The LINC-NIRVANA high layer wavefront sensor laboratory experiment: progress report

Xianyu Zhang; Albert R. Conrad; Daniel Meschke; Thomas Bertram; Thomas M. Herbst; Carmelo Arcidiacono; Peter Bizenberger; Wolfgang Gaessler; Laura Schreiber; Roberto Ragazzoni; Martin Kuerster; Fulvio De Bonis; Lars Mohr; Jacopo Farinato; Emiliano Diolaiti; Hans-Walter Rix; Changhui Rao; Florian Briegel; Frank Kittmann; Juergen Berwein; Jan Trowitzsch; Matthieu Brangier

doi:10.1117/12.926304

13 September 2012 The LINC-NIRVANA high layer wavefront sensor laboratory experiment: progress report

Xianyu Zhang, Albert R. Conrad, Daniel Meschke, Thomas Bertram, Thomas M. Herbst, Carmelo Arcidiacono, Peter Bizenberger, Wolfgang Gaessler, Laura Schreiber, Roberto Ragazzoni, Martin Kuerster, Fulvio De Bonis, Lars Mohr, Jacopo Farinato, Emiliano Diolaiti, Hans-Walter Rix, Changhui Rao, Florian Briegel, Frank Kittmann, Juergen Berwein, Jan Trowitzsch, Matthieu Brangier

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84476H (2012) https://doi.org/10.1117/12.926304
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

LINC-NIRVANA is a near infrared interferometric imager with a pair of layer-oriented multi-conjugate adaptive optics systems (ground layer and high layer) for the Large Binocular Telescope. To prepare for the commissioning of LINC-NIRVANA, we have integrated the high layer wavefront sensor and its associated deformable mirror (a Xinetics-349) in a laboratory, located at Max Planck Institute for Astronomy, in Heidelberg, Germany. Together with a telescope simulator, which includes a rotating field and phase screens that introduce the effects of the atmosphere, we tested the acquisition of multiple guide stars, calibrating the system with the push-pull method, and characterizing the wavefront sensor together with the deformable mirror. We have closed the AO loop with up to 200 Zernike modes and with multiple guide stars. The AO correction demonstrated that uniform correction can be achieved in a large field of view. We report the current status and results of the experiment.

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Xianyu Zhang, Albert R. Conrad, Daniel Meschke, Thomas Bertram, Thomas M. Herbst, Carmelo Arcidiacono, Peter Bizenberger, Wolfgang Gaessler, Laura Schreiber, Roberto Ragazzoni, Martin Kuerster, Fulvio De Bonis, Lars Mohr, Jacopo Farinato, Emiliano Diolaiti, Hans-Walter Rix, Changhui Rao, Florian Briegel, Frank Kittmann, Juergen Berwein, Jan Trowitzsch, and Matthieu Brangier "The LINC-NIRVANA high layer wavefront sensor laboratory experiment: progress report", Proc. SPIE 8447, Adaptive Optics Systems III, 84476H (13 September 2012); https://doi.org/10.1117/12.926304

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