Sky twilight brightness at zenith expressed in magnitudes
Nawar, S., Morcos, A., El Agmy, R., Gad, G., Elgohary, S. (2020). Sky twilight brightness at zenith expressed in magnitudes. EKB Journal Management System, 9(1), 63-70. doi: 10.1080/20909977.2020.1714176
S. Nawar; A.B. Morcos; R.M. El Agmy; G.M.A. Gad; Samar Elgohary. "Sky twilight brightness at zenith expressed in magnitudes". EKB Journal Management System, 9, 1, 2020, 63-70. doi: 10.1080/20909977.2020.1714176
Nawar, S., Morcos, A., El Agmy, R., Gad, G., Elgohary, S. (2020). 'Sky twilight brightness at zenith expressed in magnitudes', EKB Journal Management System, 9(1), pp. 63-70. doi: 10.1080/20909977.2020.1714176
Nawar, S., Morcos, A., El Agmy, R., Gad, G., Elgohary, S. Sky twilight brightness at zenith expressed in magnitudes. EKB Journal Management System, 2020; 9(1): 63-70. doi: 10.1080/20909977.2020.1714176

Sky twilight brightness at zenith expressed in magnitudes

NRIAG Journal of Astronomy and Geophysics
Volume 9, Issue 1, January 2020, Pages 63-70    PDF (1.85 M)
DOI: 10.1080/20909977.2020.1714176
Authors
S. Nawar; A.B. Morcos; R.M. El Agmy; G.M.A. Gad; Samar Elgohary
Abstract
Most of the previously published results of the zenith sky twilight brightness, obtained by different investigators, are given in different units. These results have been converted to (mag/arcsec) to make a comparison between them. The variation of the colour indices (B-V) and (B-R) of the zenith sky twilight with the sun’s depression will be studied. The present photometric results of the zenith sky twilight brightness expressed in mag/arcsec, have been obtained for the first time for blue, yellow and red colours.
Keywords
Twilight; brightness; zenith; mag/arcsec
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