The effect of integral time on aperturefunction in linear detector push-broom imaging system is analyzed.
分析了线列推扫成像中，积分时间对采样孔径函数的影响。
2
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。
3
The brightness of stars (point sources) is only a function of telescope aperture-the larger the aperture, the brighter the images.