空间环境温度的变化对航天相机光学系统成像质量的影响很大。分析了几种不同的温度分布形式,即均匀温度变化、温度梯度变化、径向温度梯度变化、周向温度梯度变化、轴向温度梯度变化和主、次镜间轴向温差的变化对光学系统成像质量的影响,并给出了相应的分析方法。 The change of space environment temperature has great influence on the imaging quality of space camera optical system. Several different temperature distributions were analyzed, ie, uniform temperature change, temperature gradient change, radial temperature gradient change, circumferential temperature gradient change, axial temperature gradient change and changes in axial temperature difference between primary and secondary mirrors. Image quality, and gives the corresponding analysis method.