John Dobson on April 1, 2006 attended Astronomy Day at the Carnegie Science Center, in Pittsburgh PA. He gave a talk in the Planetarium followed by questions and answers to a good number of interested people.

A telescope mirror grinding demonistration was next using a 12.5 inch mirror blank.

Mr.Dobson's final stop was to tour Mingo Creek Park Observatory in Washington County PA.

Here are some images of the events: