Computer Science
Scientific paper
Jan 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...49..109g&link_type=abstract
Icarus, vol. 49, Jan. 1982, p. 109-119.
Computer Science
20
Bruderheim Meteorite, Carbonaceous Chondrites, Spectral Reflectance, Spectrophotometry, Basalt, Bidirectional Reflectance, Particle Size Distribution, Spectrum Analysis, Meteorites, Allende Meteorite, Spectra, Reflectance, Ordinary Chondrites, Carbonaceous Chondrites, Bruderheim Meteorite, Geometry, Wavelengths, Procedure, Basalts, Techniques, Experiments, Samples, Meteorite, Photometry, Comparisons
Scientific paper
Spectral reflectance curves of flat laboratory samples of the carbonaceous chondrite Allende, a basalt, and the ordinary chondrite Bruderheim measured in a bidirectional geometry are shown to differ from those measured using an integrating sphere. In general, reflectance curves obtained by the bidirectional method are redder than those obtained with an integrating sphere. The degree of difference increases with increasing absolute reflectance. When spectral reflectance curves obtained by the two methods are compared to the reflectance curves expected for spherical and aspherical planets covered with the same materials, it is found that in general the integrating sphere measurements provide a better match to a planet at small phase angles. As the phase angle increases, bidirectional reflectance curves provide a closer match.
Gradie Jonathan
Veverka Joe
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