Before you can use SatSpy, you need a fresh batch of element sets. What is an element set? It is a set of numbers that is used by an orbit propagator to compute the position of a satellite at any time If you are reading this with a browser connected to the Net, you already have all you need to get fresh elsets. There are several locations on the Net, commercial online services and BBS's where you can get them. These include:
SatSpy's online documentation shows you everything you need to know about finding
elsets. You can go directly to many of our favorite space-related Web sites the SatSpy homepage.