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Paper: Adaptive Optics with Laser Guide Stars - The ALFA System
Volume: 194, Working on the Fringe: Optical and IR Interferometry from Ground and Space
Page: 331
Authors: Ott, T.; Eckart, A.; Hackenberg, W.; Rabien, S.; Davies, R.; Anders, S.; Hippler, Stefan; Kasper, M.
Abstract: Adaptive optics will be essential for ground based interferometry with large apertures. In this contribution, we present the MPE/MPIA sodium laser guide star adaptive optics system ALFA, which has been installed at the Calar Alto 3.5-m telescope in southern Spain and is already openly available to the astronomical community. We discuss the current status of the AO and the launch beam. We report on the performance level achieved when the laser is used with the adaptive optics. We have begun to produce scientific results and mention two of these including the first use of a laser guide star to correct on an extragalactic object.
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