Singh M
Appl Opt. 1978 Jun 1;17(11):1815-23. doi: 10.1364/AO.17.001815.
Three types of new monochromators based on the new mounting of concave grating by Singh-Majumdar (SM) are described. These monochromators are very compact and simple in operation, fulfilling the requirements of a monochromator in a space telescope in the VUV region. It is found theoretically (by geometric optics theory of concave diffraction grating given by Beutler and modified by Namioka, and by a ray tracing procedure by drawing spot diagrams at different wavelengths) as well as experimentally in the laboratory by setting up the monochromator and taking sample spectra photographically that the spectral images have very little aberration as compared to other monochromators in the VUV region. The improvement obtained is three times.
介绍了基于辛格 - 马宗达（Singh-Majumdar，SM）对凹面光栅的新安装方式的三种新型单色仪。这些单色仪非常紧凑且操作简单，满足了空间望远镜在真空紫外（VUV）区域对单色仪的要求。理论上（通过由博伊特勒给出并经并木修改的凹面衍射光栅的几何光学理论，以及通过绘制不同波长下的光斑图的光线追迹程序）以及在实验室中通过搭建单色仪并拍摄样品光谱进行实验发现，与VUV区域的其他单色仪相比，光谱图像的像差非常小。所获得的改进是三倍。
