Book page illustrating an uncolored celestial map, showing both the figural representations of the constellations and the stars of which they are composed. The constellations visible are Piscis, Triangulum, Pegasus (in part), and Andromeda. The progress of a comet through this area of the sky is demarcated. With a relative scale printed at the lower edge of the engraving. Entitled "Figura posterior observat. Cometicar. Franequerae factar. ad Communicat. Cl. viri D. Abrah. de Grau etc. pertinens"; plate no.39.
From "Theatrum Cometicum", a 1668 text about comet sightings throughout history and their meanings.
