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一、引言太阳塔的成象质量主要由成象镜和各平面反射镜决定。南京大学太阳塔成象镜的有效口径D_3=330毫米,由此可知,该塔成象系统的理论分辨本领应为0“.42。实际使用时,由于主光线对成象镜为编轴入射以及安装各镜时引起的微小形变,致使成象系统的综合象差增加。由于天光和仪器散射光较大,也会影响太阳象的质量并降低分辨本领。因此,在实际使用情况下,测试成象系统的成象质量,对于掌握仪器的基本性能,总结设计和安装调试的经验十分必要。
I. INTRODUCTION The imaging quality of the solar tower is mainly determined by the imaging mirror and the plane mirrors. Nanjing University, the effective diameter of the sun tower imaging aperture D_3 = 330 mm, we can see that the tower imaging system theoretical resolution should be 0 ”42. In actual use, the main light of the imaging mirror for the shaft Incident and installation of the mirror caused by the small deformation, resulting in the imaging system to increase the overall aberration due to the sky and the instrument scattering light will also affect the quality of the sun and reduce the resolution skills.Therefore, in actual use, Testing imaging system imaging quality, to master the basic performance of the instrument, summed up the design and installation of debugging experience is necessary.