切伦科夫望远镜阵列原型 Schwarzschild-Couder 望远镜：光学系统调试
天体物理仪器与方法
2021-10-15 v1 高能天体物理现象
光学
摘要
一台原型 Schwarzschild-Couder 望远镜（pSCT）已在 Fred Lawrence Whipple 天文台建成，作为切伦科夫望远镜阵列天文台（CTAO）的中型望远镜候选方案。CTAO 目前正进入项目的早期建设阶段，一旦建成，由于其相较于当前一代地基伽马射线天文台 H.E.S.S.、MAGIC 和 VERITAS 显著提升的灵敏度、角分辨率和视场，将极大地改善多波长与多信使观测中的甚高能伽马射线探测能力。pSCT 采用双非球面镜设计，主镜口径 m，次镜口径 m，两者均为拼接式。为原型望远镜选择的 Schwarzschild-Couder（SC）光学系统实现了 度的宽视场，同时缩小了焦平面比例尺，使得基于硅光电倍增管（SiPM）的高分辨率相机（每个成像像素 mm/deg，共 像素）能以空前紧凑的尺寸（直径 m）实现。该望远镜的光学系统旨在消除球差和彗差，并最小化像散，从而相对于传统的单镜望远镜，在整个视场内根本性地改善离轴成像质量及由此带来的角分辨率。pSCT 快速且高成像分辨率的光学系统伴随着具有挑战性的亚毫米精度定制对准系统，该系统在 2020 年首次探测到蟹状星云之前，已成功展示了轴上点扩散函数（PSF）为 角分。本文报告了正在进行和未来的调试活动。
引用
@article{arxiv.2110.07463,
title = {Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array: Commissioning the Optical System},
author = {C. B. Adams and G. Ambrosi and M. Ambrosio and C. Aramo and P. I. Batista and W. Benbow and B. Bertucci and E. Bissaldi and M. Bitossi and A. Boiano and C. Bonavolontà and R. Bose and A. Brill and J. H. Buckley and R. A. Cameron and R. Canestrari and M. Capasso and M. Caprai and C. E. Covault and D. Depaoli and L. Di Venere and M. Errando and S. Fegan and Q. Feng and E. Fiandrini and A. Furniss and A. Gent and N. Giglietto and F. Giordano and E. Giro and R. Halliday and O. Hervet and T. B. Humensky and S. Incardona and M. Ionica and W. Jin and D. Kieda and F. Licciulli and S. Loporchio and G. Marsella and V. Masone and K. Meagher and T. Meures and B. A. W. Mode and S. A. I. Mognet and R. Mukherjee and D. Nieto and A. Okumura and N. Otte and F. R. Pantaleo and R. Paoletti and G. Pareschi and F. Di Pierro and E. Pueschel and D. Ribeiro and L. Riitano and E. Roache and J. Rousselle and A. Rugliancich and M. Santander and R. Shang and L. Stiaccini and L. P. Taylor and L. Tosti and G. Tovmassian and G. Tripodo and V. Vagelli and M. Valentino and J. Vandenbroucke and V. V. Vassiliev and D. A. Williams and P. Yu},
journal= {arXiv preprint arXiv:2110.07463},
year = {2021}
}