On-sky correction of non-common path aberration with the pyramid wavefront sensor

S. Esposito, A. Puglisi, E. Pinna, G. Agapito, F. Quiros-Pacheco, J.P. Véran, G. Herriot.

A&A, Forthcoming articleReceived: 31 October 2019 / Accepted: 04 March 2020


The paper deals with with the on-sky performance of the pyramid wavefront sensor-based Adaptive Optics (AO) systems. These
wavefront sensors are of great importance, being used in all first light AO systems of the ELTs (E-ELT, GMT, and TMT), currently
in design phase. In particular, non-common path aberrations (NCPAs) are a critical issue encountered when using an AO system to
produce corrected images in an associated astronomical instrument. The AO wavefront sensor (WFS)…. read more