Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980s%26w....19..142f&link_type=abstract
Sterne und Weltraum, vol. 19, Apr. 1980, p. 142-144. In German.
Astronomy and Astrophysics
Astronomy
Astronomical Photography, Spectroheliographs, Sunspots, Daytime, Solar Observatories
Scientific paper
Six periods of light-to-darkness (and reverse) sunspot observations
carried out between March and August 1979 are discussed. Each period is
examined and the results of its study are presented.
Fritz U.
Treutner H.
Vogt O.
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