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The Cherenkov Telescope Array (CTA) is a project for a next-generation observatory for very high energy (GeV-TeV) ground-based gamma-ray astronomy, currently in its design phase, and foreseen to be operative a few years from now. Several…

The MAGIC 17m-diameter Imaging Air Cherenkov Telescope (IACT) has been commissioned beginning of 2005. The telescope has been designed to achieve the lower detection energy threshold ever obtained with an IACT, about 50 GeV. A new window in…

Astrophysics · Physics 2007-05-23 J. Flix

We present studies for optimizing the next generation of ground-based imaging atmospheric Cherenkov telescopes (IACTs). Results focus on mid-sized telescopes (MSTs) for CTA, detecting very high energy gamma rays in the energy range from a…

Instrumentation and Methods for Astrophysics · Physics 2015-07-15 M. Wood , T. Jogler , J. Dumm , S. Funk

The current generation of Imaging Atmospheric telescopes (IACTs) has demonstrated the power of the technique in an energy range between ~100 GeV up to several tens of TeV. At the high-energy end, these instruments are limited by photon…

High Energy Astrophysical Phenomena · Physics 2009-01-21 S. Funk , J. A. Hinton

H.E.S.S. -- the High Energy Stereoscopic System -- is a new system of large imaging atmospheric Cherenkov telescopes, with about 100 m^2 mirror area for each of four telescopes, and photomultiplier cameras with a large field of view (5…

The Cherenkov Telescope Array will be the next generation ground-based gamma ray observatory in the energy range from a few tens of GeV to hundreds of TeV. It will be built on two sites, one for each hemisphere, to cover the entire sky. The…

Instrumentation and Methods for Astrophysics · Physics 2023-10-03 Davide Depaoli

The Cherenkov Telescope Array (CTA) is an international next-generation ground-based gamma-ray observatory. CTA will be implemented as southern and northern hemisphere arrays of tens of small, medium and large-sized imaging Cherenkov…

The two arrays of the Very High Energy gamma-ray observatory Cherenkov Telescope Array (CTA) will include four Large Size Telescopes (LSTs) each with a 23 m diameter dish and 28 m focal distance. These telescopes will enable CTA to achieve…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 G. Ambrosi , Y. Awane , H. Baba , A. Bamba , M. Barceló , U. Barres de Almeida , J. A. Barrio , O. Blanch Bigas , J. Boix , L. Brunetti , E. Carmona , E. Chabanne , M. Chikawa , P. Colin , J. L. Conteras , J. Cortina , F. Dazzi , A. Deangelis , G. Deleglise , C. Delgado , C. Díaz , F. Dubois , A. Fiasson , D. Fink , N. Fouque , L. Freixas , C. Fruck , A. Gadola , R. García , D. Gascon , N. Geffroy , N. Giglietto , F. Giordano , F. Grañena , S. Gunji , R. Hagiwara , N. Hamer , Y. Hanabata , T. Hassan , K. Hatanaka , T. Haubold , M. Hayashida , R. Hermel , D. Herranz , K. Hirotani , S. Inoue , Y. Inoue , K. Ioka , C. Jablonski , M. Kagaya , H. Katagiri , T. Kishimoto , K. Kodani , K. Kohri , Y. Konno , S. Koyama , H. Kubo , J. Kushida , G. Lamanna , T. Le Flour , M. López-Moya , R. López , E. Lorenz , P. Majumdar , A. Manalaysay , M. Mariotti , G. Martínez , M. Martínez , D. Mazin , J. M. Miranda , R. Mirzoyan , I. Monteiro , A. Moralejo , K. Murase , S. Nagataki , D. Nakajima , T. Nakamori , K. Nishijima , K. Noda , A. Nozato , Y. Ohira , M. Ohishi , H. Ohoka , A. Okumura , R. Orito , J. L. Panazol , D. Paneque , R. Paoletti , J. M. Paredes , G. Pauletta , S. Podkladkin , J. Prast , R. Rando , O. Reimann , M. Ribó , S. Rosier-Lees , K. Saito , T. Saito , Y. Saito , N. Sakaki , R. Sakonaka , A. Sanuy , H. Sasaki , M. Sawada , V. Scalzotto , S. Schultz , T. Schweizer , T. Shibata , S. Shu , J. Sieiro , V. Stamatescu , S. Steiner , U. Straumann , R. Sugawara , H. Tajima , H. Takami , S. Tanaka , M. Tanaka , L. A. Tejedor , Y. Terada , M. Teshima , T. Totani , H. Ueno , K. Umehara , A. Vollhardt , R. Wagner , H. Wetteskind , T. Yamamoto , R. Yamazaki , A. Yoshida , T. Yoshida , T. Yoshikoshi

The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory with sensitivity in the energy range from 20 GeV to beyond 300 TeV. CTA is proposed to consist of two arrays of 40-100 imaging atmospheric Cherenkov…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 G. Maier , L. Arrabito , K. Bernlöhr , J. Bregeon , F. Di Pierro , T. Hassan , T. Jogler , J. Hinton , A. Moralejo , M. Wood

For window applications in hot climates, it is desirable to have windows with high visible transparency, while maintaining strong reflectance in both the ultraviolet and near infrared, to minimize unwanted heat gain. Given that more than…

Optics · Physics 2026-05-04 Yeonghoon Jin , Seungwon Kim , Tanuj Kumar , Mikhail A. Kats , Kyoungsik Yu

Reconstruction of energies of very-high-energy gamma-rays observed by imaging atmospheric Cherenkov telescopes is affected by changes in the atmospheric conditions and the performance of telescope components. Reliable calibration schemes…

Instrumentation and Methods for Astrophysics · Physics 2019-09-24 Stanislav Stefanik , Dalibor Nosek

A new generation of low threshold Imaging Atmospheric Cherenkov Telescopes (IACTs) may reach gamma-ray energies about 10 GeV with high sensitivities and very large collection areas. At these low energies cosmic electrons significantly…

Astrophysics · Physics 2009-10-31 J. Cortina , J. C. Gonzalez

Imaging Atmospheric Cherenkov Telescopes (IACTs) are ground-based indirect detectors for cosmic gamma rays with energies above tens of GeV. The major backgrounds for gamma-ray observations in IACTs are cosmic-ray charged particles. The…

The Cherenkov Telescope Array (CTA) will be the largest cosmic gamma ray detector ever built in the world. It will be installed at two different sites in the North and South hemispheres and should be operational for about 30 years. In order…

Instrumentation and Methods for Astrophysics · Physics 2015-06-17 F. Hénault , P. O. Petrucci , L. jocou , B. Khélifi , P. Manigot , S. Hormigos , J. Knodlseder , J. F. Olive , P. Jean , M. Punch

We present two prescriptions for broadband (~77 - 252 GHz), millimeter-wave antireflection coatings for cryogenic, sintered polycrystalline aluminum oxide optics: one for large-format (700 mm diameter) planar and plano-convex elements, the…

The NectarCAM is a camera proposed for the medium-sized telescopes in the framework of the Cherenkov Telescope Array (CTA), the next-generation observatory for very-high-energy gamma-ray astronomy. The cameras are designed to operate in an…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 E. Moulin , C. Diaz , D. Durand , O. Feirreira , M. Fesquet , B. Giebels , J. -F. Glicenstein , D. Loiseau , F. Louis , F. Nunio , S. Rateau

Large Array of imaging atmospheric Cherenkov Telescope (LACT) is an array of 32 Cherenkov telescopes with 6-meter diameter mirrors to be constructed at the LHAASO site. In this work, we present a study on the layout optimization and…

High Energy Astrophysical Phenomena · Physics 2024-09-24 Zhipeng Zhang , Ruizhi Yang , ShouShan Zhang , Zhen Xie , Jiali Liu , LiQiao Yin , YuDong Wang , Lingling Ma , Zhen Cao

The Cherenkov Telescope Array (CTA) will be the first ground-based observatory for gamma-ray astronomy. With more than a hundred of 4th generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) distributed in two large arrays, CTA will…

Instrumentation and Methods for Astrophysics · Physics 2019-09-05 Thomas Tavernier , Jean-François Glicenstein , François Brun

The Cherenkov Telescope Array (CTA) represents the next generation of very high-energy gamma-ray observatory, which will provide broad coverage of gamma rays from 20 GeV to 300 TeV with unprecedented sensitivity. CTA will employ three…

Instrumentation and Methods for Astrophysics · Physics 2019-07-23 S. Sakurai , D. Depaoli , R. López-Coto