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15 July 2008 Layer oriented wavefront sensor for MAD on sky operations
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The Multiconjugate Adaptive optics Demonstrator (MAD) had successfully demonstrated on sky both Star Oriented (SO) and Layer Oriented (LO) multiconjugate adaptive optics techniques. While SO has been realized using 3 Shack-Hartmann wavefront sensors (WFS), we designed a multi-pyramid WFS for the LO. The MAD bench accommodates both WFSs and a selecting mirror allows choosing which sensor to use. In the LO approach up to 8 pyramids can be placed on as many reference stars and their light is co-added optically on two different CCDs conjugated at ground and to an high layer. In this paper we discuss LO commissioning phase and on sky operations.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Arcidiacono, M. Lombini, R. Ragazzoni, J. Farinato, E. Diolaiti, A. Baruffolo, P. Bagnara, G. Gentile, L. Schreiber, E. Marchetti, J. Kolb, S. Tordo, R. Donaldson, C. Soenke, S. Oberti, E. Fedrigo, E. Vernet, and N. Hubin "Layer oriented wavefront sensor for MAD on sky operations", Proc. SPIE 7015, Adaptive Optics Systems, 70155P (15 July 2008); doi: 10.1117/12.791780;


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