DATA FOR THE CALCULATION OF TWILIGHT OBSERVATION PROGRAMMES.
Abstract
A general solution is given to the problem of constructing twilight programmes so that the direction of observation may intersect the boundary between dark and illuminated regions of the atmosphere at a specified height above the surface of the earth. Atmospheric refraction and absorption and the angular extent of the sun are neglected. These quantities must be taken into account separately. Curves giving the results of calculations from the twilight equations are reproduced. These curves are sufficient for the construction of twilight programmes for heights between 30 and 560 km. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1965
- Accession Number
- AD0622440
Entities
People
- A. Vallance Jones
Organizations
- University of Saskatchewan