Cover: Numerical estimates of luminance and total brightness of the terrestrial halo

Numerical estimates of luminance and total brightness of the terrestrial halo

Published 1965

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."

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