Open Access
Issue |
2010
|
|
---|---|---|
Article Number | 05017 | |
Number of page(s) | 5 | |
Section | Wave front sensing | |
DOI | https://doi.org/10.1051/ao4elt/201005017 | |
Published online | 24 February 2010 |
1st AO4ELT conference, 05017 (2010)
Pyramid wave-front sensing with a laser guide star for an ELT
Laboratoire d’Astrophysique de Marseille. Observatoire Astronomique de Marseille
Provence. Université de Provence
a e-mail: brice.leroux@oamp.fr
We present a study of the behaviour and performance of the pyramid WFS when the guide star is a laser GS on an ELT. Several aspects of a laser based wave front sensing are considered, as the fact that the considered object is extended, but also the consequences of the width of the sodium layer on a pyramid measurement. Simulation results are presented.
© Owned by the authors, published by EDP Sciences, 2010