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Experimental study of a low-order wavefront sensor for a high-contrast coronagraphic imager at 1.2 lambda/D
Julien Lozi, Ruslan Belikov, Glenn Schneider +4
High-contrast imaging will be a challenge for future ELTs, because their vibrations create low-order aberrations - mostly tip/tilt - that reduce coronagraphic performances at 1.2 l…
Lyot-based Ultra-Fine Pointing Control System for Phase Mask Coronagraphs
Garima Singh, Frantz Martinache, Pierre Baudoz +3
High performance coronagraphic imaging at small inner working angle requires efficient control of low order aberrations. The absence of accurate pointing control at small separatio…
SCExAO as a precursor to an ELT exoplanet direct imaging instrument
Nemanja Jovanovic, Olivier Guyon, Frantz martinache +11
The Subaru Coronagraphic Extreme AO (SCExAO) instrument consists of a high performance Phase Induced Amplitude Apodisation (PIAA) coronagraph combined with an extreme Adaptive Opti…
The Optical Design of CHARIS: An Exoplanet IFS for the Subaru Telescope
Mary Anne Peters-Limbach, Tyler D. Groff, N. Jeremy Kasdin +15
High-contrast imaging techniques now make possible both imaging and spectroscopy of planets around nearby stars. We present the optical design for the Coronagraphic High Angular Re…
Experimental study of a low-order wavefront sensor for the high-contrast coronagraphic imager EXCEDE
Julien Lozi, Ruslan Belikov, Glenn Schneider +4
The mission EXCEDE (EXoplanetary Circumstellar Environments and Disk Explorer), selected by NASA for technology development, is designed to study the formation, evolution and archi…
The Subaru Coronagraphic Extreme Adaptive Optics Imager: First Results and On-Sky Performance
Thayne Currie, Olivier Guyon, Frantz Martinache +6
We present new on-sky results for the Subaru Coronagraphic Extreme Adaptive Optics imager (SCExAO) verifying and quantifying the contrast gain enabled by key components: the closed…