A new determination of the granule/intergranule contrast

Autor:	R. J. Bray, R. E. Loughhead
Rok vydání:	1977
Předmět:	Physics Photosphere business.industry Granule (solar physics) Astronomy and Astrophysics Astrophysics Solar physics Light scattering Cell size law.invention Telescope Optics Space and Planetary Science law Refracting telescope Scattered light business
Zdroj:	Solar Physics. 54:319-326
ISSN:	1573-093X 0038-0938
DOI:	10.1007/bf00159922
Popis:	A new determination of the granule/intergranule contrast is described, based on high-quality photographs taken with the Culgoora refractor operating in its photospheric mode. The measurements are corrected for scattered light and for spatial smearing due to telescope and atmosphere. The contrast calculated on the basis of the Utrecht Reference Photosphere lies just outside the range of possible values permitted by the present observations, 0.76 ⩽ C⩽ 0.81 at λ5500. New determinations of the mean cell size of the granulation pattern (= 1″.9 of arc) and of the distribution of cell sizes are also presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a714661edfbe7a45c3d283352f461078 https://doi.org/10.1007/bf00159922 Zobrazit plný text záznamu Full text from SpringerLink