Tool to simulate astronomical events in the past, present (in real time orįast pacing) or in the future, specially educators and science historians among others. Since its first release in 2004, it is very appreciatedīy amateur astronomers but also by professionals who find in it a powerful Some money to support their efforts) that uses an intuitive and user-friendly Propagation programs - Ham, DSP and satellite tracking softwareĪ free software or more exactly a shareware (because you can donate them Pro - Sk圜harts / Cartes du ciel - Hallo Northern Sky - ExInEd
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