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Proceedings Paper

Point-diffraction interferometer for radio telescopes
Author(s): Taishi Okumura; Hiroaki Imada; Makoto Nagai; Tom Nitta; Naomasa Nakai; Nario Kuno
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Paper Abstract

We propose a novel wavefront sensor for radio telescopes with a point diffraction interferometer. A point-like object is set at a pupil plane and the electric field at the focal plane is measured. A receiver dedicated to the novel sensor is prepared which has delay lines to make interferograms. A procedure to estimate the electric field at the pupil is shown analytically. Numerical simulation reveals that the proposed system allows us to measure the phase of the electric field at the pupil with a precision of about λ/28.

Paper Details

Date Published: 8 August 2016
PDF: 8 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990641 (8 August 2016); doi: 10.1117/12.2233942
Show Author Affiliations
Taishi Okumura, Univ. of Tsukuba (Japan)
Hiroaki Imada, Institute of Space and Astronautical Science, JAXA (Japan)
Makoto Nagai, Univ. of Tsukuba (Japan)
Tom Nitta, Univ. of Tsukuba (Japan)
Naomasa Nakai, Univ. of Tsukuba (Japan)
Nario Kuno, Univ. of Tsukuba (Japan)


Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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