The Telescopio Nazionale Galileo, or TNG, is a 3.58m Italian telescope located on the island of San Miguel de La Palma (or, more simply, La Palma), in the Canary Islands archipelago. It is one of the largest telescopes hosted by the Roque de los Muchachos Observatory, a very important observing site in the northern hemisphere. It is now operated by the "Fundación Galileo Galilei, Fundación Canaria", a no-profit institution which manages the telescope on behalf of INAF, the Italian National Institute of Astrophysics. The telescope saw its first light in 1998.