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The Cherenkov Telescope Array (CTA) is the next generation facility of Imaging Atmospheric Cherenkov Telescopes. It will reach unprecedented sensitivity and energy resolution in very-high-energy gamma-ray astronomy. CTA will detect…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 M. Doro , M. Daniel , R. de los Reyes , M. Gaug , M. C. Maccarone

The Large Size Telescope (LST) of the Cherenkov Telescope Array (CTA) is designed to achieve a threshold energy of 20 GeV. The LST optics is composed of one parabolic primary mirror 23 m in diameter and 28 m focal length. The reflector dish…

The effective mirror area of an imaging atmospheric Cherenkov telescope is a crucial key parameter for trigger threshold determination and energy calibration. It is usually calculated by 3D ray-tracing simulation using a simplified…

Instrumentation and Methods for Astrophysics · Physics 2023-09-19 Akira Okumura , Duncan Ross , Francesco G. Saturni , Giorgia Sironi , Richard White

The Cherenkov Telescope Array (CTA) is the major ground-based gamma-ray observatory planned for the next decade and beyond. Consisting of two large atmospheric Cherenkov telescope arrays (one in the southern hemisphere and one in the…

High Energy Astrophysical Phenomena · Physics 2019-06-12 The CTA Consortium , represented by Rene A. Ong

The Cherenkov Telescope Array (CTA) represents the next generation of ground-based instruments for very-high-energy (VHE) gamma-ray astronomy, aimed at improving on the sensitivity of current-generation experiments by an order of magnitude…

The key parameters of Cherenkov Correlated Timing (CCT) detectors are discussed. Measurements of radiator geometry, optical properties of radiator and coupling materials, and photon detector timing performance are presented.

The Cherenkov Telescope Array is a world-wide project for a new generation of ground-based Cherenkov telescopes of the Imaging class with the aim of exploring the highest energy region of the electromagnetic spectrum. With two planned…

The Cherenkov Telescope Array (CTA) is the observatory for ground-based gamma-ray astronomy that will shape the domain of TeV astronomy for the next decades. CTA will comprise more than 100 imaging air Cherenkov telescopes deployed on two…

Instrumentation and Methods for Astrophysics · Physics 2020-04-21 Jürgen Knödlseder

The Cherenkov Telescope Array (CTA) is the next generation of Imaging Atmospheric Cherenkov Telescopes. It will reach a sensitivity and an energy resolution with no precendent in very high energy gamma-ray astronomy. In order to achieve…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 A. López-Oramas , O. Abril , O. Blanch Bigas , J. Boix , V. Da Deppo , M. Doro , L. Font , D. Garrido , M. Gaug , M. Martínez , G. Vasileiadis

In 2012, the High Energy Stereoscopic System (H.E.S.S.) was expanded by a fifth telescope (CT5). With an effective mirror diameter of 28m, CT5 is able to detect the Cherenkov light of very faint gamma-ray air showers, thereby significantly…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Raphaël Chalmé-Calvet , Markus Holler , Mathieu de Naurois , Jean-Paul Tavernet

We present the development of a novel 11328 pixel silicon photomultiplier (SiPM) camera for use with a ground-based Cherenkov telescope with Schwarzschild-Couder optics as a possible medium-sized telescope for the Cherenkov Telescope Array…

The Cherenkov Telescope Array (CTA) is a future very high energy gamma-ray observatory. CTA will be comprised of small-, medium- and large-size telescopes covering an energy range from tens of GeV to hundreds of TeV and will surpass…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 T. Jogler , M. D. Wood , J. Dumm

For the proposed Cherenkov Telescope Array (CTA), a post-calibration point-source location accuracy of 3 seconds of arc is aimed for under favorable observing conditions and for gamma-ray energies exceeding 100 GeV. In this contribution,…

Instrumentation and Methods for Astrophysics · Physics 2015-09-08 Stefan Eschbach , Alexander Ziegler , Christopher van Eldik , Johannes Veh , David Berge , Markus Gaug

Atmospheric monitoring is an integral part of the design of the Cherenkov Telescope Array (CTA), as atmospheric conditions affect the observations by Imaging Atmospheric Cherenkov Telescopes (IACT) in multiple ways. The variable optical…

Instrumentation and Methods for Astrophysics · Physics 2018-01-22 Jan Ebr , Tomasz Bulik , Lluis Font , Markus Gaug , Petr Janecek , Jakub Jurysek , Dusan Mandat , Stanislav Stefanik , Laura Valore , George Vasileiadis

Gamma-ray observations in the very-high-energy domain (E > 30 GeV) can exploit the imaging of few-nanosecond Cherenkov flashes from atmospheric particle showers. Photomultipliers have been used as the primary photosensors to detect…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Jonathan Biteau , David Chinn , Dennis Dang , Kevin Doyle , Caitlin A. Johnson , David A. Williams

In October 2019, the central 28 m telescope of the H.E.S.S. experiment has been upgraded with a new camera. The camera is based on the FlashCam design which has been developed in view of a possible future implementation in the Medium-Sized…

The Cherenkov Telescope Array (CTA) observatory will be deployed over two sites in the two hemispheres. Both sites will be equipped with four Large Size Telescopes (LSTs), which are crucial to achieve the science goals of CTA in the 20-200…

Instrumentation and Methods for Astrophysics · Physics 2017-08-09 D. Mazin , J. Cortina , M. Teshima , the CTA Consortium

A significant source of noise for Imaging Atmospheric Cherenkov Telescopes (IACTs), which are designed to measure air showers caused by astrophysical gamma rays, is optical light emitted from the night sky. This Night Sky Background (NSB)…

Instrumentation and Methods for Astrophysics · Physics 2025-06-30 Gerrit Roellinghoff , Samuel T. Spencer , Stefan Funk

The Cherenkov Telescope Array Observatory (CTAO) will greatly improve upon sensitivities in the field of very-high-energy gamma-ray astrophysics. The CTAO northern site (CTAO-North, La Palma, Spain) currently hosts LST-1 with the remaining…

Instrumentation and Methods for Astrophysics · Physics 2025-09-17 Luca Riitano , Justin Vandenbroucke , Zach Curtis-Ginsberg

The Small-Size Telescope with single-mirror (SST-1M) is a 4 m Davies-Cotton telescope and is among the proposed telescope designs for the Cherenkov Telescope Array (CTA). It is conceived to provide the high-energy ($>$ few TeV) coverage.…