ShadowCam Instrument and Investigation Overview
M. S. Robinson, S. Brylow, M. A. Caplinger, Lynn M. Carter, M. Clark, B. W. Denevi, N. M. Estes, D. C. Humm, P. Mahanti, D.A. Peckham, M. A. Ravine, J. A. Schaffner, E. J. Speyerer, R. V. Wagner
Abstract
ShadowCam is a National Aeronautics and Space Administration Advanced Exploration Systems funded instrument hosted onboard the Korea Aerospace Research Institute (KARI) Korea Pathfinder Lunar Orbiter (KPLO) satellite. By collecting high-resolution images of permanently shadowed regions (PSRs), ShadowCam will provide critical information about the distribution and accessibility of water ice and other volatiles at spatial scales (1.7 m/pixel) required to mitigate risks and maximize the results of future exploration activities. The PSRs never see direct sunlight and are illuminated only by light reflected from nearby topographic highs. Since secondary illumination is very dim, ShadowCam was designed to be over 200 times more sensitive than previous imagers like the Lunar Reconnaissance Orbiter Camera Narrow Angle Camera (LROC NAC). ShadowCam images thus allow for unprecedented views into the shadows, but saturate while imaging sunlit terrain.