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The angular diameter of Regulus from the 28 March 1980 CTIO occultation
The Astronomical Journal1981Vol. 86, pp. 1685–1685
Abstract
On 28 March 1980 an occultation of Regulus (= alpha Leo) was observed in two colors from Cerro Tololo Inter-American Observatory. The best-fit uniform disk angular diameters (in milliarcseconds) derived from these data are 1.32 + or - 0.2 (yellow channel, lambda = 5768 A) and 1.37 + or - 0.11 (blue channel, lambda = 4356 A), in excellent agreement with the measurement obtained through intensity interferometry and in reasonable agreement with a daytime occultation observed at Kitt Peak National Observatory.
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