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Minimum Redundant Aperture Masking Interferometry With Tip-Tilt Wavefront Correction

Published online by Cambridge University Press:  19 July 2016

Jun Nishikawa ,
Yutaka Hayano ,
Naruhisa Takato ,
Motokazu Noguchi ,
Masanori Iye ,
Koh-Ichiro Morita  and
Masato Ishiguro
Jun Nishikawa
Affiliation:
Hiraiso Solar Terrestrial Research Center, Communications Research Laboratory, 3601 Isozaki, Nakaminato, Ibaraki 311-12 Japan
Yutaka Hayano
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181 Japan
Naruhisa Takato
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181 Japan
Motokazu Noguchi
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181 Japan
Masanori Iye
Affiliation:
National Astronomical Observatory, Mitaka, Tokyo 181 Japan
Koh-Ichiro Morita
Affiliation:
Nobeyama Radio Observatory, Minamimaki-mura, Minamisaku-gun, Nagano 384-13 Japan
Masato Ishiguro
Affiliation:
Nobeyama Radio Observatory, Minamimaki-mura, Minamisaku-gun, Nagano 384-13 Japan

Abstract

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We made aperture masking optical interferometry experiments using up to 30 apertures and with a tip-tilt correction of wavefront error. We examined the performance of minimum redundant configurations of 11–30 sub-apertures on the pupil plane mask. These configurations have two advantages; the redundancy noise is as small as realized in non-redundant masking method, and the uv-coverage is as high as in speckle interferometry enabling to get reconstructed images without mask exchange. We also examined the effect of tip-tilt wavefront correction within a telescope pupil in front of the aperture masking optics. The light coherency between sub-apertures was shown to increase by the correction.

Keywords

Aperture SynthesisInterferometrySpeckleWavefront
Type
Adaptive Optics and Seeing
Information
Symposium - International Astronomical Union , Volume 158: Very High Angular Resolution Imaging , 1994 , pp. 296 - 298
Copyright
Copyright © Kluwer 1994 

References

Haniff, C.A., Mackay, C.D., Titterington, D.J., Sivia, D., Baldwin, J.E., and Warner, P.J.: 1987, Nature 328, 694.Google Scholar
Lohmann, A. W., Weigelt, G., and Wirnitzer, B.: 1983, Appl. Opt. 22, 4028.Google Scholar