Masking interferometry at 150: old enough to mellow on redundancy?

Peter Tuthill

doi:10.1117/12.2313145

9 July 2018 Masking interferometry at 150: old enough to mellow on redundancy?

Peter Tuthill

Proceedings Volume 10701, Optical and Infrared Interferometry and Imaging VI; 107010S (2018) https://doi.org/10.1117/12.2313145
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The year 2017 marks the 150th anniversary of Fizeau's celebrated paper which first suggested the idea of harnessing the then-infant technology of interferometry in the service of astrophysical measurement. This took the form of a mask, to be placed over the entrance pupil of a telescope to create what we would now term a Fizeau Interferometer. The experiment was successfully performed at Marseilles a few years later. Despite its antiquity, this deceptively simple idea is still with us and thriving beyond reasonable expectations today: an aperture mask that would be recognisable to Fizeau will fly aboard the James Webb Space Telescope. This paper highlights remarkable results at the very finest angular scales still being delivered by this technique, and prospects for future innovations on Fizeau's idea that may well extend the winning streak well into the future. In particular, the idea of strict non-redundancy usually enforced in the layout of masking arrays is subject to scrutiny.

Conference Presentation

Citation Download Citation

Peter Tuthill "Masking interferometry at 150: old enough to mellow on redundancy?", Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107010S (9 July 2018); https://doi.org/10.1117/12.2313145

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