Eigentliche verzeichnus dieses im Jahr 1618...
Caspar Hersbach
Celestial chart
Cologne, Germany, 1618
Engraving
WOP-43

Although very little is known about Caspar Hersbach, we do know that this broadside celestial chart was made to announce the appearance of a comet in 1618. The comet is illustrated at the bottom of the sheet above a brief description of the event, while the chart itself tracks the path of the comet across the sky, in this instance, through the constellation Boötes.