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ClearAndDark produces astronomy software for the Mac-based astronomer.



In addition to purely astronomical software, our application SatTracker is designed to plot the locations of Earth-orbiting artificial satellites. It is unique in the Mac OS X environment, providing orbit tracking of multiple satellites with multiple ground stations, the location of the South Atlantic Anomaly, up-to-date global cloud images and a host of other features.



A small number of DIY projects are also described on this site – most of these work hand-in-hand with our software applications.

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