Some new photometric data form panoramic pictures taken by Lunokhod-2

Details Some new photometric data form panoramic pictures taken by Lunokhod-2 Some new photometric data form panoramic pictures taken by Lunokhod-2

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpspr...4...32b&link_type=abstract

In its USSR Rept.: Space (JPRS-USP-85-003) p 32 (SEE N85-25284 15-12) Transl. into ENGLISH from Kosmicheskiye Issled. (USSR),

Computer Science

Lunar Surface, Lunokhod Lunar Roving Vehicles, Photography, Photometry, Albedo, Brightness, Light Transmission, Reflectance, Surface Properties

Scientific paper

Pictures taken during the third and fourth lunar operating days of the Lunokhod-2 unmanned lunar exploration vehicle were processed photometrically in order to detail the photometric properties of the Moon surface material in its natural state. Photometric markers in the field of view of the remote panoramic photometers were used to find the comparative brightness of the lunar landscape features for the purpose of determining their albedo and the nature of light reflection under changing illumination and observation conditions. The markers were flat metal plates with 39 rectangular brightness fields on the front group in 3 columns, each field column having a set of different gradations of brightness from black to white. Two panoramic pictures were broken down into several sections in order to distinguish the photometric data from the undisturbed surface and that disturbed by the passage of the lunar vehicle. The theoretical and empirical distributions of the photometric function for four of these subsections are plotted graphically, showing that the form of the empirical function is governed primarily by the true photometric relief.

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