从本质上讲，目镜的视场光阑与望远镜有线性关系。
Essentially, the field stop of the eyepiece encompasses a linear field of view from the telescope.
视场光阑是安装在目镜镜筒内的金属的圆环用来限定范围的大小。
The field stop is the metal ring inside the eyepiece barrel that limits the field size.
为了减少视场倾斜，提高成像质量，必须确定掠入射角和确定光阑的位置。
In order to reduce the inclination of the field of view (FOV) and improve the image quality, it is important to determine the grazing incident Angle and the position of stops.
为了减少视场倾斜，提高成像质量，必须确定掠入射角和确定光阑的位置。
In order to reduce the inclination of the field of view (FOV) and improve the image quality, it is important to determine the grazing incident Angle and the position of stops.
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