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On the width distribution of penumbral filaments in sunspots

✍ Scribed by J. A. Bonet; J. D. Ponz; M. Vazquez

Publisher
Springer
Year
1982
Tongue
English
Weight
586 KB
Volume
77
Category
Article
ISSN
0038-0938

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✦ Synopsis

The mean width and distribution of penumbral filaments of a sunspot have been estimated, using white light photographs obtained with a vacuum, Newtonian type, telescope. Three areas corresponding to the penumbra of a sunspot have been analysed. Data were collected during the solar eclipse of June 1973. The photometric profiles of the Moon limb over the photosphere have been analysed to obtain useful information on both, atmospheric and instrumental perturbation on each exposure. The mean value of the width of penumbral filaments is 0.37 arc sec.

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