Sidmouth has an observatory founded by Sir Norman Lockyer (1836-1920) [Stanier]. [DNB] locates it at Salcombe Regis (about 2 miles ENE of Sidmouth) and says that it was built in 1913 and that Lockyer died here. It is still in use as a science centre. Lewis Evans, the founding benefactor of the Museum of the History of Science, Oxford, lived at Sidmouth and his collection of scientific instruments was there before he donated it to Oxford in 1922 [Gunther & Simcock].
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An extract from
The Mathematical Gazetteer of the British Isles
created by David Singmaster
The original site is at