GPI PSF subtraction with TLOCI: the next evolution in exoplanet/disk high-contrast imaging

Christian Marois; Carlos Correia; Raphael Galicher; Patrick Ingraham; Bruce Macintosh; Thayne Currie; Rob De Rosa

doi:10.1117/12.2055245

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21 July 2014 GPI PSF subtraction with TLOCI: the next evolution in exoplanet/disk high-contrast imaging

Christian Marois, Carlos Correia, Raphael Galicher, Patrick Ingraham, Bruce Macintosh, Thayne Currie, Rob De Rosa

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Proceedings Volume 9148, Adaptive Optics Systems IV; 91480U (2014) https://doi.org/10.1117/12.2055245
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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, Carlos Correia, Raphael Galicher, Patrick Ingraham, Bruce Macintosh, Thayne Currie, and 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); https://doi.org/10.1117/12.2055245

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