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It will be located at the [[Paranal Observatory]] on [[Cerro Paranal]], a 2,635-m high mountain in the [[Atacama Desert]] in northern [[Chile]].
The VLT consists of a cluster of large telescopes, some of which are already in operation, with a central [[interferometer]] which will be used to resolve fine features.
The VLT can be operated in three modes:
* as a set of independent telescopes
* as a single large incoherent instrument, for extra light-gathering capacity
* as a single large coherent interferometric instrument, for extra resolution
In its full interferometric operating mode, the VLT is intended to achieve an effective angular resolution of 0.001 [[arcsecond]] at a wavelength of 1 µm. This is an angle of 0.000000005 radians, equivalent to resolving a target 2 meters across at the distance between the Earth and Moon.
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This should easily resolve the 5-metre wide Lunar Module bases left on the Moon by the Apollo moon missions, and a group of European scientists intends to do just that.
See also:
* [[Overwhelmingly Large Telescope]]
== External links ==
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