The sky brightness when the rising sun is in eclipse

Details The sky brightness when the rising sun is in eclipse The sky brightness when the rising sun is in eclipse

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cha%26a..23..249l&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 23, Issue 2, p. 249-257.

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

Part of the ``Xia-Shang-Zhou Chronology Project'' is the study of a historical record of ``double dawn'' and its astronomical interpretation. We used the light meter on ordinary cameras to determine the sky variation during normal sunrises and sunsets, set up a way of calculating the variation when the rising sun is in eclipse, and identified the range and intensity of the double dawn phenomenon. For this, we organized a mass participation of the observation of the 1997-03-09 eclipse in Xinjiang Province. The observations are in good agreement with our model calculation and prove that an eclipsed sunrise could indeed give rise to the phenomenon of ``double dawn''

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