help

Is the Conversion from Visibility to Dirty Image Reversible?

-- | February 19, 2017

Question: Hi, I was wondering the procedure of convert Visibility to Dirty image is reversible in reality? For example, I only have the Visibility (a) at first, then I convert it into Dirty image. After that, I convert the Dirty image to Visibility (b). Is a and b will be equal in reality? — Shui

Answer: In the sense that you can recover the same (u,v) distribution from an image which has been fourier transformed, I think that the answer to your question is yes.

Jeff Mangum

Facebook
Pinterest
Twitter
Linkedin

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.
	The U.S. National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."
	AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.