Image truncation in stellar speckle imaging.

Details Image truncation in stellar speckle imaging. Image truncation in stellar speckle imaging.

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992josaa...9.1955j&link_type=abstract

Journal of the Optical Society of America A, Vol. 9, No. 11, p. 1955 - 1963

Physics

1

Scientific paper

Stellar speckle images are often truncated by the edges of the image detector. It is shown that even modest amounts of image truncation can cause important errors in the second-order spectra of speckle interferometry and the Knox-Thompson algorithm. A method is presented for estimating an approximate upper bound on the truncation error given the telescope, atmospheric seeing, detector size, and spatial sampling rate. Reconstructed images of the triple star ADS 11344 from simulations and from real data illustrate the distortions and negative artifacts caused by image truncations.

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