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Proposed magnetic and allied observations during the total solar eclipse of September 10, 1923

1923; Volume: 28; Issue: 1-2 Linguagem: Inglês

10.1029/te028i001p00029

2379-5697

Louis A. Bauer, J. A. Fleming,

History and Developments in Astronomy

Special magnetic and allied observations will be made at stations inside and outside the shadow belt of the total solar eclipse of September 10, 1923, by the Department of Terrestrial Magnetism of the Carnegie Institution of Washington, and by various co‐operating magnetic observatories, institutions, and individuals. The distribution of the magnetic observatories within the limits of the eclipse and on both sides of the belt of totality is shown by the accompanying map taken from the American Ephemeris and Nautical Almanac for 1923 and on which the positions of these observatories have been indicated. The observatories, either within or near the limits of the eclipse, are: North of the belt of totality, Sitka (Alaska), Meanook (Alberta), Tucson (Arizona), Agincourt (Ontario), Cheltenham (Maryland), and Vieques (Porto Rico) ; to the south of the belt of totality, Honolulu (Hawaii), Cuajimalpa (Mexico), and Huancayo (Peru); while just outside the limits of the eclipse, at beginning and ending, are Kakioka (Japan) and La Quiaca (Argentina). Of the observatories, that at Tucson is particularly well situated, being only about two hundred miles from the central path of the eclipse; the maximum obscuration at Tucson will be about ninety‐two per cent. It is planned that the Department of Terrestrial Magnetism will have parties at two (possibly three) stations within the belt of totality to make magnetic and atmospheric‐electric observations. The United States Coast and Geodetic Survey will have one special party for taking magnetic observations within the belt of totality in southern California and will have special observations carried out at its observatories.