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Proceedings Paper

Pupil rotation compensation for LINC-NIRVANA
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Paper Abstract

The interferometric imager LINC-NIRVANA will use pyramid wavefront-sensors for multi-conjugated adaptive optics (MCAO). A derotator will produce a static field on the pyramids, but a rotating pupil image on the CCD. For long exposure times, we have to take into account this effect to command the deformable mirror properly by changing the command matrix on the fly. We reproduce in a laboratory set-up this configuration to test different methods for compensating for this effect. We present the results obtained and the optimal solution we have selected.

Paper Details

Date Published: 13 September 2012
PDF: 4 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84472U (13 September 2012); doi: 10.1117/12.927121
Show Author Affiliations
Matthieu Brangier, Max-Planck-Institut für Astronomie (Germany)
Albert R. Conrad, Max-Planck-Institut für Astronomie (Germany)
Thomas Bertram, Max-Planck-Institut für Astronomie (Germany)
Xianyu Zhang, Max-Planck-Institut für Astronomie (Germany)
Juergen Berwein, Max-Planck-Institut für Astronomie (Germany)
Florian Briegel, Max-Planck-Institut für Astronomie (Germany)
Thomas M. Herbst, Max-Planck-Institut für Astronomie (Germany)
Roberto Ragazzoni, INAF - Osservatorio Astronomico di Padova (Italy)

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

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