The double pyramid wavefront sensor for LBT

Details The double pyramid wavefront sensor for LBT The double pyramid wavefront sensor for LBT

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7015e.142t&link_type=abstract

Adaptive Optics Systems. Edited by Hubin, Norbert; Max, Claire E.; Wizinowich, Peter L. Proceedings of the SPIE, Volume 7015

Physics

Optics

1

Scientific paper

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.

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