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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 447982.0, MPI für Astronomie / Publikationen_mpia
GRAVITY: microarcsecond astrometry and deep interferometric imaging with the VLT
Authors:Eisenhauer, F.; Perrin, G.; Brandner, W.; Straubmeier, C.; Böhm, A.; Baumeister, H.; Cassaing, F.; Clénet, Y.; Dodds-Eden, K.; Eckart, A.; Gendron, E.; Genzel, R.; Gillessen, S.; Gräter, A.; Gueriau, C.; Hamaus, N.; Haubois, X.; Haug, M.; Henning, T.; Hippler, S.; Hofmann, R.; Hormuth, F.; Houairi, K.; Kellner, S.; Kervella, P.; Klein, R.; Kolmeder, J.; Laun, W.; Léna, P.; Lenzen, R.; Marteaud, M.; Naranjo, V.; Neumann, U.; Paumard, T.; Rabien, S.; Ramos, J. R.; Reess, J. M.; Rohloff, R. R.; Rouan, D.; Rousset, G.; Ruyet, B.; Sevin, A.; Thiel, M.; Ziegleder, J.; Ziegler, D.
Date of Publication (YYYY-MM-DD):2009
Title of Proceedings:Science with the VLT in the ELT Era
Start Page:361
End Page:368
Title of Series:Astrophysics and Space Science Proceedings
Name of Conference/Meeting:Science with the VLT in the ELT Era
Review Status:not specified
Audience:Experts Only
Abstract / Description:We present the AO assisted, near-infrared VLTI instrument GRAVITY for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. With its two fibers per telescope beam, its internal wavefront sensors and fringe tracker, and a novel metrology concept, GRAVITY will not only push the sensitivity far beyond what is offered today, but will also advance the astrometric accuracy for UTs to 10 muas. GRAVITY is designed to work with four telescopes, thus providing phase referenced imaging and astrometry for 6 baselines simultaneously. Its unique capabilities and sensitivity will open a new window for the observation of a wide range of objects, and---amongst others---will allow the study of motions within a few times the event horizon size of the Galactic Center black hole.
Comment of the Author/Creator:Date: 2009, n/a 1, 2009
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISBN:978-1-4020-9189-6 [ID No:1]
URL:http://adsabs.harvard.edu/abs/2009svlt.conf..361E [ID No:2]
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