Abstract
Photoelectric observations of night sky brightness at different zenith distances in blue, yellow and red colours have been carried out at Abu-Simbel site. Variations in the night sky brightness and (B-V) colour index with time are detected. These variations have been explained by the change of the galactic latitude of the observed point with time. The deduced results of night sky brightness have been compared with that obtained before at other sites. It has been found for both blue and yellow colours, that Abu-Simbel is the darkest site especially for zenith distances equal or greater than 60°. The present values of night sky brightness and colour have been obtained for the first time at Abu-Simbel site. The average night sky brightness at the galactic plane is 22.58 mag/arc sec2 for blue and 21.66 mag/arc sec2 for yellow.
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References
Leinert, C., Vaisanen, P., Mattila, K. and Lehtienen, K.: 1995, Astron. Astrophys. 112, 99.
Massey, P., Gronwall, C. and Pilachowski, C.A.: 1990, Publ. Astron. Soc. Pacific 102, 1046.
Nawar, S.: 1999, in publication.
Nawar, S. and Morcos, A.B.: 1997, Astrophys. Space Sci. 251, 1.
Neizvestnyi, S.I.: 1982, Bull. Spec. Astrophys. Obs.-North Caucasus (USA) 16, 41.
Pilachowski, C.A., Africano, J.L., Goodrich, B.D. and Binkert, W.S.: 1989, Publ. Astron. Soc. Pacific 101, 707.
Walker, M.F.: 1973, Publ. Astron. Soc. Pacific 85, 508.
Walker, M.F.: 1988, Publ. Astron. Soc. Pacific 100, 496.
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Nawar, S., Morcos, A. & Mikhail, J. Night Sky Brightness and Colour at Different Zenith Distances at Abu-Simbel Site. Astrophysics and Space Science 262, 485–496 (1998). https://doi.org/10.1023/A:1001854214366
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DOI: https://doi.org/10.1023/A:1001854214366