A far-ultraviolet photometer for planetary surface analysis

Details A far-ultraviolet photometer for planetary surface analysis A far-ultraviolet photometer for planetary surface analysis

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976moon...15...51h&link_type=abstract

The Moon, vol. 15, Jan.-Feb. 1976, p. 51-65.

Computer Science

9

Far Ultraviolet Radiation, Lunar Albedo, Planetary Surfaces, Ultraviolet Photometry, Apollo 17 Flight, High Resolution, Refractivity, Satellite-Borne Instruments

Scientific paper

The measurement of local variations in the far-ultraviolet albedo is explored as a means of detecting changes in the refractive index of rocks and dust on the surface of atmosphereless planets and satellites. Far-ultraviolet spectrophotometric measurements of the lunar surface, which were obtained on the Apollo 17 orbital mission, are presented to demonstrate that significant albedo variations occur in the spectral range 120 to 170 nm. These data also confirm the hypothesis that the albedo variations represent refractive-index differences in the surface materials. A three-band photometer is described which, when put in orbit around a solar system object, is capable of providing refractive-index maps with a sensitivity of one part in the second decimal place and with kilometer resolution. Comparative surface-composition and surface-history analyses based on such maps are discussed.

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