Accession Number : AD0603212

Title :   ECLIPSE OBSERVATIONS FROM A JET AIRCRAFT,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : KOCHER,G. E.

Report Date : JUL 1964

Pagination or Media Count : 1

Abstract : This memorandum describes an experiment in which highaltitude observations of a total solar eclipse were made from a modified jet airliner. A program of photographic photometry of the outer corona was prepared. Photographs in two broad spectral ranges were obtained with two cameras operated during totality. The cameras were manually guided to = 3 minutes of arc during exposures ranging from 1/10 second to 10 seconds. Although good pictures were obtained of the inner corona, the photometry was not successful, primarily due to the unavoidable substitution of a Plexiglas window for the glass optical flat originally planned. However, it was demonstrated that very cheap manual guiding can provide suitable pointing accuracy for many experiments, and that under similar conditions it should be possible to guide manually to = 4 minutes of arc over the entire duration of totality. The advantages of using such an aircraft for this purpose are listed, as well as some problems and recommendations for future aerial expeditions. (Author)

Descriptors :   (*SOLAR ECLIPSES, PHOTOGRAPHY), PHOTOGRAPHIC EQUIPMENT, JET AIRCRAFT, PHOTOMETERS, PHOTOGRAPHS, SOLAR CORONA, ASTROPHYSICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE