  The dome of Saint Peter's Basilica plays the role of the Moon during a
stellar occultation and Arcturus is the target star. This occultation-like
phenomenon is useful for introducing to occultation astronomy a class of
student up to university level. It can be organized very easily at the
convenience of the audience. Techical and didactical aspects are discussed; the
video is available at http://www.youtube.com/watch?v=hIfsj7t-u-c and has been
realized with an ordinary camcorder.
