Design, pointing control, and on-sky performance of the mid-infrared vortex coronagraph for the VLT/NEAR experiment

  title={Design, pointing control, and on-sky performance of the mid-infrared vortex coronagraph for the VLT/NEAR experiment},
  author={A.-L. Maire and Elsa Huby and Olivier Absil and G{\'e}rard Zins and Markus Kasper and Christian Delacroix and Serban Leveratto and Mikael Karlsson and Garreth J. Ruane and Hans Ulrich K{\"a}ufl and Gilles Orban de Xivry and Prashant Pathak and Lorenzo Pettazzi and Philippe Duhoux and Johann Kolb and {\'E}ric Pantin and A. J. Eldorado Riggs and Ralf Siebenmorgen and Dimitri Mawet},
  journal={Journal of Astronomical Telescopes, Instruments, and Systems},
  pages={035003 - 035003}
  • A. Maire, E. Huby, +16 authors D. Mawet
  • Published 1 July 2020
  • Physics, Engineering
  • Journal of Astronomical Telescopes, Instruments, and Systems
Abstract. Vortex coronagraphs have been shown to be a promising avenue for high-contrast imaging in the close-in environment of stars at thermal infrared (IR) wavelengths. They are included in the baseline design of the mid-infrared extremely large telescope imager and spectrograph. To ensure good performance of these coronagraphs, a precise control of the centering of the star image in real time is needed. We previously developed and validated the quadrant analysis of coronagraphic images for… Expand
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