دورية أكاديمية
MIRC-X: A Highly Sensitive Six-telescope Interferometric Imager at the CHARA Array
| العنوان: | MIRC-X: A Highly Sensitive Six-telescope Interferometric Imager at the CHARA Array |
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| المؤلفون: | Anugu, Narsireddy, Le Bouquin, Jean-Baptiste, Monnier, John D., Kraus, Stefan, Setterholm, Benjamin R., Labdon, Aaron, Davies, Claire L., Lanthermann, Cyprien, Gardner, Tyler, Ennis, Jacob, Johnson, Keith J. C., ten Brummelaar, Theo, Schaefer, Gail, Sturmann, Judit |
| المساهمون: | Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France |
| المصدر: | The Astronomical Journal ; https://insu.hal.science/insu-03705176Test ; The Astronomical Journal, 2020, 160, ⟨10.3847/1538-3881/aba957⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2020 |
| المجموعة: | Université Savoie Mont Blanc: HAL |
| مصطلحات موضوعية: | Very long baseline interferometry, Michelson interferometry, Astronomical detectors, Binary stars, Astronomy data reduction, Astronomical instrumentation, Astronomy data acquisition, Interferometers, Young stellar objects, Exoplanet detection methods, Starspots, Astronomy data analysis, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Solar and Stellar Astrophysics, [SDU]Sciences of the Universe [physics] |
| الوقت: | 1769, 1045, 84, 154, 1861, 799, 1860, 805, 1834, 489, 1572, 1858 |
| الوصف: | International audience ; Michigan InfraRed Combiner-eXeter (MIRC-X) is a new highly sensitive six-telescope interferometric imager installed at the CHARA Array that provides an angular resolution equivalent of up to a 330 m diameter baseline telescope in J- and H-band wavelengths ( $\tfrac{\lambda }{2B}\sim 0.6$ mas). We upgraded the original Michigan InfraRed Combiner (MIRC) instrument to improve sensitivity and wavelength coverage in two phases. First, a revolutionary sub-electron noise and fast-frame-rate C-RED ONE camera based on an SAPHIRA detector was installed. Second, a new-generation beam combiner was designed and commissioned to (i) maximize sensitivity, (ii) extend the wavelength coverage to J band, and (iii) enable polarization observations. A low-latency and fast-frame-rate control software enables high-efficiency observations and fringe tracking for the forthcoming instruments of the CHARA Array. Since mid-2017, MIRC-X has been offered to the community and has demonstrated best-case H-band sensitivity down to 8.2 correlated magnitude. MIRC-X uses single-mode fibers to coherently combine the light from six telescopes simultaneously with an image-plane combination scheme and delivers a visibility precision better than 1%, and closure phase precision better than 1°. MIRC-X aims at (i) imaging protoplanetary disks, (ii) detecting exoplanets with precise astrometry, and (iii) imaging stellar surfaces and starspots at an unprecedented angular resolution in the near-infrared. In this paper, we present the instrument design, installation, operation, and on-sky results, and demonstrate the imaging capability of MIRC-X on the binary system ι Peg. The purpose of this paper is to provide a solid reference for studies based on MIRC-X data and to inspire future instruments in optical interferometry. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/arxiv/2007.12320; insu-03705176; https://insu.hal.science/insu-03705176Test; ARXIV: 2007.12320; BIBCODE: 2020AJ.160.158A |
| DOI: | 10.3847/1538-3881/aba957 |
| الإتاحة: | https://doi.org/10.3847/1538-3881/aba957Test https://insu.hal.science/insu-03705176Test |
| رقم الانضمام: | edsbas.1AC36D22 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3847/1538-3881/aba957 |
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