title: Phase-gradient reconstruction from photon-limited stellar speckle images.
abstract: 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.
authors.forename: G J
authors.initials: GJ
authors.lastname: Aitken
authors.forename: R
authors.initials: R
authors.lastname: Johnson