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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 11, Iss. 1 — Jan. 1, 1994
  • pp: 379–393

Wave-front correction by one or more synthetic beacons

Richard J. Sasiela  »View Author Affiliations


JOSA A, Vol. 11, Issue 1, pp. 379-393 (1994)
http://dx.doi.org/10.1364/JOSAA.11.000379


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Abstract

Adaptive optics has been used in a cooperative mode to measure the phase distortion of the light from a star and to correct its image with a deformable mirror. A wave-front sensor in the adaptive-optics system that measures the phase aberrations requires that an object be fairly bright for accurate performance of the measurement. The use of synthetic beacons provides a means of correcting the images of objects that are too dim to allow one to use their light to provide correction in a cooperative mode. Synthetic beacons at a finite distance do not provide a perfect correction in imaging an object at a greater distance. The error in making a correction with one or more beacons is analyzed. Analytical expressions that can be used to determine performance in a variety of geometries, with various beacon altitudes and numbers, are derived. This analysis is applied to 60-cm and 4-m systems.

© 1994 Optical Society of America

History
Original Manuscript: September 14, 1992
Revised Manuscript: April 9, 1993
Manuscript Accepted: April 14, 1993
Published: January 1, 1994

Citation
Richard J. Sasiela, "Wave-front correction by one or more synthetic beacons," J. Opt. Soc. Am. A 11, 379-393 (1994)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-11-1-379

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