Related papers: Augmentation of VERITAS Telescopes for Stellar Int…

Upgrade and Characterization of the SPIFFI/SINFONI optics

The SPIFFI integral field spectrometer is operated as a subunit of the AO instrument SINFONI on the VLT. It will be upgraded and reused as SPIFFIER in the new VLT instrument ERIS. In January 2016 an early upgrade of several optical…

Instrumentation and Methods for Astrophysics · Physics 2016-12-15 Dominik Gräff

Optical intensity interferometry lab tests in preparation of stellar diameter measurements at IACTs at GHz photon rates

Astronomical intensity interferometry enables quantitative measurements of the source geometry by measuring the photon fluxes in individual telescopes and correlating them, rather than correlating the electromagnetic waves' amplitudes. This…

Instrumentation and Methods for Astrophysics · Physics 2023-06-16 Andreas Zmija , Naomi Vogel , Gisela Anton , Dmitry Malyshev , Thilo Michel , Adrian Zink , Stefan Funk

Target of opportunity observations of flaring blazars with VERITAS

VERITAS is an array of four imaging atmospheric Cherenkov telescopes that observes gamma-ray sources in the very high energy range (VHE, E>100 GeV). A large fraction of the known gamma-ray sources are of extragalactic origin and belong to…

High Energy Astrophysical Phenomena · Physics 2019-08-13 M. Errando

The Visible and Infrared Survey Telescope for Astronomy (VISTA): Design, Technical Overview and Performance

The Visible and Infrared Survey Telescope for Astronomy (VISTA) is the 4-metre wide-field survey telescope at ESO's Paranal Observatory, equipped with the world's largest near-infrared imaging camera (VISTA IR Camera, VIRCAM), with 1.65…

Instrumentation and Methods for Astrophysics · Physics 2015-03-13 Will Sutherland , Jim Emerson , Gavin Dalton , Eli Atad-Ettedgui , Steven Beard , Richard Bennett , Naidu Bezawada , Andrew Born , Martin Caldwell , Paul Clark , Simon Craig , David Henry , Paul Jeffers , Bryan Little , Alistair McPherson , John Murray , Malcolm Stewart , Brian Stobie , David Terrett , Kim Ward , Martin Whalley , Guy Woodhouse

ERIS: revitalising an adaptive optics instrument for the VLT

ERIS is an instrument that will both extend and enhance the fundamental diffraction limited imaging and spectroscopy capability for the VLT. It will replace two instruments that are now being maintained beyond their operational lifetimes,…

Instrumentation and Methods for Astrophysics · Physics 2018-07-16 Richard Davies , Simone Esposito , Hans Martin Schmid , William Taylor , Guido Agapito , Alexander Agudo Berbel , Andrea Baruffolo , Valdemaro Biliotti , Beth Biller , Martin Black , Anna Boehle , Runa Briguglio , Alexander Buron , Luca Carbonaro , Angela Cortes , Giovanni Cresci , Matthias Deysenroth , Amico Di Cianno , Gianluca Di Rico , David Doelman , Mauro Dolci , Reinhold Dorn , Frank Eisenhauer , Daniela Fantinel , Debora Ferruzzi , Helmut Feuchtgruber , Natascha Förster Schreiber , Xiaofeng Gao , Hans Gemperlein , Reinhard Genzel , Elizabeth George , Stefan Gillessen , Christophe Giordano , Adrian Glauser , Andreas Glindemann , Paolo Grani , Michael Hartl , Jeroen Heijmans , David Henry , Heinrich Huber , Markus Kasper , Christoph Keller , Matthew Kenworthy , Jonas Kuehn , Harald Kuntschner , John Lightfood , David Lunney , Mike MacIntosh , Filippo Mannucci , Stephen March , Mark Neeser , Polychronis Patapis , David Pearson , Markus Plattner , Alfio Puglisi , Sascha Quanz , Christian Rau , Armando Riccardi , Bernardo Salasnich , Josef Schubert , Frans Snik , Eckhard Sturm , Angelo Valentini , Christopher Waring , Erich Wiezorrek , Marco Xompero

The GRAVITY instrument software / High-level software

GRAVITY is the four-beam, near- infrared, AO-assisted, fringe tracking, astrometric and imaging instrument for the Very Large Telescope Interferometer (VLTI). It is requiring the development of one of the most complex instrument software…

Instrumentation and Methods for Astrophysics · Physics 2015-01-26 Leonard Burtscher , Ekkehard Wieprecht , Thomas Ott , Yitping Kok , Senol Yazici , Narsireddy Anugu , Roderick Dembet , Pierre Fedou , Sylvestre Lacour , Juergen Ott , Thibaut Paumard , Vincent Lapeyrere , Pierre Kervella , Roberto Abuter , Eszter Pozna , Frank Eisenhauer , Nicolas Blind , Reinhard Genzel , Stefan Gillessen , Oliver Hans , Marcus Haug , Frank Haussmann , Stefan Kellner , Magdalena Lippa , Oliver Pfuhl , Eckhard Sturm , Johannes Weber , Antonio Amorim , Wolfgang Brandner , Karine Rousselet-Perraut , Guy S. Perrin , Christian Straubmeier , Markus Schoeller

Mathematical derivation and verification of the amplitude of LISA's interferometric signals on an ultra-stable interferometer testbed

The Laser Interferometer Space Antenna (LISA) mission aims to detect gravitational waves by interferometrically measuring the change of separation between free-falling test masses (TMs). LISA's interferometers must deliver pm/rtHz…

Instrumentation and Methods for Astrophysics · Physics 2026-02-23 Alvise Pizzella , Lennart Wissel , Miguel Dovale-Alvarez , Pablo Martinez Cano , Rodrigo Garcia Alvarez , Christoph Bode , Juan Jose Esteban Delgado , Gerhard Heinzel

A search for line intensity enhancements in the far-UV spectra of active late-type stars arising from opacity

Radiative transfer calculations have predicted intensity enhancements for optically thick emission lines, as opposed to the normal intensity reductions, for astrophysical plasmas under certain conditions. In particular, the results are…

Solar and Stellar Astrophysics · Physics 2015-05-30 F. P. Keenan , D. J. Christian , S. J. Rose , M. Mathioudakis

The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope

We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large Aperture Telescope (LAT) are expected to be complete by 2028,…

Instrumentation and Methods for Astrophysics · Physics 2025-08-11 The Simons Observatory Collaboration , M. Abitbol , I. Abril-Cabezas , S. Adachi , P. Ade , A. E. Adler , P. Agrawal , J. Aguirre , Z. Ahmed , S. Aiola , T. Alford , A. Ali , D. Alonso , M. A. Alvarez , R. An , K. Arnold , P. Ashton , Z. Atkins , J. Austermann , S. Azzoni , C. Baccigalupi , A. Baleato Lizancos , D. Barron , P. Barry , J. Bartlett , N. Battaglia , R. Battye , E. Baxter , A. Bazarko , J. A. Beall , R. Bean , D. Beck , S. Beckman , J. Begin , A. Beheshti , B. Beringue , T. Bhandarkar , S. Bhimani , F. Bianchini , E. Biermann , S. Biquard , B. Bixler , S. Boada , D. Boettger , B. Bolliet , J. R. Bond , J. Borrill , J. Borrow , C. Braithwaite , T. L. R. Brien , M. L. Brown , S. M. Bruno , S. Bryan , R. Bustos , H. Cai , E. Calabrese , V. Calafut , F. M. Carl , A. Carones , J. Carron , A. Challinor , P. Chanial , N. Chen , K. Cheung , B. Chiang , Y. Chinone , J. Chluba , H. S. Cho , S. K. Choi , M. Chu , J. Clancy , S. E. Clark , P. Clarke , J. Cleary , D. L. Clements , J. Connors , C. Contaldi , G. Coppi , L. Corbett , N. F. Cothard , W. Coulton , K. D. Crowley , K. T. Crowley , A. Cukierman , J. M. D'Ewart , K. Dachlythra , R. Datta , S. Day-Weiss , T. de Haan , M. Devlin , L. Di Mascolo , S. Dicker , B. Dober , C. Doux , P. Dow , S. Doyle , C. J. Duell , S. M. Duff , A. J. Duivenvoorden , J. Dunkley , D. Dutcher , R. Dünner , M. Edenton , H. El Bouhargani , J. Errard , G. Fabbian , V. Fanfani , G. S. Farren , J. Fergusson , S. Ferraro , R. Flauger , A. Foster , K. Freese , J. C. Frisch , A. Frolov , G. Fuller , N. Galitzki , P. A. Gallardo , J. T. Galvez Ghersi , K. Ganga , J. Gao , X. Garrido , E. Gawiser , M. Gerbino , R. Gerras , S. Giardiello , A. Gill , V. Gilles , U. Giri , E. Gleave , V. Gluscevic , N. Goeckner-Wald , J. E. Golec , S. Gordon , M. Gralla , S. Gratton , D. Green , J. C. Groh , C. Groppi , Y. Guan , N. Gupta , J. E. Guðmundsson , S. Hagstotz , P. Hargrave , S. Haridas , K. Harrington , I. Harrison , M. Hasegawa , M. Hasselfield , V. Haynes , M. Hazumi , A. He , E. Healy , S. W. Henderson , B. S. Hensley , E. Hertig , C. Hervías-Caimapo , M. Higuchi , C. A. Hill , J. C. Hill , G. Hilton , M. Hilton , A. D. Hincks , G. Hinshaw , R. Hložek , A. Y. Q. Ho , S. Ho , S. P. Ho , T. D. Hoang , J. Hoh , E. Hornecker , A. L. Hornsby , S. C. Hotinli , Z. Huang , Z. B. Huber , J. Hubmayr , K. Huffenberger , J. P. Hughes , A. Idicherian Lonappan , M. Ikape , K. Irwin , J. Iuliano , A. H. Jaffe , B. Jain , H. T. Jense , O. Jeong , A. Johnson , B. R. Johnson , M. Johnson , M. Jones , B. Jost , D. Kaneko , E. D. Karpel , Y. Kasai , N. Katayama , B. Keating , B. Keller , R. Keskitalo , J. Kim , T. Kisner , K. Kiuchi , J. Klein , K. Knowles , A. M. Kofman , B. J. Koopman , A. Kosowsky , R. Kou , N. Krachmalnicoff , D. Kramer , A. Krishak , A. Krolewski , A. Kusaka , A. Kusiak , P. La Plante , A. La Posta , A. Laguë , J. Lashner , M. Lattanzi , A. Lee , E. Lee , J. Leech , C. Lessler , J. S. Leung , A. Lewis , Y. Li , Z. Li , M. Limon , L. Lin , M. Link , J. Liu , Y. Liu , J. Lonergan , T. Louis , T. Lucas , M. Ludlam , M. Lungu , M. Lyons , N. MacCrann , A. MacInnis , M. Madhavacheril , D. Mak , F. Maldonado , M. Mallaby-Kay , A. Manduca , A. Mangu , H. Mani , A. S. Maniyar , G. A. Marques , J. Mates , T. Matsumura , P. Mauskopf , A. May , N. McCallum , H. McCarrick , F. McCarthy , M. McCulloch , J. McMahon , P. D. Meerburg , Y. Mehta , J. Melin , J. Meyers , A. Middleton , A. Miller , M. Mirmelstein , K. Moodley , J. Moore , M. Morshed , T. Morton , E. Moser , T. Mroczkowski , M. Murata , M. Münchmeyer , S. Naess , H. Nakata , T. Namikawa , M. Nashimoto , F. Nati , P. Natoli , M. Negrello , S. K. Nerval , L. Newburgh , D. V. Nguyen , A. Nicola , M. D. Niemack , H. Nishino , Y. Nishinomiya , A. Orlando , J. Orlowski-Scherer , L. Pagano , L. A. Page , S. Pandey , A. Papageorgiou , I. Paraskevakos , B. Partridge , R. Patki , M. Peel , K. Perez Sarmiento , F. Perrotta , P. Phakathi , L. Piccirillo , E. Pierpaoli , T. Pinsonneault-Marotte , G. Pisano , D. Poletti , R. Puddu , G. Puglisi , F. J. Qu , M. J. Randall , C. Ranucci , C. Raum , R. Reeves , C. L. Reichardt , M. Remazeilles , Y. Rephaeli , D. Riechers , J. Robe , M. F. Robertson , N. Robertson , K. Rogers , F. Rojas , A. Romero , E. Rosenberg , A. Rotti , S. Rowe , A. Roy , S. Sadeh , N. Sailer , K. Sakaguri , T. Sakuma , Y. Sakurai , M. Salatino , G. H. Sanders , D. Sasaki , M. Sathyanarayana Rao , T. P. Satterthwaite , L. Saunders , L. Scalcinati , E. Schaan , B. Schmitt , M. Schmittfull , N. Sehgal , J. Seibert , Y. Seino , U. Seljak , S. Shaikh , E. Shaw , P. Shellard , B. Sherwin , M. Shimon , J. E. Shroyer , C. Sierra , J. Sievers , C. Sifón , P. Sikhosana , M. Silva-Feaver , S. M. Simon , A. Sinclair , K. Smith , W. Sohn , X. Song , R. F. Sonka , D. Spergel , J. Spisak , S. T. Staggs , G. Stein , J. R. Stevens , R. Stompor , E. Storer , R. Sudiwala , J. Sugiyama , K. M. Surrao , S. Sutariya , A. Suzuki , J. Suzuki , O. Tajima , S. Takakura , A. Takeuchi , I. Tansieri , A. C. Taylor , G. Teply , T. Terasaki , A. Thomas , D. B. Thomas , R. Thornton , H. Trac , T. Tsan , E. Tsang King Sang , C. Tucker , J. Ullom , L. Vacher , L. Vale , A. van Engelen , J. Van Lanen , J. van Marrewijk , D. D. Van Winkle , C. Vargas , E. M. Vavagiakis , I. Veenendaal , C. Vergès , M. Vissers , M. Viña , K. Wagoner , S. Walker , L. Walters , Y. Wang , B. Westbrook , J. Williams , P. Williams , H. Winch , E. J. Wollack , K. Wolz , J. Wong , Z. Xu , K. Yamada , E. Young , B. Yu , C. Yu , M. Zannoni , K. Zheng , N. Zhu , A. Zonca , I. Zubeldia

New Astrophysical Opportunities Exploiting Spatio-Temporal Optical Correlations

The space-time correlations of streams of photons can provide fundamentally new channels of information about the Universe. Today's astronomical observations essentially measure certain amplitude coherence functions produced by a source.…

Instrumentation and Methods for Astrophysics · Physics 2009-03-03 C. Barbieri , M. K. Daniel , W. J. de Wit , D. Dravins , H. Jensen , P. Kervella , S. Le Bohec , F. Malbet , P. Nunez , J. P. Ralston , E. N. Ribak

First measurements and upgrade plans of the MAGIC intensity interferometer

The two MAGIC 17-m diameter Imaging Atmospheric Cherenkov Telescopes have been equipped to work also as an intensity interferometer with a deadtime-free, 4-channel, GPU-based, real-time correlator. Operating with baselines between approx.…

Instrumentation and Methods for Astrophysics · Physics 2022-09-30 Juan Cortina , V. A. Acciari , A. Biland , E. Colombo , C. da Costa , C. Delgado , C. Diaz , M. Fiori , D. Fink , T. Hassan , I. Jimenez-Martinez , E. Lyard , M. Mariotti , G. Martinez , R. Mirzoyan , G. Naletto , M. Polo , N. Produit , J. J. Rodriguez , T. Schweizer , R. Walter , C. W. Wunderlich , L. Zampieri , the MAGIC , LST collaborations

SIMTERFERE: An optical interferometry simulator for quantifying the coherent flux stability of VLTI/GRAVITY+. Reaching per mill stability: Application to exoplanet spectroscopy

The implementation of the GRAVITY+ Adaptive Optics (GPAO) system at VLTI enables unprecedented sensitivity and stability in optical interferometry. This allows high-precision characterization of directly imaged exoplanets at medium spectral…

Instrumentation and Methods for Astrophysics · Physics 2026-03-17 J. R. Sauter , A. von Stauffenberg , G. Bourdarot , W. Brandner , F. Eisenhauer , L. Kreidberg , L. Labadie , S. Scheithauer , D. Trevascus , R. van Boekel

Multiwavelength Observations of The TeV Binary LS I +61 303 with VERITAS, Fermi-LAT and Swift-XRT During a TeV Outburst

We present the results of a multiwavelength observational campaign on the TeV binary system LS I +61 303 with the VERITAS telescope array (>200 GeV), Fermi-LAT (0.3-300 GeV), and Swift-XRT (2-10 keV). The data were taken from December 2011…

High Energy Astrophysical Phenomena · Physics 2015-06-17 E. Aliu , S. Archambault , B. Behera , K. Berger , M. Beilicke , W. Benbow , R. Bird , A. Bouvier , V. Bugaev , M. Cerruti , X. Chen , L. Ciupik , M. P. Connolly , W. Cui , J. Dumm , A. Falcone , S. Federici , Q. Feng , J. P. Finley , P. Fortin , L. Fortson , A. Furniss , N. Galante , G. H. Gillanders , S. Griffin , S. T. Griffiths , J. Grube , G. Gyuk , D. Hanna , J. Holder , G. Hughes , T. B. Humensky , P. Kaaret , M. Kertzman , Y. Khassen , D. Kieda , F. Krennrich , M. J. Lang , G. Maier , P. Majumdar , S. McArthur , A. McCann , P. Moriarty , R. Mukherjee , A. O'Faolain de Bhroithe , R. A. Ong , A. N. Otte , N. Park , J. S. Perkins , M. Pohl , A. Popkow , H. Prokoph , J. Quinn , K. Ragan , J. Rajotte , G. Ratliff , P. T. Reynolds , G. T. Richards , E. Roache , G. H. Sembroski , F. Sheidaei , C. Skole , A. W. Smith , D. Staszak , I. Telezhinsky , J. Tyler , A. Varlotta , S. Vincent , S. P. Wakely , T. C. Weekes , A. Weinstein , R. Welsing , A. Zajczyk , B. Zitzer

EXIST: A High Sensitivity Hard X-ray Imaging Sky Survey Mission for ISS

A deep all-sky imaging hard x-ray survey and wide-field monitor is needed to extend soft (ROSAT) and medium (ABRIXAS2) x-ray surveys into the 10-100 keV band (and beyond) at comparable sensitivity (~0.05 mCrab). This would enable discovery…

Astrophysics · Physics 2009-09-17 J. Grindlay , L. Bildsten , D. Chakrabarty , M. Elvis , A. Fabian , F. Fiore , N. Gehrels , C. Hailey , F. Harrison , D. Hartmann , T. Prince , B. Ramsey , R. Rothschild , G. Skinner , S. Woosley

ESO Imaging Survey: Past Activities and Future Prospects

The ESO Imaging Survey (EIS) is an ongoing project to carry out public imaging surveys to support programs on the ESO Very Large Telescope (VLT). The first phase of the project started in July 1997 and consisted of a moderately deep,…

Astrophysics · Physics 2007-05-23 L. da Costa , S. Arnouts , C. Benoist , E. Deul , R. Hook , Y. -S. Kim , M. Nonino , E. Pancino , R. Rengelink , R. Slijkhuis , A. Wicenec , S. Zaggia

VTSCat - The VERITAS Catalog of Gamma Ray Observations

We present a catalog of results of gamma-ray observations made by VERITAS, published from 2008 to 2020. VERITAS is a ground based imaging atmospheric Cherenkov telescope observatory located at the Fred Lawrence Whipple Observatory (FLWO) in…

High Energy Astrophysical Phenomena · Physics 2021-08-17 Sameer Patel , Gernot Maier , Philip Kaaret

VERITAS Observations under Bright Moonlight

The presence of moonlight is usually a limiting factor for imaging atmospheric Cherenkov telescopes due to the high sensitivity of the camera photomultiplier tubes (PMTs). In their standard configuration, the extra noise limits the…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Sean Griffin

Demonstration of Time Delay Interferometry and Spacecraft Ranging in a Space-based Gravitational Wave Detector using the UF-LISA Interferometry Simulator

Space-based gravitational-wave observatories such as the Laser Interferometer Space Antenna (LISA) use time-shifted and time-scaled linear combinations of differential laser-phase beat signals to cancel the otherwise overwhelming laser…

Instrumentation and Methods for Astrophysics · Physics 2013-05-30 Shawn J. Mitryk , Josep Sanjuan , Guido Mueller

The WINTER Observatory: A One-Degree InGaAs Survey Camera to study the Transient Infrared Sky

The Wide-field Infrared Transient Explorer (WINTER) is a near-infrared time-domain survey instrument operating on a dedicated 1-meter robotic telescope at Palomar Observatory. The project takes advantage of recent technology advances in…

Instrumentation and Methods for Astrophysics · Physics 2026-02-09 Danielle Frostig , Nathan Lourie , Viraj Karambelkar , Mansi M. Kasliwal , Andrew Malonis , Robert A. Simcoe , Robert Stein , John W. Baker , Kevin Burdge , Rick Burruss , Curt Corcoran , Kishalay De , Gabor Furesz , Nicolae Ganciu , Kari Haworth , Carolyn M. Heffner , Erik Hinrichsen , Jill Juneau , Geoffrey Mo , Josiah Purdum , Sam Rose , Cruz Soto , Jeffry Zolkower

Observing the Energetic Universe at Very High Energies with the VERITAS Gamma Ray Observatory

Very high energy gamma-ray observations offer indirect methods for studying the highest energy cosmic rays in our Universe. The origin of cosmic rays at energies greater than $10^{18}$ eV remains a mystery, and many questions in particle…

High Energy Astrophysical Phenomena · Physics 2018-09-28 R. Mukherjee