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Multi-conjugate Adaptive optics Demonstrator
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<p>Multi-conjugate Adaptive optics Demonstrator (MAD) is an instrument that allowed the <a href="/facts/European_Southern_Observatory/mJtjDbwx">European Southern Observatory</a>'s <a href="/facts/Very_Large_Telescope/xUQCLysQ">Very Large Telescope</a> to observe <a href="/facts/Celestial_object/BCHLa0Q2">celestial objects</a> with most of the <a href="/facts/Atmosphere/oUpLaGRF">atmosphere</a>'s <a href="/facts/Atmospheric_seeing/TdVzedKJ">blurring</a> removed. As with other <a href="/facts/Adaptive_optics/D1vWeHK0">adaptive optics</a> systems, it works by performing real-time corrections to the atmospheric <a href="/facts/Turbulence/NpgFUhG5">turbulence</a> by means of computer-controlled deformable <a href="/facts/Mirror/wMu4u6BB">mirrors</a>. Its particularity is the correction over a wider <a href="/facts/Field_of_view/Xp1G4CXF">field of view</a> than previous systems, which only used a single deformable mirror. </p>