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Selected Huygens "triplets" Huygens' Descent Imager Spectral Radiometer had three separate cameras: a side-looking imager, a medium-resolution imager, and a high-resolution imager, whose fields of view overlapped, producing strips of images with varying resolution from the horizon to directly beneath the spacecraft. The data were returned as "triplets" -- each vertical triplet contains frames captured simultaneously by the three cameras. These triplets are out of chronological order. ESA / NASA / JPL / University of Arizona