Adaptive optics for array telescopes using piston-and-tilt wave-front sensing.

Details Adaptive optics for array telescopes using piston-and-tilt wave-front sensing. Adaptive optics for array telescopes using piston-and-tilt wave-front sensing.

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apopt..31.6036m&link_type=abstract

Applied Optics, Vol. 31, No. 28, p. 6036 - 6046

Physics

Optics

4

Scientific paper

A near-infrared adaptive optics system operating at ≍50 Hz has been used to control phase errors adaptively between two mirrors of the Multiple Mirror Telescope by stabilizing the position of the interference fringe in the combined unresolved far-field image. The resultant integrated images have angular resolutions of better than 0.1″and fringe contrasts of <0.6. Measurements of wave-front tilt have confirmed the wavelength independence of image motion. These results show that interferometric sensing of phase errors, when combined with a system for sensing the wave-front tilt of the individual telescopes, will provide a means of achieving a stable diffraction-limited focus with segmented telescopes or arrays of telescopes.

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