Numerical estimates of luminance and total brightness of the terrestrial halo

by Roger Chandler Moore, G. F. Schilling


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In space, when viewed from within the terrestrial shadow, the earth will appear to be surrounded by a luminous halo that is caused by refraction and multiple scattering of sunlight in the atmosphere. This memorandum predicts quantitatively the brightness of this halo for a distant observer viewing the earth as a planet. The problem is still unsolvable analytically, and all results stem from the application of a semiempirical method described in the authors' RM-4557, "Eclipse Observations from Orbiting Spacecraft."

This report is part of the RAND Corporation Research memorandum series. The Research Memorandum was a product of the RAND Corporation from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.

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