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Active Control for Michelson Stellar Interferometers

Published online by Cambridge University Press:  02 August 2016

John W. Hardy  and
Edward P. Wallner
John W. Hardy
Affiliation:
Itex Corporation, Optical Systems Division, Lexington, Massachusetts, U.S.A.
Edward P. Wallner
Affiliation:
Itex Corporation, Optical Systems Division, Lexington, Massachusetts, U.S.A.

Abstract

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The effects of atmospheric turbulence on the image structure in a ground based Michelson Stellar Interferometer are analyzed. A complete system requires compensation both for the wavefront distortions over the collecting apertures and for path length differences between them. Wavefront sensing and compensation have been previously described and analyzed. In this paper, a method of path length compensation and estimation of the mutual coherence function of the source is developed using matched filters in multiple spectral bands. A practical implementation of the resulting system is described and estimates of its performance given.

Type
The Scientific Programme
Information
International Astronomical Union Colloquium , Volume 50: High Angular Resolution Stellar Interferometry , January 1979 , pp. 10-1 - 10-26
Copyright
Copyright © 1979

References

1) Beavers, W.I. and Swift, W.D., Photoelectric Fringe Strength Measurement, Applied Optics, 7, 1975–1979 (1968).Google Scholar
2) Elliott, J.L. and Glass, I.S., A Quantitative Fringe Detector for Stellar Interferometry, The Astronomical Journal, 75, 1123–1132, (1970).Google Scholar
3) Currie, D.G., Knapp, S.L. and Liewer, K.M., Four Stellar-Diameter Measurements by a New Technique: Amplitude Interferometry. The Astrophysical Journal, 187, 131–134, 1974.Google Scholar
4) Hanbury Brown, R., Intensity Interferometry versus Michelson Interferometry, Proceedings of ESO Conference on Optical Telescopes of the Future, Cern, Geneva, 391–407, Feb. 1978.Google Scholar
5) Labeyrie, A., Interference fringes obtained on Vega with two optical telescopes, The Astrophysical Journal, 196, L71–L75, 1975.Google Scholar
6) Hardy, J.W., Lefebvre, J.E. and Koliopoulos, C.L., Real time atmospheric compensation, J.Opt.Soc.Am., 67, 360–369, 1977.Google Scholar
7) Dyson, F.J., Photon noise and atmospheric noise in active optical systems, J.Opt.Soc.Am., 65, 551–558, 1975.CrossRefGoogle Scholar
8) Lawrence, R.S. and Strohbehn, J.W., A Survey of Clear-Air Propagation Effects Relevant to Optical Communications, Proc IEEE, 58, 1523–1545, 1970.Google Scholar
9) Greenwood, D.P. and Fried, D.L., Power spectra requirements for wave-front compensative systems, J.Opt.Soc.Am., 66, 193–206, 1976.Google Scholar
10) Hudgin, R.H., Wavefront compensation error due to finite corrector-element size, J.Opt.Soc.Am., 67, 393–395, 1977.Google Scholar