Giuseppe Cassella
Giuseppe, Antonio Pietro Cassella (14 October 1755, in Cusano Mutri – 8 February 1808, in Naples) was an Italian astronomer, professor of Astronomy at the Naples University and first director of the Astronomical Observatory of Naples. He studied mathematics at the University of Naples with Giuseppe Marzucca, and followed Felice Sabatelli's astronomy lessons, becoming his student. He then went to specialize in astronomy at the Padua observatory directed by Abbot Giuseppe Toaldo. In 1786 he returned to Naples where he taught nautical astronomy at the Marine Academy and mechanics at the Royal College of Artillery. He was also  assistant to the chair of astronomy and nautical science held by Ferdinando Messia de Prado. In 1788 he published the first astronomical ephemeris calculated for the meridian of Naples. In 1791 he was appointed royal astronomer by Ferdinand IV and asked the king to set up an observatory. In the same year he was granted permission to design it in the east corner of the University Building, now the national archaeological museum. The project was carried out by the Roman architect Pompeo Schiantarelli, but the works were soon abandoned, creating only the sundial in the floor of the "great hall