{"paper":{"title":"First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Amorim, A. Buron, A. Eckart, A. Huber, A. Janssen, A. Kaufer, A. M\\'erand, A. Pfl\\\"uger, A. Ram\\'irez, B. Lazareff, B. Wolff, C.A. Hummel, C. Collin, C. Deen, C.E. Garcia Dabo, C. Rau, C. Straubmeier, D. Popovic, D. Ziegler, \\'E. Choquet, E. Gendron, E. M\\\"uller, E. Sturm, E. Wieprecht, E. Wiezorrek, F. Cassaing, F. Chapron, F. Delplancke-Str\\\"obele, F. Derie, F. Eisenhauer, F. Gonte, F. Haussmann, F. M\\\"uller, F. Vincent, G. \\'Avila, G. Duvert, G. Finger, G. Jakob, G. Perrin, GRAVITY Collaboration: R. Abuter, G. Rousset, G. Zins, H. Bonnet, I. Percheron, I. Waisberg, I. Wank, J.-B. Le Bouquin, J. Dexter, J. Kolb, J. Moreno-Ventas, J. Panduro, J.P. Berger, J. Ramos, J. Sanchez-Bermudez, J. Spyromilio, J. Weber, J. Woillez, K. Perraut, K.R.W. Tristram, L. Burtscher, L. Jochum, L. Jocou, L. Kern, L. Mehrgan, L. Pallanca, L. Pasquini, M. Accardo, M. Benisty, M. Ebert, M. Esselborn, M. Grould, M. Haug, M. Horrobin, M. Kiekebusch, M. Kulas, M. Lippa, M. Mellein, M. Riquelme, M. Sch\\\"oller, M. Suarez, M. Wiest, M. Wittkowski, N. Anugu, N. Azouaoui, N. Blind, N. Hubin, N. Schuhler, N. Ventura, O. Hans, O. Pfuhl, P. Bourget, P. F\\'edou, P. Garcia, P. Gordo, P. Haguenauer, P. Kervella, P. L\\`ena, P.M. Plewa, P.T. de Zeeuw, R. Brast, R. Dembet, R. Garcia Lopez, R. Genzel, R. Klein, R. Lenzen, R.-R. Rohloff, S. Gillessen, S. Guieu, S. Hippler, S. Kellner, S. Lacour, S. L\\'ev\\^eque, S. Oberti, S. Rabien, S. Scheithauer, S. Yazici, Th. Henning, T. Moulin, T. Ott, T. Paumard, T. Phan Duc, U. Gr\\\"ozinger, U. Neumann, V. Coud\\'e du Foresto, V. Lapeyr\\`ere, W. Brandner, W. de Wit, X. Haubois, Y. Cl\\'enet, Y. Kok, Y. Magnard, Z. Hubert","submitted_at":"2017-05-05T18:00:05Z","abstract_excerpt":"GRAVITY is a new instrument to coherently combine the light of the European Southern Observatory Very Large Telescope Interferometer to form a telescope with an equivalent 130 m diameter angular resolution and a collecting area of 200 m$^2$. The instrument comprises fiber fed integrated optics beam combination, high resolution spectroscopy, built-in beam analysis and control, near-infrared wavefront sensing, phase-tracking, dual beam operation and laser metrology [...]. This article gives an overview of GRAVITY and reports on the performance and the first astronomical observations during commi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02345","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}