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Kodaikanal Solar Observatory
The Kodaikanal Solar Observatory is a historic solar observatory located on the Palani Hills near Kodaikanal in Tamil Nadu. Established on 1 April 1899 and operated by the Indian Institute of Astrophysics, Bengaluru, it is situated at an altitude of about 2,343 metres. It is notable for its long-term solar observations, astronomy museum, and the discovery of the Evershed effect in 1909.