Flamsteed House: Inside the Observatory's Original 1676 Building

Flamsteed House was never just an instrument room. The ground floor was John Flamsteed’s actual home, where he lived with his wife Margaret Cooke, whom he married in 1692 and who later helped with his calculations and oversaw publishing his life’s work after his death. He paid a real personal cost for the job: the Crown covered the building, but Flamsteed funded much of his own equipment and assistants’ wages out of pocket, on a modest official salary.

He never left. Flamsteed moved in during the summer of 1676 and stayed until his death in 1719, forty-three years cataloguing the sky from the same rooms - which is why, more than three centuries later, everyone still calls it Flamsteed House.

Flamsteed spent decades cataloguing the stars from this house, but refused to publish until he trusted the accuracy, terrified of putting his name to a mistake. Isaac Newton and Edmond Halley needed those observations for their own work and ran out of patience: Newton used his position as Royal Society president to create a “Board of Visitors” with the power to demand Flamsteed’s data.

In 1712, Halley published 400 copies of Flamsteed’s unfinished catalogue without his permission. Flamsteed was furious, calling it an insult to his work, and spent years tracking copies down. In 1716 he got hold of 300 of them - and burned them on a bonfire in Greenwich Park, a short walk from where he was standing.