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Light Pollution and Energy Loss from Cairo

Published online by Cambridge University Press:  13 May 2016

A. I. I. Osman ,
S. Isobe ,
S. Nawar  and
A. B. Morcos
A. I. I. Osman
Affiliation:
National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt E-mail : aibrosman@frcu.eun.eg
S. Isobe
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo, Japan E-mail : isobesz@cc.nao.ac.jp
S. Nawar
Affiliation:
National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt
A. B. Morcos
Affiliation:
National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt

Abstract

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Light pollution is a serious problem, not only to astronomy but also to the environment and the economy. The amount of light energy loss from Cairo has been calculated using data obtained at Kottamia Observatory in 1980 and 1995. The amount of energy loss is much greater in 1995. Comparison with a number of other world cities is given. These results show that much money is being wasted. Recommendations to overcome the problem, and the corresponding savings, are given.

Type
Part 2. Threats to Optical Astronomy
Information
Symposium - International Astronomical Union , Volume 196: Preserving the Astronomical Sky , 2001 , pp. 107 - 110
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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