High-resolution imaging techniques based on optical synthetic aperture

Details High-resolution imaging techniques based on optical synthetic aperture High-resolution imaging techniques based on optical synthetic aperture

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007spie.6721e...3w&link_type=abstract

3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes. Edited by

Astronomy and Astrophysics

Astronomy

Scientific paper

The quest for higher angular resolution in astronomy will inevitably require the telescope with large aperture. However, the diameter of primary mirror is limited by the fabrication problems as well as the scaling laws of manufacturing costs. Optical synthetic aperture telescopes represent a promising new technology to overcome the above-mentioned problems. Three incoherent imaging techniques based on optical synthetic aperture including Fourier telescopy, Michelson interferometer and Fizeau interferometer are described in the paper. Fourier telescopy is an active imaging technique combined with the advantages of synthetic aperture measurement. Michelson interferometers measure spatial Fourier transform of objects, while Fizeau interferometers produce direct images with full instant frequency coverage. We give an overview of the basic aspects and the differences of these techniques.

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