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RANGER PREFLIGHT SCIENCE ANALYSIS AND THE LUNAR PHOTOMETRIC MODEL

A photometric model of the lunar mare surface is presented. The lighting parameters for the Ranger 3,4, and 5 TV system are developed using the photometric model, and related to the system parameters. The interactions of the TV constraints with those imposed by the other experiments and by trajectory characteristics are discussed in detail, and the use of plastic spheres to show graphically the interrelationships among the parameters is described.

PHOTOMETRY