Angular Resolution of Pachmarhi Array of Cerenkov Telescopes
P. Majumdar, B. S. Acharya, P. N. Bhat, V. R. Chitnis, M. A. Rahman, B. B. Singh, P. R. Vishwanath
Abstract
Pachmarhi Array of Čerenkov Telescopes(PACT), consisting of a distributed array of 25 telescopes is used to sample the atmospheric Čerenkov Photon showers. The shower front is fitted to a plane and the direction of arrival of primary particle is obtained. The accuracy in the estimation of the arrival direction of showers has been estimated to be 0.1~ using `split' array method. The angular resolution is expected to be even better when a spherical front is used for direction reconstruction or correction for the curvature of the front is applied. This is the best angular resolution among all the currently operating atmospheric Čerenkov telescopes in the world.
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