Abstract
We describe the calibration method to be used for the off-axis laser guide stars at the Large Binocular Telescope’s (LBT’s) advanced Rayleigh guided ground layer adaptive optics system facility and the optical design of a dedicated calibration unit. Several possible solutions for generating artificial stars with the same wavefront as the real beacons were investigated. We find the use of a computer-generated hologram to be the best solution to the problem of producing aberrated light exactly matching that delivered by the primary mirror of the telescope. A detailed design and tolerance analysis is complete and the project is currently moving into the fabrication phase.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
John M. Hill
Appl. Opt. 49(16) D115-D122 (2010)
Olivier Lardière, Rodolphe Conan, Richard Clare, Colin Bradley, and Norbert Hubin
Appl. Opt. 49(31) G78-G94 (2010)
Simone Esposito, Armando Riccardi, Fernando Quirós-Pacheco, Enrico Pinna, Alfio Puglisi, Marco Xompero, Runa Briguglio, Lorenzo Busoni, Luca Fini, Paolo Stefanini, Guido Brusa, Andrea Tozzi, Piero Ranfagni, Francesca Pieralli, Juan C. Guerra, Carmelo Arcidiacono, and Piero Salinari
Appl. Opt. 49(31) G174-G189 (2010)