Bonse+ present a new high contrast imaging algorithm “4S - Signal-Safe Speckle Subtraction” demonstrated with the pre-recovery of the exoplanet AF Lep b from 2011 NaCo data. The software webpage has an interactive figure where you can play with and see the improvement over PCA. Nice! #astrodon 🔭🪐

Three images showing the planetary system of AF Lep b with 20 component PCA, 60 component PCA and the paper's 4S algorithm. The planet is not visible or obscured by speckle noise in the PCA images, but in the 4S image the planet is clearly seen to the lower right of the star at the 4 o'clock position.
Matthew Kenworthy @kenworthy