Developing Linear Dark-Field Control for Exoplanet Direct Imaging in the Laboratory and on Ground-based Telescopes

Autor:	Currie, Thayne, Pluzhnik, Eugene, Belikov, Ruslan, Guyon, Olivier
Rok vydání:	2019
Předmět:	Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Earth and Planetary Astrophysics Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	Imaging rocky planets in reflected light, a key focus of future NASA missions and ELTs, requires advanced wavefront control to maintain a deep, temporally correlated null of stellar halo at just several diffraction beam widths. We discuss development of Linear Dark Field Control (LDFC) to achieve this aim. We describe efforts to test spatial LDFC in a laboratory setting for the first time, using the Ames Coronagraph Experiment (ACE) testbed. Our preliminary results indicate that spatial LDFC is a promising method focal-plane wavefront control method capable of maintaining a static dark hole, at least at contrasts relevant for imaging mature planets with 30m-class telescopes. Comment: 10 pages, 6 figures, Proceedings of SPIE Optics+Photonics 2019
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1909.11664 Zobrazit plný text záznamu View this record from Arxiv