On Thu, 29 Jul 1999 09:15:48 -0500 Martin McCormick writes: > One interesting problem I fully anticipate but haven't solved >is how best to handle the vertical component in tracking the beam. >In short, it doesn't matter as long as the beam is receivable. A cylindrical lens will concentrate the beam in one plane but allow it to spread out in the other. It sounds like this is what you want. These lenses are shaped like a half-cylinder. They are stock items from Edmund Scientific and similar places. ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj.