The two LBT 672 adaptive secondary have been delivered sequentially to INAF-Osservatorio Astrofisico di Arcetri where they have been extensively optically tested and calibrated.
In 2010, the first unit has been transported to the LBT telescope site on Mount Graham, Arizona, where it started commissioning and first science operation in 2011. At same time, the second unit has been also installed on the telescope and currently the adaptive secondaries of both telescope arms are fully operative.
The adaptive unit, combined with the pyramid wavefront sensor developed by INAF, obtained from beginning astonished results: the galactic center images were judged to be 3X better than the Hubble ones and nearly diffraction limited images were routinely acquired ( > 80% Strehl in H).
Beside the adaptive secondary, Microgate has devolepped and realized the whole adaptive optics computational path including several Slope Computers (FLAO, LINC-Nirvana, LBTI, ARGOS) and the Real Time Recontruction that is performed by the same electronics controlling the adaptive secondary.
Slow motion movie showing the transition from atmospheric blurring to correction by the LBT adaptive optics system. The higher resolution easily separates the two previously blended star images, and the third more distant object can be detected above the background because its light is also more concentrated.
Courtesy by LBTC
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