Related papers: Status and new operation modes of the versatile VL…

Multi-Conjugate Adaptive Optics with Laser Guide Stars

The Laser Guide Star Facility for the VLT will be commissioned during 2003. This, of course, can only be the first step towards enhancing the scientific output of the VLT through adaptive optics. So in this contribution we propose the…

Astrophysics · Physics 2009-11-07 R. I. Davies , D. Bonaccini , S. Rabien , W. Hackenberg , T. Ott , S. Hippler , U. Neumann , M. Barden , M. Lehnert , F. Eisenhauer , R. Genzel

A versatile variable field module for field and angular dependent scanning probe microscopy measurements

We demonstrate a versatile variable field module (VFM) with capability of both field and angular dependent measurements up to 1800 Oe for scanning probe system. The magnetic field strength is changed by adjusting the distance between a rare…

Instrumentation and Detectors · Physics 2013-01-23 Hongxue Liu , Ryan Comes , Jiwei Lu , Stuart Wolf , Jim Hodgson , Maarten Rutgers

The Enhanced Resolution Imager and Spectrograph for the VLT

ERIS, the Enhanced Resolution Imager and Spectrograph, is an instrument that both extends and enhances the fundamental diffraction limited imaging and spectroscopy capability for the VLT. It replaces two instruments that were being…

Instrumentation and Methods for Astrophysics · Physics 2023-07-05 R. Davies , O. Absil , G. Agapito , A. Agudo Berbel , A. Baruffolo , V. Biliotti , M. Bonaglia , M. Bonse , R. Briguglio , P. Campana , Y. Cao , L. Carbonaro , A. Cortes , G. Cresci , Y. Dallilar , F. Dannert , R. J. De Rosa , M. Deysenroth , I. Di Antonio , A. Di Cianno , G. Di Rico , D. Doelman , M. Dolci , R. Dorn , F. Eisenhauer , S. Esposito , D. Fantinel , D. Ferruzzi , H. Feuchtgruber , G. Finger , N. M. Förster Schreiber , X. Gao , H. Gemperlein , R. Genzel , S. Gillessen , C. Ginski , A. M. Glauser , A. Glindemann , P. Grani , M. Hartl , J. Hayoz , M. Heida , D. Henry , R. Hofmann , H. Huber , M. Kasper , C. Keller , M. Kenworthy , K. Kravchenko , H. Kuntschner , S. Lacour , J. Lightfoot , D. Lunney , D. Lutz , M. Macintosh , F. Mannucci , M. Marsset , A. Modigliani , M. Neeser , G. Orban de Xivry , T. Ott , L. Pallanca , P. Patapis , D. Pearson , E. Peña , I. Percheron , A. Puglisi , S. P. Quanz , S. Rabien , C. Rau , A. Riccardi , B. Salasnich , H. -M. Schmid , J. Schubert , B. Serra , T. Shimizu , F. Snik , E. Sturm , L. Tacconi , W. Taylor , A. Valentini , C. Waring , E. Wiezorrek , M. Xompero

MICADO: The Multi-Adaptive Optics Camera for Deep Observations

The Multi-adaptive optics Imaging CamerA for Deep Observations (MICADO) will image a field of view of nearly 1 arcminute at the diffraction limit of the Extremely Large Telescope (ELT), making use of the adaptive optics correction provided…

Instrumentation and Methods for Astrophysics · Physics 2021-03-23 Richard Davies , Veronika Hoermann , Sebastian Rabien , Eckhard Sturm , Joao Alves , Yann Clenet , Jari Kotilainen , Florian Lang-Bardl , Harald Nicklas , Joerg-Uwe Pott , Eline Tolstoy , MICADO Consortium

The Bi-O-edge wavefront sensor: How Foucault-knife-edge variants can boost eXtreme Adaptive Optics

Direct detection of exoplanets around nearby stars requires advanced Adaptive Optics (AO) systems. High order systems are needed to reach high Strehl Ratio (SR) in near infrared and optical wavelengths on future Giant Segmented Mirror…

Instrumentation and Methods for Astrophysics · Physics 2024-01-31 C. Vérinaud , C. T. Heritier , M. Kasper , M. Tallon

The Critical, Strategic Importance of Adaptive Optics-Assisted Ground-Based Telescopes for the Success of Future NASA Exoplanet Direct Imaging Missions

Ground-based telescopes coupled with adaptive optics (AO) have been playing a leading role in exoplanet direct imaging science and technological development for the past two decades and will continue to have an indispensable role for the…

Earth and Planetary Astrophysics · Physics 2019-03-14 Thayne Currie , Ruslan Belikov , Olivier Guyon , N. Jeremy Kasdin , Christian Marois , Mark S. Marley , Kerri Cahoy , Dimitri Mawet , Michael McElwain , Eduardo Bendek , Marc J. Kuchner , Michael R. Meyer , S. Mark Ammons , Julien Girard , Yasuhiro Hasegawa , Mercedes Lopez-Morales , Wladimir Lyra , Ben Mazin , Bertrand Mennesson , Chris Packham , Tyler Robinson

Potential Science for the OASIS Integral Field Spectrograph with Laser Guide Star Adaptive Optics

We review the science case for the Laser Guide Star system being built for the William Herschel Telescope (WHT) on La Palma. When used in combination with the NAOMI Adaptive Optics system and the OASIS visible-wavelength Integral Field…

Astrophysics · Physics 2009-11-13 S. L. Morris , J. Gerssen , M. Swinbank , R. Wilman

Key wavefront sensors features for laser-assisted tomographic adaptive optics systems on the Extremely Large Telescope

Laser guide star (LGS) wave-front sensing (LGSWFS) is a key element of tomographic adaptive optics system. However, when considering Extremely Large Telescope (ELT) scales, the LGS spot elongation becomes so large that it challenges the…

Instrumentation and Methods for Astrophysics · Physics 2022-06-24 Thierry Fusco , Guido Agapito , Benoit Neichel , Sylvain Oberti , Carlos Correia , Pierre Haguenauer , Cédric Plantet , Felipe Pedreros , Zibo Ke , Anne Costille , Pierre Jouve , Lorenzo Busoni , Simone Esposito

The VLA Low Band Ionospheric and Transient Experiment (VLITE): A Commensal Sky Survey

The US Naval Research Laboratory (NRL) and the National Radio Astronomy Observatory (NRAO) have collaborated to develop, install, and commission a new commensal system on the Karl G. Jansky Very Large Array (VLA). The VLA Low Band…

Instrumentation and Methods for Astrophysics · Physics 2016-03-11 Tracy Clarke , Namir Kassim , Emil Polisensky , Wendy Peters , Simona Giacintucci , Scott D. Hyman

The Large Observatory For x-ray Timing

The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and participated in the final down-selection for a launch slot in 2022-2024. Thanks to the unprecedented combination of effective area and…

Instrumentation and Methods for Astrophysics · Physics 2014-09-01 M. Feroci , J. W. den Herder , E. Bozzo , D. Barret , S. Brandt , M. Hernanz , M. van der Klis , M. Pohl , A. Santangelo , L. Stella , A. Watts , J. Wilms , S. Zane , M. Ahangarianabhari , C. Albertus , M. Alford , A. Alpar , D. Altamirano , L. Alvarez , L. Amati , C. Amoros , N. Andersson , A. Antonelli , A. Argan , R. Artigue , B. Artigues , J. -L. Atteia , P. Azzarello , P. Bakala , G. Baldazzi , S. Balman , M. Barbera , C. van Baren , S. Bhattacharyya , A. Baykal , T. Belloni , F. Bernardini , G. Bertuccio , S. Bianchi , A. Bianchini , P. Binko , P. Blay , F. Bocchino , P. Bodin , I. Bombaci , J. -M. Bonnet Bidaud , S. Boutloukos , L. Bradley , J. Braga , E. Brown , N. Bucciantini , L. Burderi , M. Burgay , M. Bursa , C. Budtz-Jørgensen , E. Cackett , F. R. Cadoux , P. Cais , G. A. Caliandro , R. Campana , S. Campana , F. Capitanio , J. Casares , P. Casella , A. J. Castro-Tirado , E. Cavazzuti , P. Cerda-Duran , D. Chakrabarty , F. Château , J. Chenevez , J. Coker , R. Cole , A. Collura , R. Cornelisse , T. Courvoisier , A. Cros , A. Cumming , G. Cusumano , A. D'Aì , V. D'Elia , E. Del Monte , A. De Luca , D. De Martino , J. P. C. Dercksen , M. De Pasquale , A. De Rosa , M. Del Santo , S. Di Cosimo , S. Diebold , T. Di Salvo , I. Donnarumma , A. Drago , M. Durant , D. Emmanoulopoulos , M. H. Erkut , P. Esposito , Y. Evangelista , A. Fabian , M. Falanga , Y. Favre , C. Feldman , V. Ferrari , C. Ferrigno , M. Finger , M. H. Finger , G. W. Fraser , M. Frericks , F. Fuschino , M. Gabler , D. K. Galloway , J. L. Galvez Sanchez , E. Garcia-Berro , B. Gendre , S. Gezari , A. B. Giles , M. Gilfanov , P. Giommi , G. Giovannini , M. Giroletti , E. Gogus , A. Goldwurm , K. Goluchová , D. Götz , C. Gouiffes , M. Grassi , P. Groot , M. Gschwender , L. Gualtieri , C. Guidorzi , L. Guy , D. Haas , P. Haensel , M. Hailey , F. Hansen , D. H. Hartmann , C. A. Haswell , K. Hebeler , A. Heger , W. Hermsen , J. Homan , A. Hornstrup , R. Hudec , J. Huovelin , A. Ingram , J. J. M. in't Zand , G. Israel , K. Iwasawa , L. Izzo , H. M. Jacobs , F. Jetter , T. Johannsen , H. M. Jacobs , P. Jonker , J. Josè , P. Kaaret , G. Kanbach , V. Karas , D. Karelin , D. Kataria , L. Keek , T. Kennedy , D. Klochkov , W. Kluzniak , K. Kokkotas , S. Korpela , C. Kouveliotou , I. Kreykenbohm , L. M. Kuiper , I. Kuvvetli , C. Labanti , D. Lai , F. K. Lamb , P. P. Laubert , F. Lebrun , D. Lin , D. Linder , G. Lodato , F. Longo , N. Lund , T. J. Maccarone , D. Macera , S. Maestre , S. Mahmoodifar , D. Maier , P. Malcovati , I. Mandel , V. Mangano , A. Manousakis , M. Marisaldi , A. Markowitz , A. Martindale , G. Matt , I. M. McHardy , A. Melatos , M. Mendez , S. Mereghetti , M. Michalska , S. Migliari , R. Mignani , M. C. Miller , J. M. Miller , T. Mineo , G. Miniutti , S. Morsink , C. Motch , S. Motta , M. Mouchet , G. Mouret , J. Mulačová , F. Muleri , T. Muñoz-Darias , I. Negueruela , J. Neilsen , A. J. Norton , M. Nowak , P. O'Brien , P. E. H. Olsen , M. Orienti , M. Orio , M. Orlandini , P. Orleanski , J. P. Osborne , R. Osten , F. Ozel , L. Pacciani , M. Paolillo , A. Papitto , J. M. Paredes , A. Patruno , B. Paul , E. Perinati , A. Pellizzoni , A. V. Penacchioni , M. A. Perez , V. Petracek , C. Pittori , J. Pons , J. Portell , A. Possenti , J. Poutanen , M. Prakash , P. Le Provost , D. Psaltis , D. Rambaud , P. Ramon , G. Ramsay , M. Rapisarda , A. Rachevski , I. Rashevskaya , P. S. Ray , N. Rea , S. Reddy , P. Reig , M. Reina Aranda , R. Remillard , C. Reynolds , L. Rezzolla , M. Ribo , R. de la Rie , A. Riggio , A. Rios , P. Rodríguez- Gil , J. Rodriguez , R. Rohlfs , P. Romano , E. M. R. Rossi , A. Rozanska , A. Rousseau , F. Ryde , L. Sabau-Graziati , G. Sala , R. Salvaterra , A. Sanna , J. Sandberg , S. Scaringi , S. Schanne , J. Schee , C. Schmid , S. Shore , R. Schneider , A. Schwenk , A. D. Schwope , J. -Y. Seyler , A. Shearer , A. Smith , D. M. Smith , P. J. Smith , V. Sochora , P. Soffitta , P. Soleri , A. Spencer , B. Stappers , A. W. Steiner , N. Stergioulas , G. Stratta , T. E. Strohmayer , Z. Stuchlik , S. Suchy , V. Sulemainov , T. Takahashi , F. Tamburini , T. Tauris , C. Tenzer , L. Tolos , F. Tombesi , J. Tomsick , G. Torok , J. M. Torrejon , D. F. Torres , A. Tramacere , A. Trois , R. Turolla , S. Turriziani , P. Uter , P. Uttley , A. Vacchi , P. Varniere , S. Vaughan , S. Vercellone , V. Vrba , D. Walton , S. Watanabe , R. Wawrzaszek , N. Webb , N. Weinberg , H. Wende , P. Wheatley , R. Wijers , R. Wijnands , M. Wille , C. A. Wilson-Hodge , B. Winter , K. Wood , G. Zampa , N. Zampa , L. Zampieri , L. Zdunik , A. Zdziarski , B. Zhang , F. Zwart , M. Ayre , T. Boenke , C. Corral van Damme , E. Kuulkers , D. Lumb

SPHERE+: Imaging young Jupiters down to the snowline

SPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a variety of operating modes, primarily in the field of direct…

Earth and Planetary Astrophysics · Physics 2020-03-16 A. Boccaletti , G. Chauvin , D. Mouillet , O. Absil , F. Allard , S. Antoniucci , J. -C. Augereau , P. Barge , A. Baruffolo , J. -L. Baudino , P. Baudoz , M. Beaulieu , M. Benisty , J. -L. Beuzit , A. Bianco , B. Biller , B. Bonavita , M. Bonnefoy , S. Bos , J. -C. Bouret , W. Brandner , N. Buchschache , B. Carry , F. Cantalloube , E. Cascone , A. Carlotti , B. Charnay , A. Chiavassa , E. Choquet , Y. Clenet , A. Crida , J. De Boer , V. De Caprio , S. Desidera , J. -M. Desert , J. -B. Delisle , P. Delorme , K. Dohlen , D. Doelman , C. Dominik , V. D Orazi , C. Dougados , S. Doute , D. Fedele , M. Feldt , F. Ferreira , C. Fontanive , T. Fusco , R. Galicher , A. Garufi , E. Gendron , A. Ghedina , C. Ginski , J. -F. Gonzalez , D. Gratadour , R. Gratton , T. Guillot , S. Haffert , J. Hagelberg , T. Henning , E. Huby , M. Janson , I. Kamp , C. Keller , M. Kenworthy , P. Kervella , Q. Kral , J. Kuhn , E. Lagadec , G. Laibe , M. Langlois , A. -M. Lagrange , R. Launhardt , L. Leboulleux , H. Le Coroller , G. Li Causi , M. Loupias , A. L. Maire , G. Marleau , F. Martinache , P. Martinez , D. Mary , M. Mattioli , J. Mazoyer , H. Meheut , F. Menard , D. Mesa , N. Meunier , Y. Miguel , J. Milli , M. Min , P. Molliere , C. Mordasini , G. Moretto , L. Mugnier , G. Muro Arena , N. Nardetto , M. N Diaye , N. Nesvadba , F. Pedichini , P. Pinilla , E. Por , A. Potier , S. Quanz , J. Rameau , R. Roelfsema , D. Rouan , E. Rigliaco , B. Salasnich , M. Samland , J. -F. Sauvage , H. -M. Schmid , D. Segransan , I. Snellen , F. Snik , F. Soulez , E. Stadler , D. Stam , M. Tallon , P. Thebault , E. Thiebaut , C. Tschudi , S. Udry , R. van Holstein , P. Vernazza , F. Vidal , A. Vigan , R. Waters , F. Wildi , M. Willson , A. Zanutta , A. Zavagno , A. Zurlo

L'-band AGPM vector vortex coronagraph's first light on VLT/NACO: Discovery of a late-type companion at two beamwidths from an F0V star

Context. High contrast imaging has thoroughly combed through the limited search space accessible with first-generation ground-based adaptive optics instruments and the Hubble Space Telescope. Only a few objects were discovered, and many…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 D. Mawet , O. Absil , C. Delacroix , J. H. Girard , J. Milli , J. O'Neil , P. Baudoz , A. Boccaletti , P. Bourget , V. Christiaens , P. Forsberg , F. Gonte , S. Habraken , C. Hanot , M. Karlsson , M. Kasper , J. -L. Lizon , K. Muzic , E. Pena , R. Olivier , N. Slusarenko , L. E. Tacconi-Garman , J. Surdej

Optimization of Liquid Lens-based Imaging Receiver for MIMO VLC Systems

In this paper, a liquid lens-based imaging receiver is proposed for multiple-input multiple-output (MIMO) visible light communication (VLC) systems. By dynamically adjusting the focal length and orientation angles of the liquid lens, the…

Signal Processing · Electrical Eng. & Systems 2025-08-08 Kapila W. S. Palitharathna , Christodoulos Skouroumounis , Ioannis Krikidis

Data-driven subspace predictive control of adaptive optics for high-contrast imaging

The search for exoplanets is pushing adaptive optics systems on ground-based telescopes to their limits. One of the major limitations at small angular separations, exactly where exoplanets are predicted to be, is the servo-lag of the…

Instrumentation and Methods for Astrophysics · Physics 2021-03-16 Sebastiaan Y. Haffert , Jared R. Males , Laird M. Close , Kyle Van Gorkom , Joseph D. Long , Alexander D. Hedglen , Olivier Guyon , Lauren Schatz , Maggie Kautz , Jennifer Lumbres , Alex Rodack , Justin M. Knight , He Sun , Kevin Fogarty

Integrated turbulence parameters' estimation from NAOMI adaptive optics telemetry data

Monitoring turbulence parameters is crucial in high-angular resolution astronomy for various purposes, such as optimising adaptive optics systems or fringe trackers. The former are present at most modern observatories and will remain…

Instrumentation and Methods for Astrophysics · Physics 2023-10-25 Nuno Morujão , Carlos Correia , Paulo Andrade , Julien Woillez , Paulo Garcia

A matter of perspective: how nanoscale optical defects limit cosmic-scale gravitational wave observations

Ground-based gravitational-wave (GW) detectors, such as LIGO, Virgo, and KAGRA, have revolutionised as- tronomy. Now, future detectors like the Einstein Telescope and Cosmic Explorer aim to achieve even greater sensitivity. Advanced optical…

Optics · Physics 2025-09-04 Anna C. Green , Antonella Bianchi , Daniel D. Brown , Felice Feldmann , Jeremie Gobeil , Miron van der Kolk , Riccardo Maggiore , Jonathan W. Perry , Emma Prins , Mischa Salle , Alina Soflau , Enzo Tapia , Andreas Freise

Flexible focal plane arrays for UVOIR wide field instrumentation

LAM and CEA-LETI are developing the technology of deformable detectors, for UV, VIS or NIR applications. Such breakthrough devices will be a revolution for future wide field imagers and spectrographs, firstly by improving the image quality…

Instrumentation and Methods for Astrophysics · Physics 2016-12-21 Emmanuel Hugot , Wilfried Jahn , Bertrand Chambion , Gaid Moulin , Liubov Nikitushkina , Christophe Gaschet , David Henry , Stéphane Getin , Marc Ferrari , Yann Gaeremynck

Performance of the VLT Planet Finder SPHERE I. Photometry and astrometry precision with IRDIS and IFS in laboratory

The new planet finder for the Very Large Telescope (VLT), the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE), just had its first light in Paranal. A dedicated instrument for the direct detection of planets, SPHERE, is…

Earth and Planetary Astrophysics · Physics 2014-12-03 A. Zurlo , A. Vigan , D. Mesa , R. Gratton , C. Moutou , M. Langlois , R. U. Claudi , L. Pueyo , A. Boccaletti , A. Baruffolo , J. -L. Beuzit , A. Costille , S. Desidera , K. Dohlen , M. Feldt , T. Fusco , T. Henning , M. Kasper , P. Martinez , O. Moeller-Nilsson , D. Mouillet , A. Pavlov , P. Puget , J. -F. Sauvage , M. Turatto , S. Udry , F. Vakili , R. Waters , R. F. Wildi

High angular resolution coronography for adaptive optics

Recent adaptive optics systems in astronomy achieve high-angular resolution. With the extreme stability of the images, detection at very low fluxes can be reached using a coronograph at the diffraction limit of the telescopes. This paper is…

Astrophysics · Physics 2007-05-23 Fabien Malbet

Curvature Wavefront Sensing for the Large Synoptic Survey Telescope

The Large Synoptic Survey Telescope (LSST) will use an active optics system (AOS) to maintain alignment and surface figure on its three large mirrors. Corrective actions fed to the LSST AOS are determined from information derived from 4…

Instrumentation and Methods for Astrophysics · Physics 2015-10-26 Bo Xin , Chuck Claver , Ming Liang , Srinivasan Chandrasekharan , George Angeli , Ian Shipsey