The general theories behind echelle and its applications in astronomy are briefed, and the differences between echelle spectrograph and plane grating spectrograph are analyzed and compared.
简述阶梯光栅的基本原理和在天文学中的应用，分析并比较了阶梯光栅光谱仪与普通平面闪耀光栅光谱仪的区别。
To improve system resolution and image quality, the characteristics of echelle grating spectrography were introduced and a method of fixing and checking for the optical system of the echelle spectrograph was researched.
为提高系统分辨率，保证成像质量，研究了中阶梯光栅光谱仪光学系统的安装及检测方法。
Optical design of high resolution echelle spectrograph
高分辨率阶梯光栅光谱仪的光学设计
Secondly, according to the needs of quantitative experiments, a calibration method for the grating response of the echelle spectrograph was presented. It can give the real distributed relationship of the spectra-line intensity in different wavelength with calibration and offer the realistic basis for spectrum quantitative analysis.
其次，本文根据定量化实验的需要，有针对性地提出了一种阶梯光栅光谱仪光栅效应系数的校准方法，校准后可以给出不同波长信号强度的真实分布关系，给光谱定量分析提供了现实依据。
The high resolution, high signal to noise ratio spectra of a sample of mildly metal-poor stars were obtained with the Coude Echelle Spectrograph attached to the 2.16m telescope at Beijing Astronomical Observatory (Xinglong, China).
利用北京天文台兴隆观测基地2.16米望远镜的折轴阶梯光栅摄谱仪，获得了一批中等贫金属星的高分辨率、高信噪比光谱。