AN INTRODUCTION TO THE PROBLEM OF PHOTOGRAPHING ARTIFICIAL SATELLITES
WRIGHT AIR DEVELOPMENT DIV WRIGHT FIELD OH
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Some basic information useful for obtaining photographic recordings of celestial bodies, especially artificial satellites, is presented in this paper for the benefit of those who are not very familiar with astronomy. In the present space age this information may be quite helpful to those who are not trained in astronomy, but who are working in related fields. The historical origin of the magnitude system is discussed and basic equations are developed that will permit calculation of an approximate value of the exposure time necessary for different situations. This will give, for example, those who employ electronic detection methods a means of determining the order of photographic exposure time so that the speed made possible by electronic methods may be compared with the conventional photographic speed.
- Unmanned Spacecraft