Variation of Evening Zenith Sky Twilight Brightness and Colour at Abu-Simbel during Spring

Details Variation of Evening Zenith Sky Twilight Brightness and Colour at Abu-Simbel during Spring Variation of Evening Zenith Sky Twilight Brightness and Colour at Abu-Simbel during Spring

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995em%26p...70..123n&link_type=abstract

Earth, Moon and Planets, v. 70, UN/ESA Workshops Vol. 5, p. 123-131.

Computer Science

Scientific paper

Photoelectric zenith sky twilight brightness measurements have been carried out at Abu-Simbel site during spring season 1980 using blue, yellow and red filters. The results are reduced to deduce for the site the variation of the zenith sky twilight brightness in absolute units with sun's depression. The colour indices variation (B - V) and (B - R) with sun's depression are deduced from these results. Comparison is carried out between the present result and that deduced at Helwan and Daraw.

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