Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.226..145h&link_type=abstract
In ESA Colloq. on Kilometric Opt. Arrays in Space p 145-151 (SEE N86-11096 01-89)
Astronomy and Astrophysics
Astronomy
Digital Simulation, Image Reconstruction, Interferometers, Interferometry, Spaceborne Telescopes, Speckle Patterns, Masking, Photon Density, Point Sources, Ultraviolet Astronomy
Scientific paper
Image reconstruction for the Imaging Speckle Interferometer (ISI) a space-based multiple mirror interferometer which can produce high-resolution images is discussed. At short UV wavelengths a multiple mirror interferometer produces speckle interferograms caused by aberrations of the interferometer. From the speckle interferograms true images can easily be reconstructed with the speckle masking method. In speckle masking no point source is required near the object. Digital simulations of image reconstruction from ISI data, in which various multiple mirror pupil functions and various amounts of photon noise (1000 to 10 photons per pixel) were simulated are shown. Speckle spectroscopy with ISI, and image reconstruction from 2-telescope interferograms are considered.
Hofmann Karl Heinrich
Weigelt Gerd
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