activity
20152024
most citedDemonstration of high contrast with an obscured aperture with the WFIRST-AFTA shaped pupil coronagraph

40 citations · 95 across the 8 of their papers we have counts for

collaborators

9 papers

astro-ph.IM2024

Current laboratory performance of starlight suppression systems, and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities

Bertrand Mennesson, Ruslan Belikov, Emiel Por +34

We summarize the current best polychromatic (10 to 20 % bandwidth) contrast performance demonstrated in the laboratory by different starlight suppression approaches and systems des…

astro-ph.IM2023

Experimental demonstration of spectral linear dark field control at NASA's high contrast imaging testbeds

Phillip K. Poon, Axel Potier, Garreth Ruane +6

Due to the low flux of exoEarths, long exposure times are required to spectrally characterize them. During these long exposures, the contrast in the dark hole will degrade as the t…

astro-ph.IM2023★ 1 cited

Comparative laboratory study of electric field conjugation algorithms

Niyati Desai, Axel Potier, Susan F. Redmond +5

Future space telescope coronagraph instruments hinge on the integration of high-performance masks and precise wavefront sensing and control techniques to create dark holes essentia…

astro-ph.IM2023★ 2 cited

Random Vibration Testing of Microelectromechanical Deformable Mirrors for Space-based High-Contrast Imaging

Axel Potier, Camilo Mejia Prada, Garreth Ruane +11

Space-based stellar coronagraph instruments aim to directly image exoplanets that are a fraction of an arcsecond separation and ten billion times fainter than their host star. To a…

astro-ph.IM2020

Microelectromechanical deformable mirror development for high-contrast imaging, part 1: miniaturized, flight-capable control electronics

Eduardo Bendek, Garreth Ruane, Camilo Mejia Prada +3

Deformable mirrors (DMs) are a critical technology to enable coronagraphic direct imaging of exoplanets with current and planned ground - and space-based telescopes as well as futu…

astro-ph.IM2020★ 25 cited

Wavefront sensing and control in space-based coronagraph instruments using Zernike's phase-contrast method

Garreth Ruane, J. Kent Wallace, John Steeves +14

Future space telescopes with coronagraph instruments will use a wavefront sensor (WFS) to measure and correct for phase errors and stabilize the stellar intensity in high-contrast…