Plate, Saturn and Jupiter by Joseph Campani Title page of 'Eminentissimo Principi Flavio Chisio S. R. E. Cardinali. Quod in Saturno et Ioue Vitreis Lentibus Torno a se nuper inuento formatis deprehendit. Et Romae primus oculis spectandum exhibuit Joseph Campanus. Obsequii et observantiae argumentum DD' [For the eminent Prince, the cardinal of St. Chisii. That there has been found of late, through glass lens, found out that the formation of Saturn and of Jupiter. The eyes were the first to see Jupiter. Compliance and respectable argument.] The engraving shows observations by Giuseppe Campani, astronomer and instrument-maker, of the rings of Saturn and the satellites of Jupiter. Subject: Planets / Astronomy 1664