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Notes and Reflections on Books and Media

by Hannah Leitheiser

Optical Interferometry

An Introduction to Astronomical Photometry Using CCDs

W. Romanishin

2006

Link

2018-11-03

"Optical interferometry is harder than radio interferometry, due to the much shorter wavelengths and higher frequency of optical EMR as compared to radio waves. Optical interferometry is currently a very rapidly developing field in astronomy" - W. Romanishin, An Introduction to Astronomical Photometry Using CCDs (2006)

For awhile now, multiple radio telescopes at different locations have been combined to increase angular resolution. I had said that optical interfermetry was impossible because of the high frequency of light, but was wrong -- it's only harder. To most telescopes, stars are point-sources, but optical interfermetry has been used to image the surface of stars.

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