A High-contrast Imaging Algorithm: Optimized Image Rotation and Subtraction

• Published in: arXiv.org
• Main Authors: Dou, Jiangpei, Ren, Deqing, Zhao, Gang, Zhang, Xi, Chen, Rui, Zhu, Yongtian
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 10.02.2015
• Subjects: Algorithms; Extrasolar planets; Image contrast; Image rotation; Optimization; Physics - Earth and Planetary Astrophysics; Physics - Instrumentation and Methods for Astrophysics; Rotation; Signal to noise ratio; Subtraction

Image Rotation and Subtraction (IRS) is a high-contrast imaging technique which can be used to suppress the speckles noise and facilitate the direct detection of exoplanets. IRS is different from Angular Differential Imaging (ADI), in which it will subtract a copy of the image with 180 degrees rotat...