GRAVITY: a four-telescope beam combiner instrument for the VLTI
S. Gillessen, F. Eisenhauer, G. Perrin, W. Brandner, C. Straubmeier, K. Perraut, A. Amorim, M. Schöller, C. Araujo-Hauck, H. Bartko, H. Baumeister, J. -P. Berge… 展开作者
S. Gillessen, F. Eisenhauer, G. Perrin, W. Brandner, C. Straubmeier, K. Perraut, A. Amorim, M. Schöller, C. Araujo-Hauck, H. Bartko, H. Baumeister, J. -P. Berger, P. Carvas, F. Cassaing, F. Chapron, E. Choquet, Y. Clenet, C. Collin, A. Eckart, P. Fedou, S. Fischer, E. Gendron, R. Genzel, P. Gitton, F. Gonte, A. Gräter, P. Haguenauer, M. Haug, X. Haubois, T. Henning, S. Hippler, R. Hofmann, L. Jocou, S. Kellner, P. Kervella, R. Klein, N. Kudryavtseva, S. Lacour, V. Lapeyrere, W. Laun, P. Lena, R. Lenzen, J. Lima, D. Moch, D. Moratschke, T. Moulin, V. Naranjo, U. Neumann, A. Nolot, T. Paumard, O. Pfuhl, S. Rabien, J. Ramos, J. M. Rees, R. -R. Rohloff, D. Rouan, G. Rousset, A. Sevin, M. Thiel, K. Wagner, M. Wiest, S. Yazici, D. Ziegler
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20 pages, Proceedings SPIE Astronomical Telescopes and Instrumentation Conference 2010
GRAVITY is an adaptive optics assisted Beam Combiner for the second generation VLTI instrumentation. The instrument will provide high-precision narrow-angle astrometry and phase-referenced interferometric imaging in the astronomical K-band for faint objects. We describe the wide range of science that will be tackled with this instrument, highlighting the unique capabilities of the VLTI in combination with GRAVITY. The most prominent goal is to observe highly relativistic motions of matter close to the event horizon of Sgr A*, the massive black hole at center of the Milky Way. We present the preliminary design that fulfils the requirements that follow from the key science drivers: It includes an integrated optics, 4-telescope, dual feed beam combiner operated in a cryogenic vessel; near-infrared wavefrontsensing adaptive optics; fringe-tracking on secondary sources within the field of view of the VLTI and a novel metrology concept. Simulations show that 10 μas astrometry within few minutes is feasible for a source with a magnitude of mK = 15 like Sgr A*, given the availability of suitable phase reference sources (mK = 10). Using the same setup, imaging of mK = 18 stellar sources in the interferometric field of view is possible, assuming a full night of observations and the corresponding UV coverage of the VLTI.
Asgard/NOTT: L-band nulling interferometry at the VLTI -- III. The mid-infrared integrated optics beam combiner for NOTT
I. Physikalisches Institut der Universität zu Köln（科隆大学第一物理研究所）；Department of Physics & Astronomy, University of California, Los Angeles（加州大学洛杉矶分校物理与天文学系）；Institute of Astronomy, KU Leuven（鲁汶大学天体物理研究所）
Stellar interferometry with a K-band integrated optics beam combiner instrument at the CHARA Array - I. First on-sky fringes for CHARIOT
Corning Optical Communications GmbH & Co. KG（康宁光学通讯有限公司）；Leibniz-Institut für Astrophysik Potsdam（波茨坦阿斯特罗物理学会莱布尼茨研究所）；I. Physikalisches Institut, Universität zu Köln（科隆大学第一物理研究所）；The CHARA Array of Georgia State University（佐治亚州立大学CHARA阵列）；Institute of Photonics and Quantum Sciences, Heriot-Watt University（赫瑞-瓦特大学光子与量子科学研究所）；Humboldt-Universität zu Berlin（柏林洪堡大学）
Pushing high angular resolution and high contrast observations on the VLTI from Y to L band with the Asgard instrumental suite: integration status and plans
Large Interferometer For Exoplanets (LIFE): VII. Practical implementation of a five-telescope kernel-nulling beam combiner with a discussion on instrumental uncertainties and redundancy benefits
Pushing high angular resolution and high contrast observations on the VLTI from Y to L band with the Asgard instrumental suite: integration status and plans
Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange（蔚蓝海岸大学、蔚蓝海岸天文台、法国国家科学研究中心、拉格朗日实验室）；Research School of Astronomy and Astrophysics, College of Science, Australian National University（澳大利亚国立大学理学院天文学与天体物理学家研究学院）；School of Physics and Astronomy, University of Exeter（埃克塞特大学物理与天文学院）；Institute of Astronomy, KU Leuven（鲁汶大学天文学研究所）；Space sciences, Technologies & Astrophysics Research (STAR) Institute, University of Liège（列日大学空间科学与技术天体物理研究（STAR）研究所）；Institute for Particle Physics and Astrophysics, ETH Zurich（苏黎世联邦理工学院粒子物理与天体物理研究所）；Department of Astronomy and Steward Observatory（天文学系及斯图尔德天文台）；Large Binocular Telescope Observatory（大型双筒望远镜天文台）；I. Physikalisches Institut, Universität zu Köln（科隆大学第一物理研究所）；European Organisation for Astronomical Research in the Southern Hemisphere（欧洲南方天文台）；Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；Konkoly Observatory（孔科利天文台）；University of California, Los Angeles（加州大学洛杉矶分校）；Leiden Observatory, Leiden University（莱顿大学莱顿天文台）；Australian Astronomical Optics & School of Mathematical and Physical Sciences, Macquarie University（麦考瑞大学澳大利亚天文光学部及数学与物理科学学院）；Research Software Engineering, NUIT, Newcastle University（纽卡斯尔大学NUIT研究软件工程）
ngVLTI: Cost and Feasibility of a Four-Telescope VLTI Expansion for Milliarcsecond-Scale Imaging
Laboratoire d’Instrumentation et de Recherche en Astrophysique, Observatoire de Paris, PSL University, CNRS, Sorbonne Université, Université Paris Cité（巴黎天文台，PSL大学，法国国家科学研究中心，索邦大学，巴黎西岱大学）；European Southern Observatory（欧洲南方天文台）；Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；Université Grenoble Alpes, CNRS, IPAG（格勒诺布尔阿尔卑斯大学，法国国家科学研究中心，IPAG实验室）
SIMTERFERE: An optical interferometry simulator for quantifying the coherent flux stability of VLTI/GRAVITY+. Reaching per mill stability: Application to exoplanet spectroscopy
Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；Fakultät für Physik und Astronomie, Universität Heidelberg（海德堡大学物理与天文学学院）；Max-Planck-Institut für extraterrestrische Physik（马克斯·普朗克地外物理学研究所）；I. Physikalisches Institut, Universität zu Köln（科隆大学第一物理研究所）
Mid-IR Water-Vapor Seeing: Implications for ELT/METIS High-Contrast Imaging from VLTI Data
Indian Institute of Technology Kanpur（坎普尔印度理工学院）；Université de Liège（列日大学）；Australian National University（澳大利亚国立大学）；European Southern Observatory（欧洲南方天文台）；Université Côte d’Azur（蔚蓝海岸大学）；Max-Planck-Institut für Astronomie（马克斯·普朗克天文学研究所）；Leiden University（莱顿大学）；Macquarie University（麦考瑞大学）
