Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Mugnier, Laurent M."'
Autor:
Soummer, Rémi, Por, Emiel H., Pourcelot, Raphaël, Redmond, Susan, Laginja, Iva, Will, Scott D., Perrin, Marshall D., Pueyo, Laurent, Sahoo, Ananya, Petrone, Peter, Brooks, Keira J., Fox, Rachel, Klein, Alex, Nickson, Bryony, Comeau, Thomas, Ferrari, Marc, Gontrum, Rob, Hagopian, John, Leboulleux, Lucie, Leongomez, Dan, Lugten, Joe, Mugnier, Laurent M., N'Diaye, Mamadou, Nguyen, Meiji, Noss, James, Sauvage, Jean-François, Scott, Nathan, Sivaramakrishnan, Anand, Subedi, Hari B., Weinstock, Sam
We present recent laboratory results demonstrating high-contrast coronagraphy for the future space-based large IR/Optical/Ultraviolet telescope recommended by the Decadal Survey. The High-contrast Imager for Complex Aperture Telescopes (HiCAT) testbe
Externí odkaz:
http://arxiv.org/abs/2409.13026
Autor:
Gutierrez, Yann, Mazoyer, Johan, Herscovici-Schiller, Olivier, Mugnier, Laurent M., Abeloos, Baptiste, Laginja, Iva
Exoplanet imaging uses coronagraphs to block out the bright light from a star, allowing astronomers to observe the much fainter light from planets orbiting the star. However, these instruments are heavily impacted by small wavefront aberrations and r
Externí odkaz:
http://arxiv.org/abs/2407.18733
Autor:
Gutierrez, Yann, Mazoyer, Johan, Mugnier, Laurent M., Herscovici-Schiller, Olivier, Abeloos, Baptiste
Optical aberrations prevent telescopes from reaching their theoretical diffraction limit. Once estimated, these aberrations can be compensated for using deformable mirrors in a closed loop. Focal plane wavefront sensing enables the estimation of the
Externí odkaz:
http://arxiv.org/abs/2406.18143
Publikováno v:
In Optics and Lasers in Engineering January 2025 184 Part 1
Autor:
Sauvage, Chloé, Robert, Clélia, Mugnier, Laurent M., Conan, Jean-Marc, Cohard, Jean-Martial, Nguyen, Khanh Linh, Irvine, Mark, Lagouarde, Jean-Pierre
CO-SLIDAR is a very promising technique for the metrology of near ground $C_n^2$ profiles. It exploits both phase and scintillation measurements obtained with a dedicated wavefront sensor and allows profiling on the full line of sight between pupil a
Externí odkaz:
http://arxiv.org/abs/2111.08003
Autor:
Laginja, Iva, Sauvage, Jean-François, Mugnier, Laurent M., Pueyo, Laurent, Perrin, Marshall D., Noss, James, Will, Scott D., Brooks, Keira J., Por, Emiel H., Petrone, Peter, Soummer, Rémi
Publikováno v:
A&A 658, A84 (2022)
Context: The detection and characterization of Earth-like exoplanets (exoEarths) from space requires exquisite wavefront stability at contrast levels of $10^{-10}$. On segmented telescopes in particular, aberrations induced by cophasing errors lead t
Externí odkaz:
http://arxiv.org/abs/2110.14685
Autor:
Laginja, Iva, Soummer, Remi, Mugnier, Laurent M., Pueyo, Laurent, Sauvage, Jean-Francois, Leboulleux, Lucie, Coyle, Laura, Knight, J. Scott
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems 7(1), 015004 (30 March 2021)
This paper introduces an analytical method to calculate segment-level wavefront error tolerances in order to enable the detection of faint extra-solar planets using segmented telescopes in space. This study provides a full treatment of spatially unco
Externí odkaz:
http://arxiv.org/abs/2103.06288
Autor:
Vievard, Sebastien, Bos, Steven P., Cassaing, Frederic, Currie, Thayne, Deo, Vincent, Guyon, Olivier, Jovanovic, Nemanja, Keller, Christoph, Lamb, Masen, Lopez, Coline, Lozi, Julien, Martinache, Frantz, Miller, Kelsey, Montmerle-Bonnefois, Aurelie, Mugnier, Laurent M., N'Diaye, Mamadou, Norris, Barnaby, Sahoo, Ananya, Sauvage, Jean-François, Skaf, Nour, Snik, Frans, Wilby, Michael J., Wong, Alisson
Focal plane wavefront sensing is an elegant solution for wavefront sensing since near-focal images of any source taken by a detector show distortions in the presence of aberrations. Non-Common Path Aberrations and the Low Wind Effect both have the ab
Externí odkaz:
http://arxiv.org/abs/2012.12417
Autor:
Laginja, Iva, Soummer, Remi, Mugnier, Laurent M., Pueyo, Laurent, Sauvage, Jean-Francois, Leboulleux, Lucie, Coyle, Laura, Knight, J. Scott, Perrin, Marshall D., Will, Scott D., Noss, James, Brooks, Keira J., Fowler, Julia
Publikováno v:
Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 114433J (13 December 2020)
This paper presents the setup for empirical validations of the Pair-based Analytical model for Segmented Telescope Imaging from Space (PASTIS) tolerancing model for segmented coronagraphy. We show the hardware configuration of the High-contrast image
Externí odkaz:
http://arxiv.org/abs/2012.07425
Autor:
Leboulleux, Lucie, Sauvage, Jean-François, Soummer, Rémi, Fusco, Thierry, Pueyo, Laurent, Mugnier, Laurent M., Moriarty, Christopher, Petrone, Peter, Brooks, Keira
Direct imaging of Earth-like planets from space requires dedicated observatories, combining large segmented apertures with instruments and techniques such as coronagraphs, wavefront sensors, and wavefront control in order to reach the high contrast o
Externí odkaz:
http://arxiv.org/abs/2006.14494