telescopes – Page 5 – National Radio Astronomy Observatory

Software to Determine the Centroid of a Star in a CCD Frame

You might find some advice on publicly-available software that can calculate the centroid of a star in a CCD…

I believe that this question has been answered before. See “How Does a Radio Interferometer Work?” using the search…

What you are seeing in these “spikes” emanating from bright stars in these images is due to the optics…

To find objects in the night sky that are too dim to be seen with the unaided eye it…

As radioactive decay involves the emission of particles (He nuclei, electrons, or positrons) which do not produce signals detectable…

In most cases it requires high spatial resolution measurements of an object in order to accurately associate it with…

The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
	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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