low-light sextant

例句：

1. 1. This low-light sextant is perfect for night photography.
   这个低光望远镜非常适合夜间摄影。
2. 2. The astronomer used a low-light sextant to study the stars.
   天文学家使用低光望远镜来研究星星。
3. 3. The scientist developed a new low-light sextant that can detect even the faintest objects.
   科学家开发了一种新型低光望远镜，可以探测到最微弱的对象。