L'exoplanétologie est un domaine très actif de l'astronomie moderne avec des questions
encore ouvertes: comment les systèmes planétaires se forment-ils et évoluent-ils; pourquoi …

NASA's Nancy Grace Roman Space Telescope (formerly known as WFIRST) is a flagship
astrophysics mission planned for launch in 2025. The coronagraph instrument (CGI) on …

The Habitable Exoplanet Imaging Mission concept requires an optical coronagraph that
provides deep starlight suppression over a broad spectral bandwidth, high throughput for …

Hybrid Lyot Coronagraph (HLC) is one of the two operating modes of the Wide-Field
InfraRed Survey Telescope (WFIRST) coronagraph instrument. Since being selected by …

The Nancy Grace Roman Space Telescope (“Roman”), under development by NASA, will
investigate possible causes for the phenomenon of dark energy and detect and characterize …

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 …

Direct imaging and spectroscopy is the likely means by which we will someday identify,
confirm, and characterize an Earth-like planet around a nearby Sun-like star. This Chapter …

Detection and characterization of Earth-like planets around nearby stars using the direct
imaging technique is a key scientific objective of future NASA astrophysics flagship …

The Nancy Grace Roman Space Telescope, planned to launch in the mid-2020s, will be the
first space-based observatory to demonstrate active wavefront correction at high contrast …

We present recent laboratory results demonstrating high-contrast coronagraphy for the
future space-based large IR/Optical/Ultraviolet telescope recommended by the Decadal …