PHOTOMETRY OF SOLAR FLARES
Abstract
The results of the photometric processing of solar flares of importance equal to or greater then 2, observed from October 1957 to the end of 1959, are given. The observations were made at a high-mountain coronal station, 2600 m above sea level, in the region of Great Alma-Ata Lake, with the aid of the type-AFR-2 chromosphere-photo sphere telescope. The motion picture was made in the hydrogen alpha line with an interference polarization filter having a pass-band width of 0.6 A. Standard 35-mm panchromatic high-sensitivity (1000- 1200 GOST Units) photographic film was used. The rate of filming was 2 frames a minute (sometimes 8 or 4). Standardization and calibration were effected through the insertion of a reducing screen with nine degrees of transparency, illuminated by the solar disk. In accordance with international instructions, the screen was inserted during normal, twice-normal, and fmes-normal exposures. The films were developed using the standard contrast-type fine grain developer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 17, 1963
- Accession Number
- AD0403860
Entities
Organizations
- Library of Congress