论文标题
在斑点变化下进行高对比度成像的斑点区域无效的连贯差分成像（CDI-SAN）方法
The coherent differential imaging on speckle area nulling (CDI-SAN) method for high-contrast imaging under speckle variation
论文作者
论文摘要
差分成像是一种获得高对比度的后处理方法，通常用于系外行星搜索。开发了斑点区域无效（CDI-SAN）方法的相干差分成像，以检测位于宿主恒星残留斑点下的微弱系外行星。它比与五个形状的恒星斑点变化更快地利用图像采集，反复反复地同步。通过将五个图像中每个图像和平方差的唯一集成值用于长时间的观测，可以将外部球星的光与恒星光分离。在适当条件下，可实现的对比度几乎达到了残留斑点强度的光子噪声极限。 CDI-SAN可以应用于地面和太空望远镜。
Differential imaging is a postprocessing method to obtain high contrast, often used for exoplanet searches. The coherent differential imaging on speckle area nulling (CDI-SAN) method was developed to detect a faint exoplanet lying beneath residual speckles of a host star. It utilizes image acquisitions faster than the stellar speckle variation synchronized with five shapes of a deformable mirror repeatedly. By using the only the integrated values of each of the five images and square differences for a long interval of observations, the light of the exoplanet could be separated from the stellar light. The achievable contrast would reach to almost the photon-noise limit of the residual speckle intensities under appropriate conditions. The CDI-SAN can be applied to both ground-based and space telescopes.
