Les effets optiques de la turbulence atmosphérique dans les images astronomiques

Autor: Bonneau, Daniel

Publikováno v: Comptes Rendus. Physique, Vol 23, Iss S1, Pp 269-291 (2023)

The often blurry appearance of astronomical images at a telescope focus is attributed to atmospheric agitation.The study of the light propagation through the turbulent Earth atmosphere has made it possible to understand the existence of optical turbu

Externí odkaz: https://doaj.org/article/52722137766149c9a0dd8008373013cf

Coronagraphic phase diversity through residual turbulence: performance study and experimental validation

Autor: Arthur Vigan, Laurent M. Mugnier, Olivier Herscovici-Schiller, Kjetil Dohlen, Jean-François Sauvage

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2019, 488 (3), pp.4307-4316. ⟨10.1093/mnras/stz1986⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 488 (3), pp.4307-4316. ⟨10.1093/mnras/stz1986⟩

Quasi-static aberrations in coronagraphic systems are the ultimate limitation to the capabilities of exoplanet imagers both ground-based and space-based. These aberrations - which can be due to various causes such as optics alignment or moving optica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db8176874edb4fe7d8be532e0015f1af
https://doi.org/10.1093/mnras/stz1986

First error budget of a deployable CubeSat telescope

Autor: Sébastien Vievard, Jean-François Sauvage, Marie-Thérèse Velluet, Aurélie Bonnefois, Carlos Correia, Noah Schwartz, Iva Laginja, J. C. Krapez, Thierry Fusco, V. Michau, Marc Ferrari, Frédéric Cassaing

Publikováno v: Proceedings of SPIE
SPIE Astronomical Telescopes + Instrumentation 2020
SPIE Astronomical Telescopes + Instrumentation 2020, Dec 2020, Online Only, France. pp.1144330, ⟨10.1117/12.2561697⟩

International audience; The volume available on-board small satellites limit the optical aperture to a few centimetres, which limits the Ground- Sampling Distance (GSD) in the visible to approximately 3 m at 500 km. We present a performance analysis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bd4407890f0704f49163b24a12c39a5
https://doi.org/10.1117/12.2561697

Comparison of focal plane wavefront sensing technics dedicated to space missions for the direct imaging and spectroscopy of exoplanets

Autor: Potier, Axel

Publikováno v: Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]. Paris Sciences et Lettres; Observatoire de Paris – LESIA, 2020. Français

Understanding the formation, the evolution and the diversity of extrasolar planets is an important purpose in modern astrophysics. More than 4,000 objects have been discovered since the first discovery of an exoplanet orbiting a solar-type star in 19

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______212::eca45d08c75e448b63851b960a827eec
https://tel.archives-ouvertes.fr/tel-03065844

Kernel. Application and scientific potentials of full pupil interferometry : Statistical analysis of kernel observables

Autor: Ceau, Alban

Publikováno v: Instrumentation and Methods for Astrophysic [astro-ph.IM]. Université Côte d'Azur, 2020. English. ⟨NNT : 2020COAZ4035⟩

High resolution observations of the sky are made using techniques that fall into two wide categories: imaging, and interferometry. Imaging consists in estimating the spatial intensity distribution of a source by forming an image of this source of a p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______212::d30fad1ae4dfd9ba988e6c2cd6eaa75a
https://tel.archives-ouvertes.fr/tel-03135268/file/2020COAZ4035.pdf