High-resolution imaging using pupil segmentation.

Details High-resolution imaging using pupil segmentation. High-resolution imaging using pupil segmentation.

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990josaa...7.1237s&link_type=abstract

Journal of the Optical Society of America A, Vol. 7, No. 7, p. 1237 - 1242

Computer Science

3

Image Processing: Gravitational Lenses

Scientific paper

Recentering and selecting short-exposure images result significant improvements in spatial resolution compared with that for classical long-exposure images. A maximum gain in resolution of the order of 3 is possible. A pupil-segmentation experiment has been performed at the Cassegrain focus of the Canada-France-Hawaii telescope. A photon-counting camera records short-exposure images. The software processing is made after acquisition of the data. Recentering is made by cross correlation of the short-exposure images with a long-exposure image of a star or a contrasted object. The authors present results obtained on the gravitational lens Q2237+030.

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