The ASTRI SST-2M prototype for the Cherenkov Telescope Array: opto-mechanical performance

Rodolfo Canestrari; Enrico Giro; Giorgia Sironi; Elisa Antolini; Dino Fugazza; Salvatore Scuderi; Gino Tosti; Claudio Tanci; Federico Russo; Daniele Gardiol; Carlos Eduardo Fermino; Luca Stringhetti; Giovanni Pareschi; G. Marchiori; A. Busatta; E. Marcuzzi; I. Folla

doi:10.1117/12.2232270

8 August 2016 The ASTRI SST-2M prototype for the Cherenkov Telescope Array: opto-mechanical performance

Rodolfo Canestrari, Enrico Giro, Giorgia Sironi, Elisa Antolini, Dino Fugazza, Salvatore Scuderi, Gino Tosti, Claudio Tanci, Federico Russo, Daniele Gardiol, Carlos Eduardo Fermino, Luca Stringhetti, Giovanni Pareschi, G. Marchiori, A. Busatta, E. Marcuzzi, I. Folla

Author Affiliations +

Proceedings Volume 9906, Ground-based and Airborne Telescopes VI; 990619 (2016) https://doi.org/10.1117/12.2232270
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

ASTRI SST-2M is an end-to-end telescope prototype developed by the Italian National Institute of Astrophysics (INAF) in the framework of the Cherenkov Telescope Array (CTA). The CTA observatory, with a combination of large-, medium-, and small-sized telescopes (LST, MST and SST, respectively), will represent the next generation of imaging atmospheric Cherenkov telescopes. It will explore the very high-energy domain from a few tens of GeV up to few hundreds of TeV.

The ASTRI SST-2M telescope structure and mirrors have been installed at the INAF observing station at Serra La Nave, on Mt. Etna (Sicily, Italy) in September 2014. Its performance verification phase began in autumn 2015. Part of the scheduled activities foresees the study and characterization of the optical and opto-mechanical performance of the telescope prototype.

In this contribution we report the results achieved in terms of kinematic model analysis, mirrors reflectivity evolution, telescopes positioning, flexures and pointing model and the thermal behavior.

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Rodolfo Canestrari, Enrico Giro, Giorgia Sironi, Elisa Antolini, Dino Fugazza, Salvatore Scuderi, Gino Tosti, Claudio Tanci, Federico Russo, Daniele Gardiol, Carlos Eduardo Fermino, Luca Stringhetti, Giovanni Pareschi, G. Marchiori, A. Busatta, E. Marcuzzi, and I. Folla "The ASTRI SST-2M prototype for the Cherenkov Telescope Array: opto-mechanical performance", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990619 (8 August 2016); https://doi.org/10.1117/12.2232270

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