Accession Number : AD0737388

Title :   Astronomical Refraction: Computational Method for All Zenith Angles.

Descriptive Note : Technical rept.,

Corporate Author : YALE UNIV NEW HAVEN CONN DEPT OF ASTRONOMY

Personal Author(s) : Auer,Lawrence H. ; Standish,E. Myles , Jr

Report Date : FEB 1972

Pagination or Media Count : 16

Abstract : It is shown that the problem of computing astronomical refraction for any value of the zenith angle may be reduced to a simple, non-singular, numerical quadrature when the proper choice is made for the independent variable of integration. The angle between the radius vector and the light ray is such a choice. The implementation of the quadrature method is discussed in its general form and illustrated by means of an application to a piecewise polytropic atmosphere. The flexibility, simplicity and computational efficiency of the method is evident. (Author)

Descriptors :   (*ATMOSPHERIC REFRACTION, MATHEMATICAL ANALYSIS), ATMOSPHERE MODELS, REFRACTIVE INDEX, NUMERICAL ANALYSIS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE