The Energy Gap The means employed currently for gamma ray astronomy are capable of observing up to 30 GeV and then from 300 GeV. The large discrepancy of observable objects between these two energies provides many questions to astrophysicists.  Currently, the technology to raise the energy threshold of satellites is not available. It will be several years before a new satellite with a threshold of only around 50 GeV will be launched. One promising area of research which looks to reduce the energy gap is that of ground based telescope arrays. Two proposed arrays which we dealt with were VERITAS and STACEE.