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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…
Could Jean-Dominique Cassini see the famous division in Saturn's rings?
Julien Lozi, Jean-Michel Reess, Alain Semery +8
Nowadays, astronomers want to observe gaps in exozodiacal disks to confirm the presence of exoplanets, or even make actual images of these companions. Four hundred and fifty years…
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…