Radio Astronomy – National Radio Astronomy Observatory

Does the Earth’s Atmosphere Affect Radio Astronomical Measurements?

To varying degrees radio astronomical measurements are affected by the Earth’s atmosphere, including changes in water vapor content. These…

I believe that this question has been answered several times in the past on this blog. I think that…

I believe that this question has been answered before in two posts which addressed questions about single radio telescopes…

You are correct in that brightness (you used the term “intensity”) is independent of distance, but flux density is…

The angles which separate the arms of the “Y” configuration of the VLA antennas are 120 degrees. Additionally, according…

Measurements that radio telescopes that operate at relatively long wavelengths, about one centimeter or longer, are not affected by…

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	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
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