Kévin Barjot

Stellar interferometry with a K-band integrated optics beam combiner instrument at the CHARA Array - I. First on-sky fringes for CHARIOT

Aline N. Dinkelaker, Kévin Barjot, Nic Scott, Aurélien Benoît et autres

Abstract We present the instrument description and the first on-sky observations for the new CHara ARray Integrated Optics Testbench (CHARIOT) at the CHARA Array. CHARIOT is a 2-telescope proof-of-concept instrument that utilises a fibre-connectorised beam combiner fabricated by ultrafast laser-inscription in Infrasil …

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Asgard/NOTT:

Ahmed Sanny, Lucas Labadie, Simon Gross, Kévin Barjot et autres

Context. The NOTT visitor instrument at the VLTI is designed to characterize hot exozodiacal dust and young Jupiter-like planets at the water snowline via L′ band nulling interferometry. The beam combination will be achieved by a four-telescope integrated optics beam combiner, which …

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Asgard/NOTT: L -band nulling interferometry at the VLTI

Ahmed Sanny, Lucas Labadie, Simon Gross, Kévin Barjot et autres

Context . The NOTT visitor instrument at the VLTI is designed to characterize hot exozodiacal dust and young Jupiter-like planets at the water snowline via L ′ band nulling interferometry. The beam combination will be achieved by a four-telescope integrated optics beam …

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Asgard/NOTT: L-band nulling interferometry at the VLTI -- III. The mid-infrared integrated optics beam combiner for NOTT

Ahmed Sanny, Lucas Labadie, Simon Gross, Kévin Barjot et autres

The NOTT visitor instrument at the VLTI will characterize hot exozodiacal dust and young Jupiter-like planets at the water snowline via L' band nulling interferometry. The beam combination will be achieved by a four-telescope integrated optics beam combiner (IOBC) that fulfills specific …

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Characterization of Astrophotonic Components with the CHara ARray Integrated Optics Testbench (CHARIOT)

Aline N. Dinkelaker, Kévin Barjot, Alyssa V. Mayer, Lucas Labadie et autres

Photonic components play an important role in the development of astronomical instruments, both to increase the capabilities of instruments at existing telescope facilities and for the next generation of extremely large (30-m class) telescopes. These chip- and fiber-based astrophotonic components [1] can …

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Spectroscopy below the diffraction limit with FIRST at the Subaru Telescope

Elsa Huby, Sébastien Vievard, Gaspard Duchêne, Olivier Guyon et autres

FIRST (Fibered Imager foR a Single Telescope instrument) is a post-AO instrument that enables high-contrast imaging and spectroscopy at spatial scales below the diffraction limit. FIRST achieves sensitivity and accuracy through a unique combination of sparse aperture masking, spatial filtering by single-mode …

Chara Array integrated optics testbench (CHARIOT) for on-sky experiments

Alyssa V. Mayer, Aline N. Dinkelaker, Kalaga V. Madhav, Lucas Labadie et autres

The goal of the CHara ARray Integrated Optics Testbench (CHARIOT) is to establish a fully characterized (nulling) interferometry setup for on-sky tests of novel astrophotonic 2D or 3D beam combiners for the interferometry community worldwide. CHARIOT is planned for four telescope beams …

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FIRST 5T 3D: Interferometric performances of a laser written bream combiner for FIRST/SUBARU

Guillermo Martín, Kévin Barjot, Manon Lallement, Harry-Dean Kenchington-Goldsmith et autres

FIRST (Fibered Imager foR a Single Telescope instrument) is an on-sky instrument at SUBARU Telescope that enables high-contrast imaging and spectroscopy, thanks to a unique combination of pairwise combination of sub-apertures using a Photonic Integrated Circuit that allows spatial filtering by single-mode …

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Photonic spectro-interferometry with SCExAO/FIRST at the Subaru Telescope: towards Hα imaging of protoplanets

Sébastien Vievard, Manon Lallement, Elsa Huby, S. Lacour et autres

FIRST is a post Extreme Adaptive-Optics (ExAO) spectro-interferometer operating in the Visible (600-800 nm, R∼400). Its exquisite angular resolution (a sensitivity analysis of on-sky data shows that bright companions can be detected down to 0.25λ/D) combined with its sensitivity to pupil phase …

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Photonic spectro-interferometry with SCExAO/FIRST at the Subaru Telescope: towards H-alpha imaging of protoplanets

Sébastien Vievard, Manon Lallement, Elsa Huby, S. Lacour et autres

FIRST is a post Extreme Adaptive-Optics (ExAO) spectro-interferometer operating in the Visible (600-800 nm, R~400). Its exquisite angular resolution (a sensitivity analysis of on-sky data shows that bright companions can be detected down to 0.25lambda/D) combined with its sensitivity to pupil phase …

Single-aperture spectro-interferometry in the visible at the Subaru telescope with FIRST: First on-sky demonstration on Keho‘oea (αLyrae) and Hokulei (αAurigae)

Sébastien Vievard, Elsa Huby, S. Lacour, Olivier Guyon et autres

Aims.FIRST is a spectro-interferometer combining, in the visible, the techniques of aperture masking and spatial filtering thanks to single-mode fibers. By turning a monolithic telescope into an interferometer, this instrument aims to deliver high contrast capabilities at spatial resolutions that are inaccessible …

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Single-aperture spectro-interferometry in the visible at the Subaru telescope with FIRST: First on-sky demonstration on Keho'oea (α Lyrae) and Hokulei (α Aurigae)

Sébastien Vievard, Elsa Huby, Sylvestre Lacour, Olivier Guyon et autres

FIRST is a spectro-interferometer combining, in the visible, the techniques of aperture masking and spatial filtering thanks to single-mode fibers. This instrument aims to deliver high contrast capabilities at spatial resolutions that are inaccessible to classical coronagraphic instruments. The technique implemented is …

jp, rs, fr, us (code pays fourni par la source)