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Proceedings Paper

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

Paper Details

Date Published: 13 September 2012
PDF: 10 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84470V (13 September 2012); doi: 10.1117/12.925650
Show Author Affiliations
Albert R. Conrad, Max-Planck-Institut für Astronomie (Germany)
Carmelo Arcidiacono, INAF - Osservatorio Astronomico di Bologna (Italy)
Harald Baumeister, Max-Planck-Institut für Astronomie (Germany)
Maria Bergomi, INAF - Osservatorio Astronomico di Padova (Italy)
Thomas Bertram, Max-Planck-Institut für Astronomie (Germany)
Juergen Berwein, Max-Planck-Institut für Astronomie (Germany)
Chris Biddick, Large Binocular Telescope Observatory (United States)
Peter Bizenberger, Max-Planck-Institut für Astronomie (Germany)
Matthieu Brangier, Max-Planck-Institut für Astronomie (Germany)
Florian Briegel, Max-Planck-Institut für Astronomie (Germany)
Alessandro Brunelli, INAF - Osservatorio Astronomico di Padova (Italy)
Joar Brynnel, Large Binocular Telescope Observatory (United States)
Lorenzo Busoni, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Norm Cushing, Large Binocular Telescope Observatory (United States)
Fulvio De Bonis, Max-Planck-Institut für Astronomie (Germany)
Michele De La Pena, Large Binocular Telescope Observatory (United States)
Simone Esposito, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Jacopo Farinato, INAF - Osservatorio Astronomico di Padova (Italy)
Luca Fini, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Richard F. Green, Large Binocular Telescope Observatory (United States)
Tom Herbst, Max-Planck-Institut für Astronomie (Germany)
Ralph Hofferbert, Max-Planck-Institut für Astronomie (Germany)
Frank Kittmann, Max-Planck-Institut für Astronomie (Germany)
Martin Kuerster, Max-Planck-Institut für Astronomie (Germany)
Werner Laun, Max-Planck-Institut für Astronomie (Germany)
Daniel Meschke, Max-Planck-Institut für Astronomie (Germany)
Lars Mohr, Max-Planck-Institut für Astronomie (Germany)
Aleksei Pavlov, Max-Planck-Institut für Astronomie (Germany)
Jorg-Uwe Pott, Max-Planck-Institut für Astronomie (Germany)
Alfio Puglisi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Roberto Ragazzoni, INAF - Osservatorio Astronomico di Padova (Italy)
Andrew Rakich, Large Binocular Telescope Observatory (United States)
Ralf-Rainer Rohloff, Max-Planck-Institut für Astronomie (Germany)
Jan Trowitzsch, Max-Planck-Institut für Astronomie (Germany)
Valentina Viotto, INAF - Osservatorio Astronomico di Padova (Italy)
Xianyu Zhang, Max-Planck-Institut für Astronomie (Germany)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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