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Apodized Pupil Lyot Coronagraphs for Arbitrary Apertures. IV. Reduced Inner Working Angle and Increased Robustness to Low-Order Aberrations
Mamadou N'Diaye, Laurent Pueyo, Rémi Soummer
The Apodized Pupil Lyot Coronagraph (APLC) is a diffraction suppression system installed in the recently deployed instruments Palomar/P1640, Gemini/GPI, and VLT/SPHERE to allow dir…
High-contrast imager for Complex Aperture Telescopes (HiCAT): 2. Design overview and first light results
Mamadou N'Diaye, Elodie Choquet, Sylvain Egron +13
We present a new high-contrast imaging testbed designed to provide complete solutions in wavefront sensing, control and starlight suppression with complex aperture telescopes. The…
High-contrast imager for Complex Aperture Telescopes (HiCAT): 1. Testbed design
Mamadou N'Diaye, Elodie Choquet, Laurent Pueyo +11
Searching for nearby habitable worlds with direct imaging and spectroscopy will require a telescope large enough to provide angular resolution and sensitivity to planets around a s…
Archival Legacy Investigations of Circumstellar Environments: Overview and First Results
Élodie Choquet, Laurent Pueyo, J. Brendan Hagan +12
We are currently conducting a comprehensive and consistent re-processing of archival HST-NICMOS coronagraphic surveys using advanced PSF subtraction methods, entitled the Archival…
James Webb Space Telescope Optical Simulation Testbed I: Overview and First Results
Marshall D. Perrin, Rémi Soummer, Élodie Choquet +13
The James Webb Space Telescope (JWST) Optical Simulation Testbed (JOST) is a tabletop workbench to study aspects of wavefront sensing and control for a segmented space telescope, i…
James Webb Space Telescope Optical Simulation Testbed II. Design of a Three-Lens Anastigmat Telescope Simulator
Élodie Choquet, Olivier Levecq, Mamadou N'Diaye +2
The James Webb Space Telescope (JWST) Optical Simulation Testbed (JOST) is a tabletop experiment designed to reproduce the main aspects of wavefront sensing and control (WFSC) for…
Five Debris Disks Newly Revealed in Scattered Light from the HST NICMOS Archive
Rémi Soummer, Marshall D. Perrin, Laurent Pueyo +12
We have spatially resolved five debris disks (HD 30447, HD 35841, HD 141943, HD 191089, and HD 202917) for the first time in near-infrared scattered light by reanalyzing archival H…