Clementine Images of the Lunar Sample-Return Stations: Improvements to the TiO2 Mapping Technique

The present method for determining the TiO2 content of the lunar surface via extended-visible reflectance spectrometry attempts to develop a calibration for the full resolution UVVIS images of Clementine, on the basis of images of the lunar sample-return sites. The images were converted to 'absolute' reflectance by dividing by the spectrum of the Apollo 16 telescopic site extracted from the Clementine images, then multiplying by the laboratory spectrum of Apollo 16 soil 62231.