The double pyramid wavefront sensor for LBT

A. Tozzi; P. Stefanini; E. Pinna; S. Esposito

doi:10.1117/12.789311

15 July 2008 The double pyramid wavefront sensor for LBT

A. Tozzi, P. Stefanini, E. Pinna, S. Esposito

Proceedings Volume 7015, Adaptive Optics Systems; 701558 (2008) https://doi.org/10.1117/12.789311
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The wavefront sensor (WFS) for the Large Binocular Telescope is based on a pyramid sensor with a maximum sampling of 30x30 subapertures. In particular the pyramid used in the WFS is a Double Pyramid (DP). This for two reasons: the first is that so doing it is possible to have pyramids with a base angle greeter than the angle of a single pyramid so that athe polishing process is made easier. The second is that it is possible to reduce the chromatic effects that the use of a single pyramid introduces. This enables to work with a larger wavelenght range.

Citation Download Citation

A. Tozzi, P. Stefanini, E. Pinna, and S. Esposito "The double pyramid wavefront sensor for LBT", Proc. SPIE 7015, Adaptive Optics Systems, 701558 (15 July 2008); https://doi.org/10.1117/12.789311

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