The Gran Telescopio Canarias, also known as GranTeCan or GTC, is a 10.4 m (410 in) reflecting telescope undertaking commissioning observations at the Roque de los Muchachos Observatory on the island of
The New Largest Telescope in the World - Sky & Telescope - Sky & Telescope
Gran Telescopio CANARIAS (GTC)
BPM Case Study (Great Canary Telescope - GRANTECAN) - YouTube