Chester Astronomical Society is one of the world's oldest scientific societies going back at least to 1892. It hosts public lectures by amateurs and professionals alike and arranges visits to sites of technical interest.
After a last minute change of plan, last Wednesday saw society member Richard Sargent give an interesting talk on 3D astronomy. He had lots of 3D pictures which we had to view using 3D glasses. We must have looked a sight!
Some of the pictures I had difficulty focussing (possibly because I wear normal glasses as well), but some were superb. It felt at times that we were standing on the surface of the moon or Mars.