Accession Number : AD0250928

Title :   MEASUREMENTS OF THE SUN'S LIMB FOR THE DETERMINATION OF REFRACTION BETWEEN 80 DEGREES AND 90 DEGREES ZENITH DISTANCE

Corporate Author : GEORGETOWN COLL WASHINGTON D C OBSERVATORY

Personal Author(s) : DE KORT,JULES

Report Date : 30 SEP 1960

Pagination or Media Count : 1

Abstract : The annular solar eclipse of Dec 14, 1955, was observed by joint Georgetown and Air Force groups from various stations, the first of which was Khartoum, Africa. The sun rose at Khartoum partially eclipsed. The pre-eclipse material, which had served to solve the practical problems of observation, comprised both morning and evening exposures of the sun at low altitudes. They were made on Kodalith 2-1/4 x 3-1/4 in. plates. The solar diameter is about 19mm on the plates. Of this material 52 plates were measured, together with 73 eclipse plates. The measurements were performed on the Telereadex machine of Georgetown Observatory. (Author)

Descriptors :   *SOLAR ECLIPSES, MEASUREMENT, SOLAR CORONA

Distribution Statement : APPROVED FOR PUBLIC RELEASE