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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1611
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dc.contributor.authorKarbelkar, S.N.-
dc.date.accessioned2006-12-21T10:58:26Z-
dc.date.available2006-12-21T10:58:26Z-
dc.date.issued1990-11-
dc.identifier.citationAstronomy and Astrophysics, 1990, Vol.238, p485-493en
dc.identifier.issn0004-6361-
dc.identifier.urihttp://hdl.handle.net/2289/1611-
dc.description.abstractIn order to describe the atmospheric turbulence which limits the resolution of long-exposure images obtained using ground-based large telescopes, a simplified model of a speckle pattern, reducing the complexity of calculating field-correlations of very high order, is presented. Focal plane correlations are used instead of correlations in the spatial frequency domain. General tripple correlations for a point source and for a binary are calculated and it is shown that they are not a strong function of the binary separation. For binary separations close to the diffraction limit of the telescope, the genuine triple correlation technique ensures a better SNR than the near-axis Knox-Thompson technique. The simplifications allow a complete analysis of the noise properties at all levels of light.en
dc.format.extent1555654 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherSpringer-Verlagen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?1990A&A...238..485Ken
dc.rights(1990) by the European Southern Observatory. Scanned images provided by the NASA ADS.en
dc.subjectBINARY STARSen
dc.subjectSPECKLE INTERFEROMETRYen
dc.subjectSPECTRUM ANALYSISen
dc.subjectWEIGHTING FUNCTIONSen
dc.subjectATMOSPHERIC TURBULENCEen
dc.subjectIMAGE PROCESSINGen
dc.subjectSEEING (ASTRONOMY)en
dc.subjectSIGNAL TO NOISE RATIOSen
dc.titleOptimum weighting function in bispectral analysis in speckle interferometry - Binary star parity detectionen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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