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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…
Estimation and correction of wavefront aberrations using the self-coherent camera: laboratory results
J. Mazoyer, P. Baudoz, R. Galicher +2
Direct imaging of exoplanets requires very high contrast levels, which are obtained using coronagraphs. But residual quasi-static aberrations create speckles in the focal plane dow…
Laboratory demonstration of a mid-infrared AGPM vector vortex coronagraph
Christian Delacroix, Olivier Absil, Pontus Forsberg +9
Coronagraphy is a powerful technique to achieve high contrast imaging and hence to image faint companions around bright targets. Various concepts have been used in the visible and…
L'-band AGPM vector vortex coronagraph's first light on VLT/NACO: Discovery of a late-type companion at two beamwidths from an F0V star
D. Mawet, O. Absil, C. Delacroix +20
Context. High contrast imaging has thoroughly combed through the limited search space accessible with first-generation ground-based adaptive optics instruments and the Hubble Space…