Astronomy Picture of Day: Gamma Ray Telescope# Astronomy - 天文
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HESS Gamma-Ray Telescope
Credit: The HESS Collaboration
Explanation: Most ground-based telescopes with lenses and mirrors are hindered by the
Earth's nurturing, protective atmosphere that blurs images and scatters and absorbs light.
But this telescope was designed to detect extreme gamma rays - photons with over 100 billion
times the energy of visible light - and actually requires the atmosphere to operate. As the
gamma rays impact the upper atmosphere they produce air shower
Credit: The HESS Collaboration
Explanation: Most ground-based telescopes with lenses and mirrors are hindered by the
Earth's nurturing, protective atmosphere that blurs images and scatters and absorbs light.
But this telescope was designed to detect extreme gamma rays - photons with over 100 billion
times the energy of visible light - and actually requires the atmosphere to operate. As the
gamma rays impact the upper atmosphere they produce air shower