Perception of Misalignment States for Sky Survey Telescopes with the Digital Twin and the Deep Neural Networks ...

• Main Authors: Zhang, Miao, Jia, Peng, Li, Zhengyang, Xiang, Wennan, Lv, Jiameng, Sun, Rui
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: arXiv 2023
• Subjects: Instrumentation and Methods for Astrophysics astro-ph.IM; Astrophysics of Galaxies astro-ph.GA; Solar and Stellar Astrophysics astro-ph.SR; Computer Vision and Pattern Recognition cs.CV; Optics physics.optics; FOS Physical sciences; FOS Computer and information sciences; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.48550/arxiv.2311.18214; https://arxiv.org/abs/2311.18214

Sky survey telescopes play a critical role in modern astronomy, but misalignment of their optical elements can introduce significant variations in point spread functions, leading to reduced data quality. To address this, we need a method to obtain misalignment states, aiding in the reconstruction of accurate point spread functions for data processing methods or facilitating adjustments of optical components for improved image quality. Since sky survey telescopes consist of many optical elements, they result in a vast array of potential misalignment states, some of which are intricately coupled, posing detection challenges. However, by continuously adjusting the misalignment states of optical elements, we can disentangle coupled states. Based on this principle, we propose a deep neural network to extract misalignment states from continuously varying point spread functions in different field of views. To ensure sufficient and diverse training data, we recommend employing a digital twin to obtain data for ... : The aforementioned submission has been accepted by Optics Express. We kindly request any feedback or comments to be directed to the corresponding author, Peng Jia ([e-mail]), or the second corresponding author, Zhengyang Li ([e-mail]). Please note that Zhengyang is currently stationed in the South Antarctica and will not be available until after February 1st, 2024 ...