Abstract
THE following observations may be useful to some of your readers:—On June 25 the comet was compared five times with the star O.A. 3268, with a ring micrometer (power 35); on June 28 it was compared eight times with the star Dm + 71°, 184 by means of a bar reticule with power 70. The comet has a bright spot near the centre which, on June 25, seemed to me to be nearly equal to a ninth magnitude star; but on June 28 it was much fainter, although easy to observe with precision after 11h. 30m. The diameter appears to be 2′ or 3′ in my telescope (of 4½ inches aperture) but I cannot see any trace of the tail mentioned by Mr. Swift. The comet is, however, immersed in the twilight now existing at midnight.
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TUPMAN, G. Comet 1879 c (Swift). Nature 20, 218 (1879). https://doi.org/10.1038/020218c0
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DOI: https://doi.org/10.1038/020218c0
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