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The Four Laser Guide Star Facility (4LGSF) is part of the ESO Adaptive Optics Facility (AOF), in which one of the VLT unit telescopes, UT4, is transformed in an adaptive telescope - equipped with a deformable secondary mirror, two adaptive optics systems at the Nasmyth foci and four laser guide star modular units. In this poster we present the key results of the acceptance tests performed on the 4LGSF in Europe and first commissioning results obtained with the Laser Guide Star Unit #1 in stand-alone operation.
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