The Uuniversity of Durham Mark 6 Gamma Ray Telescope
  The design, construction and operation of the University of Durham ground-based gamma ray telescope is discussed. The telescope has been designed to detect gamma rays in the < 200 GeV region and to achieve good discrimination between gamma ray and hadron initiated showers in the higher energy region (> 300 GeV). The telescope was commissioned in 1995 and a description of its design and operation is presented, together with a verification of the telescope's performance 
P. Armstrong, P. M. Chadwick, P. J. Cottle, J. E. Dickinson, M. R.   Dickinson, N. A. Dipper, S. E. Hilton, W. Hogg, J. Hold...