Status of FIRST spectro-interferometer on SCExAO: sensitivity study and characterization of 5-telescopes visible photonics integrated circuits

Manon Lallement; Elsa Huby; Sylvestre Lacour; Sebastien Vievard; Guillermo Martin; Harry-Dean Kenchington Goldsmith; Kévin Barjot; Olivier Guyon; Julien Lozi; Vincent Deo; Kyohoon Ahn; Miles Lucas; Cécil Pham; Cédric Cassagnettes; Daniel Rouan; Vincent Lapeyrere; Guy Perrin; Nick Cvetojevic; Frantz Martinache; Franck Marchis; Takayuki Kotani; Gaspard Duchene

doi:10.1117/12.3018406

28 August 2024 Status of FIRST spectro-interferometer on SCExAO: sensitivity study and characterization of 5-telescopes visible photonics integrated circuits

Manon Lallement, Elsa Huby, Sylvestre Lacour, Sebastien Vievard, Guillermo Martin, Harry-Dean Kenchington Goldsmith, Kévin Barjot, Olivier Guyon, Julien Lozi, Vincent Deo, Kyohoon Ahn, Miles Lucas, Cécil Pham, Cédric Cassagnettes, Daniel Rouan, Vincent Lapeyrere, Guy Perrin, Nick Cvetojevic, Frantz Martinache, Franck Marchis, Takayuki Kotani, Gaspard Duchene

Author Affiliations +

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 1309508 (2024) https://doi.org/10.1117/12.3018406
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The Fiber Imager foR a Single Telescope (FIRST) is a visible spectro-interferometer (600-760 nm, R~400) installed on the Subaru telescope's extreme adaptive optics platform (SCExAO). It provides high-precision spatial coherence measurements with high angular resolution (~8 mas at 656 nm, ~1% coherence accuracy) by combining light from sub-apertures of the telescope pupil. We present two upgrades of the instrument towards H𝛼 detection of protoplanets. We report on the integration of a new 4000-resolution spectrograph and on the sensitivity of the instrument. We also present the characterisation of a high performance visible photonic integrated circuit prototype used for the interferometric combination of 5 sub-apertures.

Conference Presentation

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Manon Lallement, Elsa Huby, Sylvestre Lacour, Sebastien Vievard, Guillermo Martin, Harry-Dean Kenchington Goldsmith, Kévin Barjot, Olivier Guyon, Julien Lozi, Vincent Deo, Kyohoon Ahn, Miles Lucas, Cécil Pham, Cédric Cassagnettes, Daniel Rouan, Vincent Lapeyrere, Guy Perrin, Nick Cvetojevic, Frantz Martinache, Franck Marchis, Takayuki Kotani, and Gaspard Duchene "Status of FIRST spectro-interferometer on SCExAO: sensitivity study and characterization of 5-telescopes visible photonics integrated circuits", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 1309508 (28 August 2024); https://doi.org/10.1117/12.3018406

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