21 July 2014 GPI PSF subtraction with TLOCI: the next evolution in exoplanet/disk high-contrast imaging
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Abstract
A new exoplanet finding algorithm called TLOCI (for Template LOCI) is presented to subtract high-contrast imaging PSFs by “maximizing a companion signal-to-noise ratio”. TLOCI uses an input spectrum and template PSFs to optimize the reference image least-squares coefficients to minimize the flux contamination via self-subtraction of any specific planet in the image, while trying to maximize, at the same time, the noise subtraction. The new algorithm has been developed using on sky Gemini Planet Imager data and has achieved impressive contrast.
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Christian Marois, Christian Marois, Carlos Correia, Carlos Correia, Raphael Galicher, Raphael Galicher, Patrick Ingraham, Patrick Ingraham, Bruce Macintosh, Bruce Macintosh, Thayne Currie, Thayne Currie, Rob De Rosa, Rob De Rosa, } "GPI PSF subtraction with TLOCI: the next evolution in exoplanet/disk high-contrast imaging", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480U (21 July 2014); doi: 10.1117/12.2055245; https://doi.org/10.1117/12.2055245
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