首页> 外文会议>Conference on Space Telescopes and Instrumentation: Optical, Infrared, and Millimeter >Speckle nulling for exoplanet detection with space-based coronagraphic telescopes
【24h】

Speckle nulling for exoplanet detection with space-based coronagraphic telescopes

机译:用基于空间的凝血性望远镜的Exoplanet检测斑点

获取原文

摘要

To detect Earth-like planets in the visible with a coronagraphic telescope, two major noise sources have to be overcome: the photon noise of the diffracted star light, and the speckle noise due to the star light scattered by instrumental defects. Coronagraphs tackle only the photon noise contribution. In order to decrease the speckle noise below the planet level, an active control of the wave front is required. We have developed analytical methods to measure and correct the speckle noise behind a coronagraph with a deformable mirror. In this paper, we summarize these methods, present numerical simulations, and discuss preliminary experimental results obtained with the High-Contrast Imaging Testbed at NASA's Jet Propulsion Laboratory.
机译:为了检测刺痛望远镜可见的地球状行星,必须克服两个主要噪声源:衍射星光的光子噪音,并且由于仪器缺陷散射的星光而散射的斑点噪声。昆虫神经刺痛仅是光子噪音贡献。为了减少行星级以下的散斑噪声,需要对波前的主动控制。我们已经开发了分析方法来测量和校正具有可变形镜子后面的凝血性噪音。在本文中,我们总结了这些方法,现有数值模拟,并讨论了NASA喷射推进实验室的高对比度成像获得的初步实验结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号