Comparison of shift-and-add and bispectrum image reconstruction methods for astronomy in the near infrared

V. A. Klückers; N. J. Wooder; J. C. Dainty; A. J. Longmore

doi:10.1364/JOSAA.13.001577

Comparison of shift-and-add and bispectrum image reconstruction methods for astronomy in the near infrared

V. A. Klückers, N. J. Wooder, J. C. Dainty, and A. J. Longmore

Journal of the Optical Society of America A
Vol. 13,
Issue 7,
pp. 1577-1583
(1996)
•https://doi.org/10.1364/JOSAA.13.001577

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V. A. Klückers, N. J. Wooder, J. C. Dainty, and A. J. Longmore, "Comparison of shift-and-add and bispectrum image reconstruction methods for astronomy in the near infrared," J. Opt. Soc. Am. A 13, 1577-1583 (1996)

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History
- Original Manuscript: June 26, 1995
- Revised Manuscript: October 3, 1995
- Manuscript Accepted: January 29, 1996
- Published: July 1, 1996

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Abstract

Using the results of photometry applied to speckle image reconstructions of the triple stellar system LHS1070 in the near infrared, we compare quantitatively the performance of shift-and-add and bispectrum image reconstruction methods and find that comparable results can be obtained. It is also found that, within this regime, compensation of the bispectrum transfer function is necessary to prevent telescope aberrations from appearing within bispectrum image reconstructions. The effective point-spread functions of these aberrations have been calculated with phase data obtained from the stellar calibration source.

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Reconstruction	Stellar System Components

	LHS1070 A	LHS1070 B	LHS1070 C
Data Set
Unsmoothed BS^a image 1	1	0.31 ± 0.01	0.24 ± 0.01
Unsmoothed BS image 2	1	0.31 ± 0.01	0.24 ± 0.01
Smoothed BS image 1	1	0.34 ± 0.01	0.26 ± 0.01
Smoothed BS image 2	1	0.33 ± 0.01	0.27 ± 0.01
SAA image 1	1	0.34 ± 0.01	0.26 ± 0.01
SAA image 2	1	0.32 ± 0.01	0.25 ± 0.01
By Leinert et al.11	1	0.33 ± 0.01	0.24 ± 0.01

Reconstruction	\|AB\| (arcsec)	\|AC\| (arcsec)	\|BC\| (arcsec)
Data set
Unsmoothed BS^a image 1	1.07 ± 0.02	1.42 ± 0.02	0.33 ± 0.02
Unsmoothed BS image 2	1.08 ± 0.02	1.43 ± 0.02	0.34 ± 0.02
Smoothed BS image 1	1.10 ± 0.02	1.42 ± 0.02	0.32 ± 0.02
Smoothed BS image 2	1.09 ± 0.02	1.42 ± 0.02	0.34 ± 0.02
SAA image 1	1.08 ± 0.02	1.41 ± 0.02	0.33 ± 0.02
SAA image 2	1.12 ± 0.02	1.42 ± 0.02	0.30 ± 0.02
By Leinert et al.11	1.10 ± 0.02	1.45 ± 0.03	0.35 ± 0.01

Reconstruction	AB∘	AC∘	BC∘
Data set
Unsmoothed BS^a image 1	354.8 ± 0.4	353.8 ± 0.4	350.8 ± 0.9
Unsmoothed BS image 2	354.8 ± 0.4	354.0 ± 0.4	351.3 ± 0.9
Smoothed BS image 1	354.6 ± 0.4	354.0 ± 0.4	351.7 ± 0.9
Smoothed BS image 2	354.7 ± 0.4	354.1 ± 0.4	352.4 ± 0.9
SAA image 1	355.0 ± 0.4	353.8 ± 0.4	349.9 ± 0.9
SAA image 2	354.7 ± 0.4	354.0 ± 0.4	351.6 ± 0.9
By Leinert et al.11	354.0 ± 0.4	352.6 ± 0.4	348.2 ± 0.4

Reconstruction	Stellar System Components

	LHS1070 A	LHS1070 B	LHS1070 C
Data Set
Unsmoothed BS^a image 1	1	0.31 ± 0.01	0.24 ± 0.01
Unsmoothed BS image 2	1	0.31 ± 0.01	0.24 ± 0.01
Smoothed BS image 1	1	0.34 ± 0.01	0.26 ± 0.01
Smoothed BS image 2	1	0.33 ± 0.01	0.27 ± 0.01
SAA image 1	1	0.34 ± 0.01	0.26 ± 0.01
SAA image 2	1	0.32 ± 0.01	0.25 ± 0.01
By Leinert et al.11	1	0.33 ± 0.01	0.24 ± 0.01

Reconstruction	\|AB\| (arcsec)	\|AC\| (arcsec)	\|BC\| (arcsec)
Data set
Unsmoothed BS^a image 1	1.07 ± 0.02	1.42 ± 0.02	0.33 ± 0.02
Unsmoothed BS image 2	1.08 ± 0.02	1.43 ± 0.02	0.34 ± 0.02
Smoothed BS image 1	1.10 ± 0.02	1.42 ± 0.02	0.32 ± 0.02
Smoothed BS image 2	1.09 ± 0.02	1.42 ± 0.02	0.34 ± 0.02
SAA image 1	1.08 ± 0.02	1.41 ± 0.02	0.33 ± 0.02
SAA image 2	1.12 ± 0.02	1.42 ± 0.02	0.30 ± 0.02
By Leinert et al.11	1.10 ± 0.02	1.45 ± 0.03	0.35 ± 0.01

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