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25 September 2012 DRAGON: a wide-field multipurpose real time adaptive optics test bench
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DRAGON is be a new and in many ways unique visible light adaptive optics test bench. Initially, it will test new and existing concepts for CANARY, the laser guide star tomographic adaptive optics demonstrator on the WHT, then later it will be used to explore concepts for other existing and future telescopes. Natural and Laser Guide Stars (NGS and LGS) are emulated, where the LGSs exhibit the effects of passing up through turbulence and spot elongation. AO correction is performed by one high and one low order deformable mirror, allowing woofer-tweeter control, and multiple high and low order wave front sensors detect wave front error. The Durham Adaptive Optics Real-time Controller (DARC) is used to provide real-time control over various DRAGON configurations. DRAGON is currently under construction, with the turbulence simulator completed. Construction and alignment of the system is expected to be finished in the coming year, though first results from completed modules follow sooner.
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Andrew P. Reeves, Richard M. Myers, Timothy J. Morris, Alastair G. Basden, Nazim A. Bharmal, Stephen Rolt, David G. Bramall, Nigel A. Dipper, and Edward J. Younger "DRAGON: a wide-field multipurpose real time adaptive optics test bench", Proc. SPIE 8447, Adaptive Optics Systems III, 84474Y (25 September 2012); doi: 10.1117/12.925670;

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