At Kavalur the first observations with an indigenously built 38 cm telescope were made in late 1967. In Kavalur, the one-metre Zeiss telescope was installed in 1972, and the very next month, during an occultation event, scientists discovered a trace of atmosphere on Ganymede, the largest satellite of Jupiter. Five years later the same telescope discovered the rings of Uranus. -- Indian Astronomy : From Jantar-Mantar to Kavalur, Department of Science and Technology, Government of India.