The first images from optical aperture synthesis

Details The first images from optical aperture synthesis The first images from optical aperture synthesis

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.328..694h&link_type=abstract

Nature (ISSN 0028-0836), vol. 328, Aug. 20, 1987, p. 694-696.

Astronomy and Astrophysics

Astronomy

68

Astronomical Photography, Diffraction Limited Cameras, Synthetic Apertures, Telescopes, Atmospheric Effects, Power Spectra, Stars

Scientific paper

The attainment of diffraction-limited images with large ground-based optical telescopes is an important objective for many astronomical programmes. The limited resolution set by atmospheric fluctuations in refractive index can be overcome by applying aperture synthesis and phase-closure techniques to short-exposure images taken through non-redundant aperture masks. The first optical images obtained with this technique are presented here. The diffraction limit is achieved with good dynamic range even when the number of photons in each short exposure is small (very low100).

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