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SlideshowReport

The Very Large Array (VLA)

Description
The 27 radio telescopes of the VLA system are arranged along the arms of a Y in central New
Mexico. Besides being able to change the angles at which they observe the sky, these telescopes can be moved
by train cars so that the array can detect either wide areas of the sky (when the telescopes are close together, as in this photograph)
or small areas with higher resolution (when they are farther apart). The inset shows the traditional secondary mirror assembly
in the center of each of these antennas
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