单星模拟器的调校准确度分析

Accuracy Analysis of Adjusting Single Star Simulator

介绍了五棱镜法调校单星模拟器的原理,并给出了一种判断星点板位于焦前、焦后以及离焦量的简单有效方法.通过详细分析影响调校准确度的主要误差源,得出了五棱镜90°转向误差不影响平行度调校准确度的结论,确立了平移台导轨准确度和五棱镜法调校准确度之间的定量关系式.实验证明,用五棱镜法调校单星模拟器是可行的,能满足±2″的平行度误差要求.

The principle of adjusting single star simulator with Penta Prism method was introduced. A new simple and effective method of judging whether the focus glass be in focus or not was given. A conclusion that pentagonal prism 90° swerving error does not affect the adjusting precision was drown through analyzing lhe main error sources in detail. And the function of the translational plane precision and changed scalar of ray direction was established. It was proved that it was feasible that adjusting single star simulator whh Penta Prism method. This method can meet the demand of paraliel error of ± 2 arcsec.