Effect of nonisoplanaticity on the shift- and -add algorithm

Analysis of the shift-and-add (SAA) algorithm in double-star speckle interferometry has been extended to include the case of partial nonisoplanaticity. It was found that the intensity ratio of the ghost to the principal spots produced by SAA is essentially constant, regardless of the degree of nonis...

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Bibliographic Details
Published in:Optics letters 1984-03, Vol.9 (3), p.65-67
Main Author: BAGNUOLO, W. G. JR
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations
Observation and data reduction techniques. Computer modeling and simulation
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Summary:Analysis of the shift-and-add (SAA) algorithm in double-star speckle interferometry has been extended to include the case of partial nonisoplanaticity. It was found that the intensity ratio of the ghost to the principal spots produced by SAA is essentially constant, regardless of the degree of nonisoplanaticity, but that the ratio of either outer spot to the center spot declines in a manner similar to that of the autocorrelation.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.9.000065