Book page illustrating an uncolored celestial map, showing both the figural representations of the constellations and the stars of which they are composed. The progress of a comet through this area of the sky is demarcated. Entitled "Figura observat. Cometae prioris Hauniae fact. ad Communicat. Cl. viri D. Erasmi Bartholini M. D. & Regii Math. Prof. pertinens"; plate no. 31. Includes the whale, Cetus, at left.
From "Theatrum Cometicum", a 1668 text about comet sightings throughout history and their meanings.
