双筒望远镜
The field glasses adjust with a screw. 双筒望远镜是用一个旋钮调节焦距的。
This telephoto image captures both bright Saturn and greenish Lulin in the same field in a scene not too different from binocular views. 这张望远镜影像同时捕捉到了明亮的土星以及发出绿色光芒的鹿林彗星，用双筒望远镜不难发现这颗彗星。
