> reporting strange (impossible) non-linear movements of the satellite. E.g. > jumping back and forth and zizagging along the track. > I see such "movements" quite often when viewing satellites. I'm pretty sure that the apparent zig-zagging is caused by atmospheric interference (temperature / density fluctuations), similar to the phenomenon which causes stars to "twinkle." - Bill Purcell. ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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