The New Technology Telescope, or NTT is a 3.6m telescope located at La Silla Observatory, Chile.It saw first light in 1989 and is owned by ESO. It is fitted with active optics (not to be confused with adaptive optics) allowing it to obtain an excellent image quality while only having a thin, lightweight mirror, kept in shape with a number of actuators beneath. The NTT was later cloned, resulting in the TNG.
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