Solar Optical Telescope

The Solar Optical Telescope (SOT) is a diffraction-limited, visible light telescope that provides the unparalleled combination of uninterrupted temporal coverage (free from atmospheric seeing, weather, and nighttime), high cadence (as short as 1.6s), and 0.2″ spatial resolution over a significant 328″×164″ field of view (FOV). SOT is comprised of the Focal Plane Package (FPP), which is fed by the 0.5-meter Optical Telescope Assembly (OTA). The FPP consists of the Spectro-Polarimeter (SP) and (up to 2016) the Narrowband and Broadband Filter Imagers (NFI and BFI) that comprise the FilterGraph (FG). The combined SOT system allows measurements of the vector magnetic field in the photosphere with unprecedented sensitivity (10× better than previous instrumentation), while simultaneously observing the effects of these fields on the dynamics of both the photosphere and chromosphere.

太阳光学望远镜（SOT）是一款衍射极限的可见光望远镜，它提供了无与伦比的连续时间覆盖（免受大气视宁度、天气和夜间影响）、高帧率（短至1.6秒）以及0.2角秒的空间分辨率，覆盖了显著的328英寸×164英寸视场（FOV）。SOT由焦平面组件（FPP）组成，该组件由0.5米的光学望远镜组件（OTA）提供数据。FPP包括光谱偏振计（SP）以及（至2016年）窄带和宽带滤光成像仪（NFI和BFI），它们构成了滤光图（FG）。综合SOT系统使得在光球层进行矢量磁场的测量成为可能，其灵敏度（比之前的仪器提高10倍），同时还能观测到这些磁场对光球和色球动力学的影响。