LINC-NIRVANA Pathfinder: testing the next generation of wave front sensors at LBT

Albert R. Conrad; Carmelo Arcidiacono; Harald Baumeister; Maria Bergomi; Thomas Bertram; Juergen Berwein; Chris Biddick; Peter Bizenberger; Matthieu Brangier; Florian Briegel; Alessandro Brunelli; Joar Brynnel; Lorenzo Busoni; Norm Cushing; Fulvio De Bonis; Michele De La Pena; Simone Esposito; Jacopo Farinato; Luca Fini; Richard F. Green; Tom Herbst; Ralph Hofferbert; Frank Kittmann; Martin Kuerster; Werner Laun; Daniel Meschke; Lars Mohr; Aleksei Pavlov; Jorg-Uwe Pott; Alfio Puglisi; Roberto Ragazzoni; Andrew Rakich; Ralf-Rainer Rohloff; Jan Trowitzsch; Valentina Viotto; Xianyu Zhang

doi:10.1117/12.925650

13 September 2012 LINC-NIRVANA Pathfinder: testing the next generation of wave front sensors at LBT

Albert R. Conrad, Carmelo Arcidiacono, Harald Baumeister, Maria Bergomi, Thomas Bertram, Juergen Berwein, Chris Biddick, Peter Bizenberger, Matthieu Brangier, Florian Briegel, Alessandro Brunelli, Joar Brynnel, Lorenzo Busoni, Norm Cushing, Fulvio De Bonis, Michele De La Pena, Simone Esposito, Jacopo Farinato, Luca Fini, Richard F. Green, Tom Herbst, Ralph Hofferbert, Frank Kittmann, Martin Kuerster, Werner Laun, Daniel Meschke, Lars Mohr, Aleksei Pavlov, Jorg-Uwe Pott, Alfio Puglisi, Roberto Ragazzoni, Andrew Rakich, Ralf-Rainer Rohloff, Jan Trowitzsch, Valentina Viotto, Xianyu Zhang

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84470V (2012) https://doi.org/10.1117/12.925650
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

LINC-NIRVANA will employ four wave front sensors to realize multi-conjugate correction on both arms of a Fizeau interferometer for LBT. Of these, one of the two ground-layer wave front sensors, together with its infrared test camera, comprise a stand-alone test platform for LINC-NIRVANA. Pathfinder is a testbed for full LINC-NIRVANA intended to identify potential interface problems early in the game, thus reducing both technical, and schedule, risk. Pathfinder will combine light from multiple guide stars, with a pyramid sensor dedicated to each star, to achieve ground-layer AO correction via an adaptive secondary: the 672-actuator thin shell at the LBT. The ability to achieve sky coverage by optically coadding light from multiple stars has been previously demonstrated; and the ability to achieve correction with an adaptive secondary has also been previously demonstrated. Pathfinder will be the first system at LBT to combine both of these capabilities. Since reporting our progress at A04ELT2, we have advanced the project in three key areas: definition of specific goals for Pathfinder tests at LBT, more detail in the software design and planning, and calibration. We report on our progress and future plans in these three areas, and on the project overall.

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Albert R. Conrad, Carmelo Arcidiacono, Harald Baumeister, Maria Bergomi, Thomas Bertram, Juergen Berwein, Chris Biddick, Peter Bizenberger, Matthieu Brangier, Florian Briegel, Alessandro Brunelli, Joar Brynnel, Lorenzo Busoni, Norm Cushing, Fulvio De Bonis, Michele De La Pena, Simone Esposito, Jacopo Farinato, Luca Fini, Richard F. Green, Tom Herbst, Ralph Hofferbert, Frank Kittmann, Martin Kuerster, Werner Laun, Daniel Meschke, Lars Mohr, Aleksei Pavlov, Jorg-Uwe Pott, Alfio Puglisi, Roberto Ragazzoni, Andrew Rakich, Ralf-Rainer Rohloff, Jan Trowitzsch, Valentina Viotto, and Xianyu Zhang "LINC-NIRVANA Pathfinder: testing the next generation of wave front sensors at LBT", Proc. SPIE 8447, Adaptive Optics Systems III, 84470V (13 September 2012); https://doi.org/10.1117/12.925650

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