Related papers: The GRAVITY instrument software / High-level softw…

GRAVITY: the VLTI 4-beam combiner for narrow-angle astrometry and interferometric imaging

GRAVITY is the second generation Very Large Telescope Interferometer instrument for precision narrow-angle astrometry and interferometric imaging in the Near Infra-Red (NIR). It shall provide precision astrometry of order 10…

Instrumentation and Methods for Astrophysics · Physics 2015-03-26 N. Blind , F. Eisenhauer , S. Gillessen , Y. Kok , M. Lippa , G. Perrin , R. Dembet , P. Fedou , S. Lacour , K. Perraut , L. Jocou , L. Burtscher , O. Hans , M. Haug , F. Haussmann , S. Huber , A. Janssen , S. Kellner , T. Ott , O. Pfuhl , E. Sturm , J. Weber , E. Wieprecht , A. Amorim , W. Brandner , C. Straubmeier

GRAVITY: a four-telescope beam combiner instrument for the VLTI

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…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 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

The GRAVITY Coud\'e Infrared Adaptive Optics (CIAO) system for the VLT Interferometer

GRAVITY is a second generation instrument for the VLT Interferometer, designed to enhance the near-infrared astrometric and spectro-imaging capabilities of VLTI. Combining beams from four telescopes, GRAVITY will provide an astrometric…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Sarah Kendrew , Stefan Hippler , Wolfgang Brandner , Yann Clénet , Casey Deen , Eric Gendron , Armin Huber , Ralf Klein , Werner Laun , Rainer Lenzen , Vianak Naranjo , Udo Neumann , José Ramos , Ralf-Rainer Rohloff , Pengqian Yang , Frank Eisenhauer , Enrico Fedrigo , Marcos Suarez-Valles , Antonio Amorim , Karine Perraut , Guy Perrin , Christian Straubmeier

GRAVITY: metrology

GRAVITY is a second generation VLTI instrument, combining the light of four telescopes and two objects simultaneously. The main goal is to obtain astrometrically accurate information. Besides correctly measured stellar phases this requires…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 S. Gillessen , M. Lippa , F. Eisenhauer , O. Pfuhl , M. Haug , S. Kellner , T. Ott , E. Wieprecht , E. Sturm , F. Haussmann , C. F. Kister , D. Moch , M. Thiel

GRAVITY: The adaptive optics assisted, two object beam combiner for the VLTI

We present the adaptive optics assisted, near-infrared VLTI instrument - GRAVITY - for precision narrow-angle astrometry and interferometric phase referenced imaging of faint objects. Precision astrometry and phase-referenced…

Astrophysics · Physics 2009-11-11 S. Gillessen , G. Perrin , W. Brandner , C. Straubmeier , F. Eisenhauer , S. Rabien , A. Eckart , P. Lena , R. Genzel , T. Paumard , S. Hippler

First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer

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…

Instrumentation and Methods for Astrophysics · Physics 2017-06-21 GRAVITY Collaboration , R. Abuter , M. Accardo , A. Amorim , N. Anugu , G. Ávila , N. Azouaoui , M. Benisty , J. P. Berger , N. Blind , H. Bonnet , P. Bourget , W. Brandner , R. Brast , A. Buron , L. Burtscher , F. Cassaing , F. Chapron , É. Choquet , Y. Clénet , C. Collin , V. Coudé du Foresto , W. de Wit , P. T. de Zeeuw , C. Deen , F. Delplancke-Ströbele , R. Dembet , F. Derie , J. Dexter , G. Duvert , M. Ebert , A. Eckart , F. Eisenhauer , M. Esselborn , P. Fédou , G. Finger , P. Garcia , C. E. Garcia Dabo , R. Garcia Lopez , E. Gendron , R. Genzel , S. Gillessen , F. Gonte , P. Gordo , M. Grould , U. Grözinger , S. Guieu , P. Haguenauer , O. Hans , X. Haubois , M. Haug , F. Haussmann , Th. Henning , S. Hippler , M. Horrobin , A. Huber , Z. Hubert , N. Hubin , C. A. Hummel , G. Jakob , A. Janssen , L. Jochum , L. Jocou , A. Kaufer , S. Kellner , L. Kern , P. Kervella , M. Kiekebusch , R. Klein , Y. Kok , J. Kolb , M. Kulas , S. Lacour , V. Lapeyrère , B. Lazareff , J. -B. Le Bouquin , P. Lèna , R. Lenzen , S. Lévêque , M. Lippa , Y. Magnard , L. Mehrgan , M. Mellein , A. Mérand , J. Moreno-Ventas , T. Moulin , E. Müller , F. Müller , U. Neumann , S. Oberti , T. Ott , L. Pallanca , J. Panduro , L. Pasquini , T. Paumard , I. Percheron , K. Perraut , G. Perrin , A. Pflüger , O. Pfuhl , T. Phan Duc , P. M. Plewa , D. Popovic , S. Rabien , A. Ramírez , J. Ramos , C. Rau , M. Riquelme , R. -R. Rohloff , G. Rousset , J. Sanchez-Bermudez , S. Scheithauer , M. Schöller , N. Schuhler , J. Spyromilio , C. Straubmeier , E. Sturm , M. Suarez , K. R. W. Tristram , N. Ventura , F. Vincent , I. Waisberg , I. Wank , J. Weber , E. Wieprecht , M. Wiest , E. Wiezorrek , M. Wittkowski , J. Woillez , B. Wolff , S. Yazici , D. Ziegler , G. Zins

GRAVITY: The AO-Assisted, Two-Object Beam-Combiner Instrument

We present the proposal for the infrared adaptive optics (AO) assisted, two-object, high-throughput, multiple-beam-combiner GRAVITY for the VLTI. This instrument will be optimized for phase-referenced interferometric imaging and…

Astrophysics · Physics 2007-05-23 F. Eisenhauer , G. Perrin , S. Rabien , A. Eckart , P. Lena , R. Genzel , R. Abuter , T. Paumard , W. Brandner

The GRAVITY+ Project: Towards All-sky, Faint-Science, High-Contrast Near-Infrared Interferometry at the VLTI

The GRAVITY instrument has been revolutionary for near-infrared interferometry by pushing sensitivity and precision to previously unknown limits. With the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) in GRAVITY+,…

Instrumentation and Methods for Astrophysics · Physics 2023-07-12 GRAVITY+ Collaboration , : , Roberto Abuter , Patricio Alarcon , Fatme Allouche , Antonio Amorim , Christophe Bailet , Helen Bedigan , Anthony Berdeu , Jean-Philippe Berger , Philippe Berio , Azzurra Bigioli , Richard Blaho , Olivier Boebion , Marie-Lena Bolzer , Henri Bonnet , Guillaume Bourdarot , Pierre Bourget , Wolfgang Brandner , Cesar Cardenas , Ralf Conzelmann , Mauro Comin , Yann Clénet , Benjamin Courtney-Barrer , Yigit Dallilar , Ric Davies , Denis Defrère , Alain Delboulbé , Françoise Delplancke-Ströbele , Roderick Dembet , Tim de Zeeuw , Antonia Drescher , Andreas Eckart , Clemence Édouard , Frank Eisenhauer , Maximilian Fabricius , Helmut Feuchtgruber , Gert Finger , Natascha M. Förster Schreiber , Eloy Fuenteseca , Enrique Garcia , Paulo Garcia , Feng Gao , Eric Gendron , Reinhard Genzel , Juan Pablo Gil , Stefan Gillessen , Tiago Gomes , Frédéric Gonté , Carole Gouvret , Patricia Guajardo , Ivan Guidolin , Sylvain Guieu , Ronald Guzmann , Wolfgang Hackenberg , Nicolas Haddad , Michael Hartl , Xavier Haubois , Frank Haußmann , Gernot Heißel , Thomas Henning , Stefan Hippler , Sebastian Hönig , Matthew Horrobin , Norbert Hubin , Estelle Jacqmart , Laurent Jocou , Andreas Kaufer , Pierre Kervella , Jean-Paul Kirchbauer , Johan Kolb , Heidi Korhonen , Laura Kreidberg , Peter Krempl , Sylvestre Lacour , Stephane Lagarde , Olivier Lai , Vincent Lapeyrère , Romain Laugier , Jean-Baptiste Le Bouquin , James Leftley , Pierre Léna , Steffan Lewis , Dieter Lutz , Yves Magnard , Felix Mang , Aurelie Marcotto , Didier Maurel , Antoine Mérand , Florentin Millour , Nikhil More , Hugo Nowack , Matthias Nowak , Sylvain Oberti , Francisco Olivares , Thomas Ott , Laurent Pallanca , Thibaut Paumard , Karine Perraut , Guy Perrin , Romain Petrov , Oliver Pfuhl , Nicolas Pourré , Sebastian Rabien , Christian Rau , Miguel Riquelme , Sylvie Robbe-Dubois , Sylvain Rochat , Muhammad Salman , Malte Scherbarth , Markus Schöller , Joseph Schubert , Nicolas Schuhler , Jinyi Shangguan , Pavel Shchekaturov , Taro Shimizu , Silvia Scheithauer , Arnaud Sevin , Christian Soenke , Ferreol Soulez , Alain Spang , Eric Stadler , Christian Straubmeier , Eckhard Sturm , Calvin Sykes , Linda Tacconi , Helmut Tischer , Konrad Tristram , Frédéric Vincent , Sebastiano von Fellenberg , Sinem Uysal , Felix Widmann , Ekkehard Wieprecht , Erich Wiezorrek , Julien Woillez , Şenol Yazıcı , Gérard Zins

GRAVITY acquisition camera: characterization results

GRAVITY acquisition camera implements four optical functions to track multiple beams of Very Large Telescope Interferometer (VLTI): a) pupil tracker: a $2 \times 2$ lenslet images four pupil reference lasers mounted on the spiders of…

Instrumentation and Methods for Astrophysics · Physics 2020-12-23 Narsireddy Anugu , Paulo Garcia , Antonio Amorim , Erich Wiezorrek , Ekkehard Wieprecht , Frank Eisenhauer , Thomas Ott , Oliver Pfuhl , Paulo Gordo , Guy Perrin , Wolfgang Brandner , Christian Straubmeierfan , Karine Perraut

Improved GRAVITY astrometric accuracy from modeling of optical aberrations

The GRAVITY instrument on the ESO VLTI pioneers the field of high-precision near-infrared interferometry by providing astrometry at the $10 - 100\,\mu$as level. Measurements at such high precision crucially depend on the control of…

Astrophysics of Galaxies · Physics 2021-03-10 GRAVITY Collaboration , R. Abuter , A. Amorim , M. Bauböck , J. P. Berger , H. Bonnet , W. Brandner , Y. Clénet , R. Davies , P. T. de Zeeuw , J. Dexter , Y. Dallilar , A. Drescher , A. Eckart , F. Eisenhauer , N. M. Förster Schreiber , P. Garcia , F. Gao , E. Gendron , R. Genzel , S. Gillessen , M. Habibi , X. Haubois , G. Heißel , T. Henning , S. Hippler , M. Horrobin , A. Jiménez-Rosales , L. Jochum , L. Jocou , A. Kaufer , P. Kervella , S. Lacour , V. Lapeyrère , J. -B. Le Bouquin , P. Léna , D. Lutz , M. Nowak , T. Ott , T. Paumard , K. Perraut , G. Perrin , O. Pfuhl , S. Rabien , G. Rodríguez-Coira , J. Shangguan , T. Shimizu , S. Scheithauer , J. Stadler , O. Straub , C. Straubmeier , E. Sturm , L. J. Tacconi , F. Vincent , S. von Fellenberg , I. Waisberg , F. Widmann , E. Wieprecht , E. Wiezorrek , J. Woillez , S. Yazici , A. Young , G. Zinsınst{9}

The GRAVITY metrology system: modeling a metrology in optical fibers

GRAVITY is the second generation VLT Interferometer (VLTI) instrument for high-precision narrow-angle astrometry and phase-referenced interferometric imaging. The laser metrology system of GRAVITY is at the heart of its astrometric mode,…

Instrumentation and Methods for Astrophysics · Physics 2014-08-07 N. Blind , H. Huber , F. Eisenhauer , J. Weber , S. Gillessen , M. Lippa , L. Burtscher , O. Hans , M. Haug , F. Haussmann , S. Huber , A. Janssen , S. Kellner , Y. Kok , T. Ott , O. Pfuhl , E. Sturm , E. Wieprecht , A. Amorim , W. Brandner , G. Perrin , K. Perraut , C. Straubmeier

First Light for GRAVITY Wide: Large Separation Fringe Tracking for the Very Large Telescope Interferometer

GRAVITY+ is the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) with wide-separation fringe tracking, new adaptive optics, and laser guide stars on all four 8~m Unit Telescopes (UTs), for ever fainter, all-sky, high…

Instrumentation and Methods for Astrophysics · Physics 2022-09-14 GRAVITY+ Collaboration , : , R. Abuter , F. Allouche , A. Amorim , C. Bailet , M. Bauböck , J. -P. Berger , P. Berio , A. Bigioli , O. Boebion , M. L. Bolzer , H. Bonnet , G. Bourdarot , P. Bourget , W. Brandner , Y. Clénet , B. Courtney-Barrer , Y. Dallilar , R. Davies , D. Defrère , A. Delboulbé , F. Delplancke , R. Dembet , P. T. de Zeeuw , A. Drescher , A. Eckart , C. Édouard , F. Eisenhauer , M. Fabricius , H. Feuchtgruber , G. Finger , N. M. Förster Schreiber , E. Garcia , P. Garcia , F. Gao , E. Gendron , R. Genzel , J. P. Gil , S. Gillessen , T. Gomes , F. Gonté , C. Gouvret , P. Guajardo , S. Guieu , M. Hartl , X. Haubois , F. Haußmann , G. Heißel , Th. Henning , S. Hippler , S. Hönig , M. Horrobin , N. Hubin , E. Jacqmart , L. Jochum , L. Jocou , A. Kaufer , P. Kervella , H. Korhonen , L. Kreidberg , S. Lacour , S. Lagarde , O. Lai , V. Lapeyrère , R. Laugier , J. -B. Le Bouquin , J. Leftley , P. Léna , D. Lutz , F. Mang , A. Marcotto , D. Maurel , A. Mérand , F. Millour , N. More , H. Nowacki , M. Nowak , S. Oberti , T. Ott , L. Pallanca , T. Paumard , K. Perraut , G. Perrin , R. Petrov , O. Pfuhl , N. Pourré , S. Rabien , C. Rau , S. Robbe-Dubois , S. Rochat , M. Salman , M. Schöller , J. Schubert , N. Schuhler , J. Shangguan , T. Shimizu , S. Scheithauer , A. Sevin , F. Soulez , A. Spang , E. Stadler , J. Stadler , C. Straubmeier , E. Sturm , L. J. Tacconi , K. R. W. Tristram , F. Vincent , S. von Fellenberg , S. Uysal , F. Widmann , E. Wieprecht , E. Wiezorrek , J. Woillez , S. Yazici , A. Young , G. Zins

The GRAVITY metrology system: narrow-angle astrometry via phase-shifting interferometry

The VLTI instrument GRAVITY will provide very powerful astrometry by combining the light from four telescopes for two objects simultaneously. It will measure the angular separation between the two astronomical objects to a precision of 10…

Instrumentation and Methods for Astrophysics · Physics 2015-01-21 M. Lippa , N. Blind , S. Gillessen , Y. Kok , J. Weber , F. Eisenhauer , O. Pfuhl , A. Janssen , M. Haug , F. Haußmann , S. Kellner , O. Hans , E. Wieprecht , T. Ott , L. Burtscher , R. Genzel , E. Sturm , R. Hofmann , S. Huber , D. Huber , S. Senftleben , A. Pflüger , R. Greßmann , G. Perrin , K. Perraut , W. Brandner , C. Straubmeier , A. Amorim , M. Schöller

GRAVITY: beam stabilization and light injection subsystems

We present design results of the 2nd generation VLTI instrument GRAVITY beam stabilization and light injection subsystems. Designed to deliver micro-arcsecond astrometry, GRAVITY requires an unprecedented stability of the VLTI optical…

Instrumentation and Methods for Astrophysics · Physics 2012-12-21 O. Pfuhl , M. Haug , F. Eisenhauer , D. Penka , A. Amorim , S. Kellner , S. Gillessen , T. Ott , E. Wieprecht , E. Sturm , F. Haussmann , M. Lippa

The metrology system of the VLTI instrument GRAVITY

The VLTI instrument GRAVITY combines the beams from four telescopes and provides phase-referenced imaging as well as precision-astrometry of order 10 microarcseconds by observing two celestial objects in dual-field mode. Their angular…

Instrumentation and Methods for Astrophysics · Physics 2016-08-18 Magdalena Lippa , Stefan Gillessen , Nicolas Blind , Yipting Kok , Senol Yazici , Johannes Weber , Oliver Pfuhl , Marcus Haug , Stefan Kellner , Ekkehard Wieprecht , Frank Eisenhauer , Reinhard Genzel , Oliver Hans , Frank Haussmann , David Huber , Tobias Kratschmann , Thomas Ott , Markus Plattner , Christian Rau , Eckhard Sturm , Idel Waisberg , Erich Wiezorrek , Guy Perrin , Karine Perraut , Wolfgang Brandner , Christian Straubmeier , Antonio Amorim

The interferometric baselines and GRAVITY astrometric error budget

GRAVITY is a new generation beam combination instrument for the VLTI. Its goal is to achieve microarsecond astrometric accuracy between objects separated by a few arcsec. This $10^6$ accuracy on astrometric measurements is the most…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 S. Lacour , F. Eisenhauer , S. Gillessen , O. Pfuhl , Y. Kok , G. Perrin , K. Rousselet-Perraut , C. Straubmeier , W. Brandner , A. Amorim , J. Woillez , H. Bonnet

GRAVITY: getting to the event horizon of Sgr A*

We present the second-generation VLTI instrument GRAVITY, which currently is in the preliminary design phase. GRAVITY is specifically designed to observe highly relativistic motions of matter close to the event horizon of Sgr A*, the…

Astrophysics · Physics 2009-11-13 F. Eisenhauer , G. Perrin , W. Brandner , C. Straubmeier , A. Richichi , S. Gillessen , J. P. Berger , S. Hippler , A. Eckart , M. Schoeller , S. Rabien , F. Cassaing , R. Lenzen , M. Thiel , Y. Clenet , J. R. Ramos , S. Kellner , P. Fedou , H. Baumeister , R. Hofmann , E. Gendron , A. Boehm , H. Bartko , X. Haubois , R. Klein , K. Dodds-Eden , K. Houairi , F. Hormuth , A. Graeter , L. Jocou , V. Naranjo , R. Genzel , P. Kervella , T. Henning , N. Hamaus , S. Lacour , U. Neumann , M. Haug , F. Malbet , W. Laun , J. Kolmeder , T. Paumard , R. -R. Rohloff , O. Pfuhl , K. Perraut , J. Ziegleder , D. Rouan , G. Rousset

GRAVITY for MATISSE -- Improving the MATISSE performance with the GRAVITY fringe tracker

Context: MATISSE, the mid-infrared spectro-imaging instrument of VLTI, was designed to deliver its advertised performance when paired with an external second generation fringe tracker. Science observation started in 2019, demonstrating…

Instrumentation and Methods for Astrophysics · Physics 2024-08-21 J. Woillez , R. Petrov , R. Abuter , F. Allouche , P. Berio , R. Dembet , F. Eisenhauer , R. Frahm , F. Gonté , X. Haubois , M. Houllé , W. Jaffe , S. Lacour , S. Lagarde , J. Leftley , B. Lopez , A. Matter , A. Meilland , F. Millour , M. Nowak , C. Paladini , T. Rivinius , D. Salabert , N. Schuhler , J. Varga , G. Zins

The GRAVITY fringe tracker

The GRAVITY instrument has been commissioned on the VLTI during 2016 and is now available to the astronomical community. It is the first optical interferometer capable of observing sources as faint as magnitude 19 in K-band. This is…

Instrumentation and Methods for Astrophysics · Physics 2023-10-24 S. Lacour , R. Dembet , R. Abuter , P. Fedou , G. Perrin , E. Choquet , O. Pfuhl , F. Eisenhauer , J. Woillez , F. Cassaing , E. Wieprecht , T. Ott , E. Wiezorrek , B. Wolff , A. Ramirez , X. Haubois , K. Perraut , C. Straubmeier , W. Brandner , A. Amorim

The Fringe Detection Laser Metrology for the GRAVITY Interferometer at the VLTI

Interferometric measurements of optical path length differences of stars over large baselines can deliver extremely accurate astrometric data. The interferometer GRAVITY will simultaneously measure two objects in the field of view of the…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 H. Bartko , S. Gillessen , S. Rabien , M. Thiel , A. Gräter , M. Haug , S. Kellner , F. Eisenhauer , S. Lacour , C. Straubmeier , J. -P. Berger , L. Jocou , W. Chibani , S. Lüst , D. Moch , O. Pfuhl , W. Fabian , C. Araujo-Hauck , K. Perraut , W. Brandner , G. Perrin , A. Amorim