Asgard/NOTT: first lab assembly and experimental results

G. Garreau, A. Bigioli, R. Laugier, B. La Torre, M. A. Martinod, K. Missiaen, J. Morren, G. Raskin, M. Salman, S. Gross, M. Ireland, A. P. Joó, L. Labadie, S. Madden, A. Mazzoli, G. Medgyesi, A. Sanny, A. Taras, B. Vandenbussche, D. Defrère

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Asgard/NOTT is an ERC-funded project hosted at KU Leuven and is part of a new visitor instrumental suite, called Asgard, under preparation for the Very Large Telescope Interferometer (VLTI). Leveraging nulling capabilities and the long VLTI baselines, it is optimized for high-contrast imaging of the snow line region around young nearby main-sequence stars. This will enable the characterization of the atmosphere of young giant exoplanets and warm/hot exozodiacal dust with spectroscopy in the L'-band (3.5-4.0 µm). In this work, we present the first lab assembly of the instrument done at KU Leuven and the technical solutions to tackle the challenge of performing nulling in the mid-infrared despite the thermal background. The opto-mechanical design of the warm optics and the injection system for the photonic chip are described. The alignment procedure used to assemble the system is also presented. Finally, the first experimental results, including fringes and null measurements, are given and confirm the adequacy of the bench to test and optimize the Asgard/NOTT instrument.

Original languageEnglish
Title of host publicationOptical and Infrared Interferometry and Imaging IX
EditorsJens Kammerer, Stephanie Sallum, Joel Sanchez-Bermudez
PublisherSPIE
Number of pages14
ISBN (Electronic)9781510675131
DOIs
Publication statusPublished - 28 Aug 2024
EventOptical and Infrared Interferometry and Imaging IX 2024 - Yokohama, Japan
Duration: 17 Jun 202422 Jun 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13095
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical and Infrared Interferometry and Imaging IX 2024
Country/TerritoryJapan
CityYokohama
Period17/06/2422/06/24

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