Selenographia

Copernican (heliocentric) system of the universe

Hevelius observing through refracting telescope

Hevelius's 150-ft (16.240m) telescope being erected

Hevelius's plan for a tower observatory, showing

Hevelius observing with a wooden-tubed refracting

Method of projecting the sun's image through a

Projecting the sun's image through a refracting

Observations of sunspots, May 1644. On right is

Hevelius

Hevelius, Johannes, 28.1.1611 - 28.1.1687, German

Hevelius, Johannes (1611-1687). German astronomer

Johannes Hevelius depicted in his nightclothes looking at th