22 July 2014 SST dual-mirror telescopes for the Cherenkov Telescope Array
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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.
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Delphine Dumas, Delphine Dumas, Philippe Laporte, Philippe Laporte, Hélène Sol, Hélène Sol, Giovanni Pareschi, Giovanni Pareschi, Rodolfo Canestrari, Rodolfo Canestrari, Luca Stringhetti, Luca Stringhetti, Osvaldo Catalano, Osvaldo Catalano, Richard White, Richard White, Tim Greenshaw, Tim Greenshaw, Jim Hinton, Jim Hinton, Simon Blake, Simon Blake, } "SST dual-mirror telescopes for the Cherenkov Telescope Array", Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91452Z (22 July 2014); doi: 10.1117/12.2055089; https://doi.org/10.1117/12.2055089
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