Johannes Hevelius Biography

Establishes an observatory on the roofs of his Gdansk houses.

Builds a major European centre for naked-eye astronomical observation.

Introduces influential names and drawings for visible features of the Moon.

Publishes a detailed study and atlas of the lunar surface.

Creates an extensive seventeenth-century reference work on cometary astronomy.

Publishes observations and historical accounts of numerous comets.

Documents large precision instruments used before telescopic sights became standard.

Publishes a description of his observatory, instruments and observing methods.

Provides one of the most elaborate celestial atlases of its period.

His star atlas is published posthumously with newly defined constellations.