Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 30: Gammaastronomie I

T 30.8: Vortrag

Dienstag, 20. März 2018, 18:20–18:35, Philo-HS7

A pointing solution for the medium size telescopes for the Cherenkov Telescope Array — •Domenico Tiziani and Christopher van Eldik — Erlangen Centre for Astroparticle Physics, Erlangen, Germany

One important calibration for each telescope of the Cherenkov Telescope Array (CTA) is the pointing. The pointing calibration guarantees a correct transformation of positions on the focal plane of the instrument to sky coordinates and therefore directly influences the directional reconstruction of cosmic gamma rays. The favoured approach for this calibration for the medium size telescopes (MST) uses an optical CCD-camera that is installed in a central position of the mirror dish of each telescope. This camera has a wide field of view and images the focal plane of the telescope and the night sky in parallel. In this talk precision studies and progress in the verification of this calibration method are presented. Results derived from simulations and from data taken in laboratory tests and at the prototype telescope in Berlin/Adlershof are shown.