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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

  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 6 — Jun. 1, 2009
  • pp: 1326–1334

Optimal method for exoplanet detection by angular differential imaging

Laurent M. Mugnier, Alberto Cornia, Jean-François Sauvage, Gérard Rousset, Thierry Fusco, and Nicolas Védrenne  »View Author Affiliations


JOSA A, Vol. 26, Issue 6, pp. 1326-1334 (2009)
http://dx.doi.org/10.1364/JOSAA.26.001326


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Abstract

We propose a novel method for the efficient direct detection of exoplanets from the ground using angular differential imaging. The method combines images appropriately, then uses the combined images jointly in a maximum-likelihood framework to estimate the position and intensity of potential planets orbiting the observed star. It takes into account the mixture of photon and detector noises and a positivity constraint on the planet’s intensity. A reasonable detection criterion is also proposed based on the computation of the noise propagation from the images to the estimated intensity of the potential planet. The implementation of this method is tested on simulated data that take into account static aberrations before and after the coronagraph, residual turbulence after adaptive optics correction, and noise.

© 2009 Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(110.2970) Imaging systems : Image detection systems
(110.3010) Imaging systems : Image reconstruction techniques
(110.1080) Imaging systems : Active or adaptive optics

ToC Category:
Imaging Systems

History
Original Manuscript: September 16, 2008
Revised Manuscript: February 13, 2009
Manuscript Accepted: March 24, 2009
Published: May 12, 2009

Citation
Laurent M. Mugnier, Alberto Cornia, Jean-François Sauvage, Gérard Rousset, Thierry Fusco, and Nicolas Védrenne, "Optimal method for exoplanet detection by angular differential imaging," J. Opt. Soc. Am. A 26, 1326-1334 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-6-1326

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