Flamsteed's Well Telescope

Flamsteed's Well Telescope (HM27QQ)

Location: London, England SE10 8XJ Greater London
Country: United Kingdom
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N 51° 28.663', W 0° 0.081'

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John Flamsteed, the first Astronomer Royal at Greenwich, used a 100-foot (30.5m) well on this site to accommodate a very long telescope. The astronomer sat at the bottom of the well and observed stars that passed directly overhead. It was hoped that placing the telescope in the well would make it possible to create a steady long focus instrument for very fine measurements. Flamsteed made a few observations from here in 1679, but the damp underground conditions soon made the telescope impossible to use. This reconstructed circle of bricks indicates the approximate site of the well telescope.
HM NumberHM27QQ
Marker ConditionNo reports yet
Date Added Thursday, May 24th, 2018 at 1:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)30U E 708224 N 5707215
Decimal Degrees51.47771667, -0.00135000
Degrees and Decimal MinutesN 51° 28.663', W 0° 0.081'
Degrees, Minutes and Seconds51° 28' 39.78" N, 0° 0' 4.86" W
Driving DirectionsGoogle Maps
Which side of the road?Marker is on the right when traveling South
Closest Postal AddressAt or near Blackheath Ave, London England SE10 8XJ, GB
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