When viewing extended objects, the apparent brightness seen in the eyepiece is a function only of aperture and magnification, it is not related to focal ratio.
当观察扩展光源时，目镜中所看到的亮度只跟孔径和放大率有关，它跟焦比并没有关系。
The influence of imaging magnification and the ratio of object dimension to object-to-collimator distance on imaging efficiency was investigated as well.
最后还分析了放大倍数以及物体尺寸相对于物距的大小对探测效率的影响。
Fixed-point scaling and interpolation can eliminate the influence of optical magnification ratio varying with position variation of measuring points is obtained, 2.
双光路方案或标准点校准方法可以消除光线路径随环境温度、湿度变化而引入的误差；
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