The Multiconjugate Adaptive optics Demonstrator (MAD) has 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.
@article{arxiv.0911.4879,
title = {Layer Oriented Wavefront sensor for MAD on Sky operations},
author = {Carmelo Arcidiacono and Matteo Lombini and Roberto Ragazzoni and Jacopo Farinato and Emiliano Diolaiti and Andrea Baruffolo and Paolo Bagnara and Giorgia Gentile and Laura Schreiber and Enrico Marchetti and Johann Kolb and Sebastien Tordo and Robert Donaldson and Christian Soenke and Sylvain Oberti and Enrico Fedrigo and Elise Vernet and Norbert Hubin},
journal= {arXiv preprint arXiv:0911.4879},
year = {2014}
}
Comments
12 pages, 10 figures, typo and cut&paste-corrected Proceedings of the SPIE, Volume 7015, pp. 70155P-70155P-12 (Marseille 2008)