SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Imperial Astronomical Observatory. Historical artwork of the Imperial Astronomical Observatory at Beijing (Peking), China, in the late 17th century. Astronomical equipment including large bronze spheres (lower frame), a quadrant (at upper left) and a sextant (at upper centre) are visible. The observatory, which is found on top of the City Wall, is now a museum. It was from here that sunspots were discovered and records of comets were kept from 2296 BC. Observations of solar and lunar eclipses were also made.
Model release not required. Property release not required.