The ASTRI Mini-Array (MA) is an INAF project to build and operate a facility study astronomical sources emitting at very high-energy in the TeV spectral band. MA consists of group nine innovative Imaging Atmospheric Cherenkov telescopes. telescopes will be installed Teide Astronomical Observatory Instituto de Astrofisica Canarias (IAC) Tenerife (Canary Islands, Spain) on basis host agreement wi...

The H.E.S.S. imaging air Cherenkov telescope array has performed a blind survey at energies above 100 GeV of parts of the Galactic plane as well as dedicated (deeper) observations of gamma-ray source candidates.New sources including shell type super-nova remnants, pulsar-wind nebulae, binary systems, cosmic ray illuminated molecular clouds, as well as unidentified sources have been found. In th...

The Sudbury Neutrino Observatory will use an array of 9500 Hamamatsu R1480 8-in. photomultiplier tubes and their associated concentrators to detect Cherenkov light. This paper describes an experimental investigation of the photomultiplier tubes and their concentrators, together with work done to model the angular and wavelength response. Good agreement is achieved. 0168~9002/96/$15.00 Copyright...