arcminute
At that distance, this 30 arcminute field of view spans almost 50 light-years.
根据这个距离,这张30角分的影像区域覆盖大约50光年。
arcminute
弧分度
arcminute
At that distance, this 30 arcminute field of view spans almost 50 light-years.
根据这个距离,这张30角分的影像区域覆盖大约50光年。
arcminute
弧分度