一种空间超紫外望远镜在轨指向标定方法

A new method of guiding calibration of extreme ultraviolet radiation telescope on space orbit

介绍了一种不同波段的超紫外望远镜在轨指向的标定方法。此方法利用四个波段(13.0,17.1,19.5,30.4nm)的超紫外望远镜均有较高的光谱响应和能够对较强的太阳辐射光谱成像的特点,根据由不同的望远镜所获得的太阳的四个图像的变化,计算出了四个望远镜间的指向偏差。根据四个不同波段的超紫外望远镜的光学性能和太阳紫外辐射谱线的亮度优化出了具体的太阳辐射谱线,并对所选用的标定谱线的可行性进行了分析。该方法的在轨标定精度为0.1″。

A new method of the guiding calibration of extreme ultraviolet radiation(EUV) telescope on space orbit is presented. The guiding errors are given out by calculating different imaging position changes between the four EUV telescopes. The position changes of strong solar emission pictures obtained by four EUV telescopes are exactly measured. The guiding precision of this method is 0.1 arcsecond.