The camera calibration system for the first Large-Sized Telescope designed for the Cherenkov Telescope Array Observatory

Michele Palatiello; Maurizio Lori; Diego Cauz

doi:10.1117/12.2629387

29 August 2022 The camera calibration system for the first Large-Sized Telescope designed for the Cherenkov Telescope Array Observatory

Michele Palatiello, Maurizio Lori, Diego Cauz

Author Affiliations +

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 1218841 (2022) https://doi.org/10.1117/12.2629387
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The commissioning phase of the first Large-Sized Telescope (LST-1), the first out of four in construction for the northern site of the Cherenkov Telescope Array Observatory (CTAO), is almost completed. The LST-1 is a prime focus ground-based gamma-ray telescope with a 24 m diameter and 28 m focal length parabolic dish, inaugurated in October 2018 at Observatorio del Roque de los Muchachos (ORM), La Palma (Spain). The LST-1 is equipped with a camera Calibration System (CaliBox), placed at the center of the mirror dish, that uniformly illuminates the Camera at the telescope focal plane 28 m away. The intensity of the light beam and its time characteristics permits to calibrate the Camera response to shower events. Here we describe the CaliBox mechanical structure, the optical performance, the new internal-calibration hardware and software system including the definitive OPC-UA Server protocol logic used to manage the CaliBox and the internal sub-systems.

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Michele Palatiello, Maurizio Lori, and Diego Cauz "The camera calibration system for the first Large-Sized Telescope designed for the Cherenkov Telescope Array Observatory", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 1218841 (29 August 2022); https://doi.org/10.1117/12.2629387

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