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Astrometric Reduction of Saturnian Satellites with Cassini-ISS Images Degraded by Trailed Stars

Li, Yan; Zhang, Qing-Feng; Liu, Meng-Qi +4 more

The Imaging Science Subsystem (ISS) mounted on the Cassini spacecraft has taken a lot of images, which provides an important source of high-precision astrometry of some planets and satellites. However, some of these images are degraded by trailed stars. Previously, these degraded images cannot be used for astrometry. In this paper, a new method is…