pyZELDA

Introduction

This repository provides analysis code for Zernike wavefront sensors in high-contrast imaging applications. ZELDA stands for Zernike sensor for Extremely Low-level Differential Aberration (N'Diaye et al. 2013). It is also the name of the Zernike wavefront sensor implemented in the VLT/SPHERE (Beuzit et al. 2019) instrument.

The formalism of the Zernike wavefront sensor and the demonstration of its capabilities in the VLT/SPHERE instrument are presented in the following papers:

• N'Diaye, Dohlen, Fusco & Paul, 2013, A&A, 555, A94
• N'Diaye, Vigan, Dohlen et al., 2016, A&A, 592, A79
• Vigan, N'Diaye, Dohlen et al., 2019, A&A, 629, A11

Requirements

The package relies on usual packages for data science and astronomy: numpy, scipy, matplotlib and astropy.

Installation

The easiest is to install pyzelda using pip:

pip install pyzelda

Otherwise your can download the current repository and install the package manually:

cd pyZELDA-master/
python setup.py install

Citation

If you use this software, or part it, please reference the code from the Astrophysics Source Code Library (ASCL):

• Vigan & N'Diaye, 2018, ascl:1806.003

Authors and contributors

• Arthur Vigan, arthur.vigan@lam.fr
• Mamadou N'Diaye, mamadou.ndiaye@oca.eu
• Raphaël Pourcelot, raphael.pourcelot@oca.eu