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High-resolution Imaging by Optical Aperture Synthesis: First Results from the MAPPIT Project

Published online by Cambridge University Press:  25 April 2016

J. G. Robertson ,
T. R. Bedding ,
R. G. Marson ,
P. R. Gillingham ,
R. H. Frater ,
J. D. O’Sullivan  and
R. P. Norris
J. G. Robertson
Affiliation:
School of Physics, University of Sydney, NSW 2006
T. R. Bedding
Affiliation:
School of Physics, University of Sydney, NSW 2006
R. G. Marson
Affiliation:
University of Sydney and CSIRO Division of Radiophysics, PO Box 76 Epping, NSW 2121
P. R. Gillingham
Affiliation:
Anglo-Australian Telescope, Coonabarabran NSW 2357
R. H. Frater
Affiliation:
CSIRO Institute of Information Science and Engineering, North Ryde, NSW
J. D. O’Sullivan
Affiliation:
CSIRO Division of Radiophysics
R. P. Norris
Affiliation:
Australia Telescope National Facility, PO Box 76 Epping, NSW 2121
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Abstract

We have successfully demonstrated optical aperture synthesis at the 4-m Anglo-Australian Telescope. By using a multi-hole mask over the (re-imaged) primary mirror and recording the resulting fringe patterns with high time resolution, diffraction-limited images of sufficiently bright objects can be reconstructed. The data processing uses closure phases to overcome the effects of atmospheric turbulence. We show an image of the double star η Oph, with component separation 0″.45.

Type
Instruments & Facilities
Information
Publications of the Astronomical Society of Australia , Volume 9 , Issue 1 , 1991 , pp. 162 - 163
Copyright
Copyright © Astronomical Society of Australia 1991

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References

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