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Proceedings Paper

SST dual-mirror telescopes for the Cherenkov Telescope Array
Author(s): Delphine Dumas; Philippe Laporte; Hélène Sol; Giovanni Pareschi; Rodolfo Canestrari; Luca Stringhetti; Osvaldo Catalano; Richard White; Tim Greenshaw; Jim Hinton; Simon Blake
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Paper Abstract

The Cherenkov Telescope Array (CTA) is an international collaboration that aims to create the world's foremost very high energy gamma-ray observatory, composed of large, medium and small size telescopes (SST). The SSTs will be the most numerous telescopes on site and will focus on capturing the rarer highest energy photons. Three prototypes of SST are designed and currently under construction; two of them, ASTRI and SST-GATE, have been designed, based on a dual-mirror Schwarzschild-Couder (SC) design which has never been built before for any astronomical observation. The SC optical design allows for a small plate scale, a wide field of view and a lightweight cameras aiming to minimize the cost of SST telescopes in order to increase their number in the array.

The aim of this article is to report the progress of the two telescope projects prototyping telescope structures and cameras for the Small Size Telescopes for CTA. After a discussion of the CTA project and its scientific objectives, the performance of the SC design is described, with focus on the specific designs of SST-GATE and ASTRI telescopes. The design of both prototypes and their progress is reported in the current prototyping phase. The designs of Cherenkov cameras, CHEC and ASTRI, to be mounted on these telescopes are discussed and progresses are reported.

Paper Details

Date Published: 22 July 2014
PDF: 12 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91452Z (22 July 2014); doi: 10.1117/12.2055089
Show Author Affiliations
Delphine Dumas, Observatoire de Paris à Meudon, CNRS, Univ. Paris Diderot (France)
Philippe Laporte, Observatoire de Paris à Meudon, CNRS, Univ. Paris Diderot (France)
Hélène Sol, Observatoire de Paris à Meudon, CNRS, Univ. Paris Diderot (France)
Giovanni Pareschi, INAF - Osservatorio Astronomico di Brera (Italy)
Rodolfo Canestrari, INAF - Osservatorio Astronomico di Brera (Italy)
Luca Stringhetti, INAF - IASF Milano (Italy)
Osvaldo Catalano, INAF - IASF Cosmica (Italy)
Richard White, Univ. of Leicester (United Kingdom)
Tim Greenshaw, Univ. of Leicester (United Kingdom)
Jim Hinton, Univ. of Leicester (United Kingdom)
Simon Blake, Durham Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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