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arXiv · 2012.12416

FIRST, a Pupil-Remapping Fiber Interferometer at the Subaru Telescope: on-sky results

Sébastien Vievard·Elsa Huby·Sylvestre Lacour·Kevin Barjot·Guillermo Martin·Nick Cvetojevic·Vincent Deo·Olivier Guyon·Julien Lozi·Takayuki Kotani·Nemanja Jovanovic·Franck Marchis·Guillaume Duchène·Vincent Lapeyrere·Daniel Rouan·Guy Perrin
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Abstract

FIRST, the Fibered Imager foR a Single Telescope, is a spectro-imager using single-mode fibers for pupil remapping, allowing measurements beyond the telescope diffraction limit. Integrated on the Subaru Coronagraphic Extreme Adaptive Optics instrument at the Subaru Telescope, it benefits from a very stable visible light wavefront allowing to acquire long exposure and operate on significantly fainter sources than previously possible. On-sky results demonstrated the ability of the instrument to detect stellar companions separated 43mas in the case of the Capella binary system. A similar approach on an extremely large telescope would offer unique scientific opportunities for companion detection and characterization at very high angular resolution.

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Sébastien Vievard, Elsa Huby, Sylvestre Lacour, Kevin Barjot, Guillermo Martin, Nick Cvetojevic, Vincent Deo, Olivier Guyon, Julien Lozi, Takayuki Kotani, Nemanja Jovanovic, Franck Marchis, Guillaume Duchène, Vincent Lapeyrere, Daniel Rouan, Guy Perrin. 2020-12-22. FIRST, a Pupil-Remapping Fiber Interferometer at the Subaru Telescope: on-sky results. https://arxiv.org/abs/2012.12416

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