The angular diameter of Regulus from the 28 March 1980 CTIO occultation

Details The angular diameter of Regulus from the 28 March 1980 CTIO occultation The angular diameter of Regulus from the 28 March 1980 CTIO occultation

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86.1685r&link_type=abstract

Astronomical Journal, vol. 86, Nov. 1981, p. 1685-1689.

Astronomy and Astrophysics

Astronomy

5

Astrometry, Dimensional Measurement, Interferometry, Lunar Occultation, Stellar Occultation, Data Reduction, Diffraction Patterns, Limb Darkening, Random Noise

Scientific paper

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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