Method of observing the Sun at the Royal Observatory, Greenwich Size:Large: 7 x 5in the First Lord of the

the First Lord of the Admiralty

Royal College of Surgeons

View showing the bay of an aisle next to the crossing

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Method of observing the Sun at the Royal Observatory, Greenwich Size:Large: 7 x 5in the First Lord of theInterior 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