EARTH-TO-SPACE CONTRAST TRANSMITTANCE MEASUREMENTS FROM GROUND STATIONS.

The ability of astronauts or satellite-borne cameras to see land masses, coast lines, or lesser objects on the surface of the earth depends upon the apparent contrast (C sub r) of the object as viewed from orbital altitude. This report describes a method believed to be capable of providing input data for the apparent contrast equation on the basis of optical measurements made from ground stations.
Included in the report is Image Transmission by the Troposphere I, pub. in the Jnl. of the Optical Society of America 47:499-506, Jun 57.