I had the pleasure this week to attend the inauguration of the ASTRI SST-2M telescope at Serra La Nave, Catania. This telescope is a prototype for the mini-array telescopes that will be part of the Cherenkov Telescope Array (CTA). CTA is the future of ground-based gamma-ray astronomy. The mini-array in particular will observe the universe at energies >10 TeV. For comparison, a 10 TeV photon has 1013 times more energy than an optical photon. CTA will observe the high-energy universe in a complementary energy range to the amazing Fermi LAT.
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