Large Millimeter Telescope
The Large Millimeter Telescope (LMT) (Spanish: Gran Telescopio Milimétrico, or GTM) -officially Large Millimeter Telescope Alfonso Serrano (Spanish: Gran Telescopio Milimétrico Alfonso Serrano)- is the world's largest single-aperture telescope in its frequency range, built for observing radio waves in the wave lengths from approximately 0.85 to 4 mm. It has an active surface with a diameter of and of collecting area. It is located at an altitude of 4850 metres on top of the Sierra Negra, the f…