26 September 2013 Small-angle, high-contrast exoplanet imaging with the L-band AGPM vector vortex coronagraph now offered at the VLT
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Abstract
In November 2012, we installed an L-band annular groove phase mask (AGPM) vector vortex coronagraph (VVC) inside NACO, the adaptive optics camera of ESO’s Very Large Telescope. The mask, made out of diamond subwavelength gratings has been commissioned, science qualified, and is now offered to the community. Here we report ground-breaking on-sky performance levels in terms of contrast, inner working angle, and discovery space. This new practical demonstration of the VVC, coming a few years after Palomar’s and recent record-breaking lab experiments in the visible (E. Serabyn et al. 2013, these proceedings), shows once again that this new-generation coronagraph has reached a high level of maturity.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dimitri Mawet, Olivier Absil, Julien Milli, Christian Delacroix, Julien H. Girard, Jared O'Neal, Pierre Baudoz, Anthony Boccaletti, Pierre Bourget, Pontus Forsberg, Frederic Gonté, Serge Habraken, Mikael Karlsson, Markus Kasper, Anne-Marie Lagrange, Jean-Louis Lizon, Koraljka Muzic, Eduardo Peña, Richard Olivier, Nicolas Slusarenko, Lowell E. Tacconi-Garman, Jean Surdej, "Small-angle, high-contrast exoplanet imaging with the L-band AGPM vector vortex coronagraph now offered at the VLT", Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88640I (26 September 2013); doi: 10.1117/12.2025501; https://doi.org/10.1117/12.2025501
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