hello all, We want (well better saying my son wants) to build a propellor clock and make a projection of the actual star map, or in other words, "build a desktop planetarium". Although I like the idea, I've the feeling that are quiet a lot large problems to overcome. The first problem I see (or better said I don't expect to see anything ;-) is how to get such a small spot like "a star at the sky" projected ? If searched google and ixquick, but couldn't find any usefull links. So if anyone has some good ideas or links, I would be much obliged. thanks, Stef Mientki -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist