Accession Number : AD0661564

Title :   APPLICATIONS OF THE SEQUENTIAL LIGHT AMPLIFIER TO ASTRONOMY AND RELATED PROBLEMS,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Gebel,Radames K. H. ; Hayslett,Roy R. ; Wylie,Lloyd R.

Report Date : AUG 1967

Pagination or Media Count : 34

Abstract : The recording speed of a well-built sequential light amplifier is determined by comparison with photographic films and found to be about 10 to the 7th power ASA. Therefore, for the next favorable opposition of Mars, exposure times of one milli-second become possible for pictures in color or in a narrow spectral region (delta lambda = 100A) when using a 200 inch telescope. The light amplifier permits contrast enhancement in the pictures and the short exposure times should yield sharper pictures, since the effect of changes in the diffraction of the air may, to a large extent, be avoided in this way. It is calculated that the absolute theoretical limit of the sequential light amplifier as determined by quantum mechanics by using a 50 inch telescope outside the earth's atmosphere and one hour exposure time is about 32nd apparent magnitude.

Descriptors :   (*LIGHT, AMPLIFIERS), (*MARS(PLANET), INLAND WATERWAYS), (*PHOTOGRAPHY, ASTRONOMY), PERFORMANCE(ENGINEERING), ASTRONOMICAL CAMERAS, PHOTOGRAPHIC EMULSIONS, PHOTOELECTRIC EFFECT, SUN, MOON, PHOTOGRAPHIC FILM, PHOTOGRAPHIC CONTRAST

Subject Categories : Astronomy
      Photography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE