Lunar crater depths from Orbiter IV long-focus photographs

Details Lunar crater depths from Orbiter IV long-focus photographs Lunar crater depths from Orbiter IV long-focus photographs

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974icar...23..116a&link_type=abstract

Icarus, vol. 23, Sept. 1974, p. 116-133.

Other

9

Depth Measurement, Lunar Craters, Lunar Photographs, Photographic Measurement, Satellite-Borne Photography, Astronomical Catalogs, Lunar Orbiter, Lunar Topography, Selenography, Shadows, Tables (Data)

Scientific paper

Determination of the depths of more than 1900 small lunar craters from measures of shadows on the long-focus pictures obtained by Lunar Orbiter IV. The method for converting the measured shadow length into the true length in nature of the shadow hypotenuse is new and is applicable to other planetary bodies, provided that comparable spacecraft ephemerides are available. The measures were made with a simple surveyor's plotting scale on the standard Orbiter IV photographic enlargements. The results indicate that the smaller lunar (D less than 30 km) crater are appreciably deeper than is indicated by earlier work using imagery obtained at terrestrial observatories.

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