to 7000 A to be analyzed every 1/2 s. Indications of unexplained rapid variations in several molecular emission band persist and are noted.
Baumbaugh A. E.
Baumbaugh B.
Kern James R.
Rettig Terrence W.
Ruchti Randal
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