> Cornelio Bouis wrote: What kind of telescope drive is used to > track and photograph objects like the Shuttle, Mir and other LEO satellites? For sat trails, just open the lens and let the sat cross the sky. To actually have a scope follow a sat, you need a much more sophisticated system. Ron Dantowitz is the expert on those. -- Jay Respler -- JRespler@superlink.net Sky Views: http://mars.superlink.net/jrespler/skyviews.htm Satellite Tracker * Early Typewriter Collector Freehold, New Jersey