During my time at NRAO, they operated the four telescopes shown here for the National Science Foundation. As of October 2018, a reorganization placed the GBT and VLBA under a different name. I do not know what the long-term plans are for the organization.
For basic information on Radio Astronomy please see Wikipedia. For an in depth introduction please see Essential Radio Astronomy.
The Very Long Baseline Array, or VLBA, is a network of 10 25 meter antennae spread across the United States and functioning as a single telescope.
The Very Large Array, or VLA, is a network of 28 25 meter antennae located in central New Mexico.
The Atacama Large Millimeter Array, or ALMA, is an array of 66 12m & 8m antennae located high in the mountains of Chile.
The Greenbank Telescope, or GBT, is a single 100m x 110m telescope located in the National Radio Quite Zone, West Virginia.
© David C. Hunter, 2014
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