Abstract
THE results obtained at the total solar eclipse of May 29 last were reported at a joint meeting of the Royal and the Royal Astronomical Societies, held on November 6. The stations occupied were Sobral, in North Brazil, and Principe Island. Two cameras were employed at Sobral, the 13-in. objective of the Greenwich astrographic equatorial, and a 4-in. lens, of ig-ft. focus, lent, together with an 8-in. ccelostat, by the Royal Irish Academy. It was realised, before the expedition started, that the ccelostat was scarcely suitable for observations of such extreme precision as were required to detect and measure the small shift in the places of the stars that might be produced by the sun's attraction. War conditions, however, made it impossible to construct a suitable equatorial mounting, though it is hoped that this may be done before the eclipse of 1922.
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CROMMELIN, A. Results of the Total Solar Eclipse of May 29 and the Relativity Theory . Nature 104, 280–281 (1919). https://doi.org/10.1038/104280a0
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DOI: https://doi.org/10.1038/104280a0