G'day All,
We are doing a bit of a clean up around the planetarium and we have decided to toss out some old slide projectors. They have a small lens set in them, 2 x plano-convex and 1x diffuser. The lenses are 2" in diameter.
Does anyone know of a use for these lenses? Using them to make a small scope or something like that?
Thanks for any ideas,
Peter.