ATMOSPHERIC REFRACTION AT LOW ANGULAR ALTITUDES IN THE TROPICS

Charles H. Smiley

Peer Reviewed

Abstract:	In 1947, a party of nine astronomers bound for Brazil to observe the total solar eclipse of May 20 made a series of observations of the vertical diameter of the sun when the latter was near the horizon. Between April 22 and May 13, 7,537 observations were made on fifteen mornings and seventeen afternoons. Returning, seven observers made 5,984 observations on fifteen mornings and fourteen afternoons in the interval June 11 to June 30. Besides these 13,500 measures of vertical diameters, some 1,500 measures were made of altitudes for position determination. This paper concerns the reduction of those 15,000 observations and the preparation of the refraction tables below.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 2, Number 5
Pages:	110 - 113
Cite this article:	Smiley, Charles H., "ATMOSPHERIC REFRACTION AT LOW ANGULAR ALTITUDES IN THE TROPICS", NAVIGATION: Journal of The Institute of Navigation, Vol. 2, No. 5, 1950, pp. 110-113.
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