DETECTION AND CHARACTERIZATION OF EXOPLANETS AND DISKS USING PROJECTIONS ON KARHUNEN–LOÈVE EIGENIMAGES

@article{Soummer2012DETECTIONAC,
  title={DETECTION AND CHARACTERIZATION OF EXOPLANETS AND DISKS USING PROJECTIONS ON KARHUNEN–LO{\`E}VE EIGENIMAGES},
  author={R{\'e}mi Soummer and Laurent Pueyo and James E. Larkin},
  journal={The Astrophysical Journal Letters},
  year={2012},
  volume={755}
}
We describe a new method to achieve point-spread function (PSF) subtractions for high-contrast imaging using principal component analysis that is applicable to both point sources or extended objects (disks). Assuming a library of reference PSFs, a Karhunen–Loève transform of these references is used to create an orthogonal basis of eigenimages on which the science target is projected. For detection this approach provides comparable suppression to the Locally Optimized Combination of Images… 
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