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

P. Wizinowich; B. McLeod; M. Lloyd-Hart; J. R.P. Angel; D. Colucci; R. Dekany; D. McCarthy; D. Wittman; I. Scott Fleming

doi:10.1364/AO.31.006036

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

P. Wizinowich, B. McLeod, M. Lloyd-Hart, J. R.P. Angel, D. Colucci, R. Dekany, D. McCarthy, D. Wittman, I. Scott Fleming

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

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 arcsec 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.

Original language	English (US)
Pages (from-to)	6036-6046
Number of pages	11
Journal	Applied optics
Volume	31
Issue number	28
DOIs	https://doi.org/10.1364/AO.31.006036
State	Published - Oct 1992

Keywords

Adaptive optics
Astronomy
Stellar interferometry
Telescopes
Wave-front sensing

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.31.006036

Cite this

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title = "Adaptive optics for array telescopes using piston-and-tilt wave-front sensing",

abstract = "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 arcsec 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.",

keywords = "Adaptive optics, Astronomy, Stellar interferometry, Telescopes, Wave-front sensing",

author = "P. Wizinowich and B. McLeod and M. Lloyd-Hart and Angel, {J. R.P.} and D. Colucci and R. Dekany and D. McCarthy and D. Wittman and {Scott Fleming}, I.",

year = "1992",

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language = "English (US)",

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T1 - Adaptive optics for array telescopes using piston-and-tilt wave-front sensing

AU - Wizinowich, P.

AU - McLeod, B.

AU - Lloyd-Hart, M.

AU - Angel, J. R.P.

AU - Colucci, D.

AU - Dekany, R.

AU - McCarthy, D.

AU - Wittman, D.

AU - Scott Fleming, I.

PY - 1992/10

Y1 - 1992/10

N2 - 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 arcsec 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.

AB - 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 arcsec 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.

KW - Adaptive optics

KW - Astronomy

KW - Stellar interferometry

KW - Telescopes

KW - Wave-front sensing

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

Abstract

Keywords

ASJC Scopus subject areas

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