Abstract
R. H. STOY has described (Mon. Not. Roy. Astro. Soc., 101, 7; 1941) the chief physical features from an examination of 24 plates taken with the Cape astrographic refractor on 18 days between January 20 and March 6. The plates were projected on to a piece of paper with the aid of an enlarging lens and a 500-watt lantern, the main features of the comet being then sketched in. The orientation of the drawing and position angles were derived from the lines, the positions of which were known, and when these had been completed an attempt was made to match the outlines of the observed caps by known curves.
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PHYSICAL FEATURES OF COMET 1941c (DE KOCK). Nature 149, 144–145 (1942). https://doi.org/10.1038/149144a0
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DOI: https://doi.org/10.1038/149144a0