Method of observing the Sun at the Royal Observatory, Greenwich Size:Large: 7 x 5in View of the Sessions House

View of the Sessions House

HAPPALES JACCHUS

Britannia shows off a new weapon to the Lord of the Admiralty

Charles Maurice Talleyrand-Perigord (1754-1838)

Method of observing the Sun at the Royal Observatory, Greenwich Size:Large: 7 x 5in View of the Sessions HouseInterior view of a darkened chamber at the old Royal Observatory building, with a refracting telescope projecting an image of the Sun. The observatory was completed in 1676: in that year there were both solar eclipses and a transit of Mercury. Plate 3 (left half detail) from Ichnographia speculae Regiae Grenovici exquisite facta (London, 1676) a series of engravings commissioned by Sir Jonas Moore, the leading force in the construction and equipping