THE CLUE TRIGGER: A VME BASED TWO LEVEL TRIGGER FOR VHE EXPERIMENTS

Abstract We describe a trigger architecture developed for shower selection in the CLUE Cherenkov telescopes. The selection is made first in each telescope of the array looking at the low resolution images produced by fast electronics, than requiring temporal coincidence between units. Big effort has been put to simplify the programming of trigger configurations to help the user to switch easily between different observational and calibration requests.