Johann Gabriel Doppelmayr was an astronomer of high repute and made a specialty of lunar observations. The main focus here is a chart comparing synodic periods as observed from Earth and other planets. Within this chart, there is a scene depicting heavenly creatures making observations through a telescope from their vantage in the clouds. Surrounding the chart are three Tychonic models of the solar system and a figure comparing the relative size of the Sun on different planets.

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Condition: B

On watermarked paper with faint toning and wear along the centerfold, minor scattered foxing, and a centerfold separation just entering the neatline at bottom. Several extraneous creases run the length of the map.