Abstract

High-resolution imaging with reference to a widely separated star is examined. Peak tracking of the specklegram in the reference channel results in a high-resolution image in the observational channel. A binary star with angular separation of 30.5 arcsec is examined in white light, and the resultant image of the primary star obtained with reference to the secondary star is shown to have better resolution than the centroid tracking image by a factor of 3.

© 1996 Optical Society of America

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References

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1995 (1)

A. Sivaramakrishnan, R. Weymann, J. Beletic, Astron. J. 110, 430 (1995).
[CrossRef]

1994 (4)

L. A. Thompson, Phys. Today 47, (12)24 (1994).
[CrossRef]

L. M. Close, D. W. McCarthy, Publ. Astron. Soc. Pacific 106, 77 (1994).
[CrossRef]

D. Sandler, S. Stahl, J. Angel, M. Lloyd-Hart, D. McCarthy, J. Opt. Soc. Am. A 11, 925 (1994).
[CrossRef]

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

1991 (1)

J. C. Christou, Publ. Astron. Soc. Pacific 103, 1040 (1991).
[CrossRef]

1986 (1)

1980 (1)

R. H. T. Bates, F. M. Cady, Opt. Commun. 32, 365 (1980).
[CrossRef]

Angel, J.

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

D. Sandler, S. Stahl, J. Angel, M. Lloyd-Hart, D. McCarthy, J. Opt. Soc. Am. A 11, 925 (1994).
[CrossRef]

Baba, N.

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

Bates, R. H. T.

R. H. T. Bates, F. M. Cady, Opt. Commun. 32, 365 (1980).
[CrossRef]

Beletic, J.

A. Sivaramakrishnan, R. Weymann, J. Beletic, Astron. J. 110, 430 (1995).
[CrossRef]

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

Cady, F. M.

R. H. T. Bates, F. M. Cady, Opt. Commun. 32, 365 (1980).
[CrossRef]

Cheselka, M.

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

Christou, J. C.

J. C. Christou, Publ. Astron. Soc. Pacific 103, 1040 (1991).
[CrossRef]

Close, L. M.

L. M. Close, D. W. McCarthy, Publ. Astron. Soc. Pacific 106, 77 (1994).
[CrossRef]

Dekany, R.

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

Hege, E.

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

Isobe, S.

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

Kuwamura, S.

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

Lloyd-Hart, M.

McCarthy, D.

McCarthy, D. W.

L. M. Close, D. W. McCarthy, Publ. Astron. Soc. Pacific 106, 77 (1994).
[CrossRef]

Miura, N.

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

Noguchi, M.

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

Norimoto, Y.

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

Ribak, E.

Sandler, D.

Sivaramakrishnan, A.

A. Sivaramakrishnan, R. Weymann, J. Beletic, Astron. J. 110, 430 (1995).
[CrossRef]

Stahl, S.

Thompson, L. A.

L. A. Thompson, Phys. Today 47, (12)24 (1994).
[CrossRef]

Weymann, R.

A. Sivaramakrishnan, R. Weymann, J. Beletic, Astron. J. 110, 430 (1995).
[CrossRef]

Astron. J. (1)

A. Sivaramakrishnan, R. Weymann, J. Beletic, Astron. J. 110, 430 (1995).
[CrossRef]

J. Opt. Soc. Am. A (2)

Opt. Commun. (1)

R. H. T. Bates, F. M. Cady, Opt. Commun. 32, 365 (1980).
[CrossRef]

Phys. Today (1)

L. A. Thompson, Phys. Today 47, (12)24 (1994).
[CrossRef]

Proc. SPIE (1)

R. Dekany, M. Cheselka, E. Hege, J. Angel, J. Beletic, Proc. SPIE 2200, 422 (1994).
[CrossRef]

Publ. Astron. Soc. Pacific (2)

J. C. Christou, Publ. Astron. Soc. Pacific 103, 1040 (1991).
[CrossRef]

L. M. Close, D. W. McCarthy, Publ. Astron. Soc. Pacific 106, 77 (1994).
[CrossRef]

Other (1)

S. Kuwamura, N. Baba, N. Miura, M. Noguchi, Y. Norimoto, S. Isobe, in Proceedings of the ESO Conference High-Resolution Imaging by Interferometry II, J. M. Beckers, F. Merkle, eds. (European Southern Observatory, Garching, Germany, 1992), p. 461.

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Figures (4)

Fig. 1
Fig. 1

Dual-channel speckle camera for detection of widely separated objects simultaneously.

Fig. 2
Fig. 2

Specklegrams of the primary (left) and the secondary (right) stars of ι Cnc in white light.

Fig. 3
Fig. 3

Plot of pseudo-long-exposure images of the primary (left) and the secondary (right) stars of ι Cnc. The size of one square in the plot is 0.12 arcsec × 0.12 arcsec.

Fig. 4
Fig. 4

Plot of reconstructed images of the primary (left) and the secondary (right) stars of ι Cnc. The primary star image is reconstructed with reference to the specklegrams of the secondary star. The size of one square in the plot is 0.12 arcsec × 0.12 arcsec.

Equations (3)

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L ( r ) = i = 1 N S i ( r + r i g ) ,
I ( r ) = i = 1 N S i ( r + r i p ) ,
B ( r ) = 1 N i = 1 N L ( r + r i p - r i g ) = 1 N j = 1 N i = 1 N S j ( r + r i p - r i g + r j g ) ,

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