The Atmospheric Cherenkov Imaging Technique for Very High Energy   Gamma-ray Astronomy
  The Atmospheric Cherenkov Imaging Technique has opened up the gamma-ray spectrumfrom 100 GeV to 50 TeV to astrophysical exploration. The development of the technique is described as are the basic principles underlying its use. The current generation of arrays of telescopes is briefly described and the early results are summarized. 
Trevor C. Weekes