Phase-gradient reconstruction from photon-limited stellar speckle images

Details Phase-gradient reconstruction from photon-limited stellar speckle images Phase-gradient reconstruction from photon-limited stellar speckle images

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apopt..26.4246a&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 26, Oct. 1, 1987, p. 4246-4249. NSERC-supported research.

Statistics

Computation

8

Astronomical Photography, Computational Astrophysics, Image Reconstruction, Speckle Interferometry, Speckle Patterns, Data Correlation, Noise Reduction, Signal To Noise Ratios, Stellar Spectra

Scientific paper

The phase-gradient process for reconstructing stellar speckle images is implemented in a photon-address mode for application to images containing small numbers of photons. Comparisons are made with an address-mode Knox-Thompson process which show that the phase-gradient approach has computational advantages and better SNR performance. Reconstructions from simulated data and real data for the binary source Beta Delphinius are presented.

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