Photoelectric Analysis of the Solar Granulation in IR

摘要

Results of both image analysis and statistical analysis of 1D scans the IRgranulation observed in the opacity minimum region are briefly presented. The same technique was applied at 600 nm and results partially presented by Koutchmy and Lebecq, 1986, Astron. Astrophys. 169, 323. All observations were collected at the prime focus of the Sac Peak VTT using high signal-to-noise ratio measurements with a specially-designed pinhole PbS spectrophotometer; imaging has been made using both 2D scanning of the telescope and processed video-scans of an IR-vidicon. Images of the IR granulation and of sunspot umbral dots and penumbral filaments are present for the first time.