Flamsteed's equatorially mounted sextant fitted

Flamsteed's equatorially mounted sextant fitted with telescope. View from telescope side. On right of picture is the top of exterior of the Octagon Room at Flamsteed House, Greenwich, built on the orders of Charles II (1630-1685) which became the first Royal Observatory. Flamsteed became the first Astronomer Royal. From Historia Coelestis Britannica by John Flamsteed (London, 1725). Engraving

1725 Astronomer Astronomical Britannica Coelestis Fitted Flamsteed Greenwich Observatory Octagon Sextant Telescope

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