Abstract—The article provides a brief description of the software package DECH for processing and analysis of astronomical spectra. DECH supports all stages of processing and analysis of spectral data, including image preprocessing, spectra extraction (including those with a variable tilted slit), wavelength calibration by a two-dimensional polynomial, continuum normalization (manual or automatic), measurement of equivalent widths and radial velocities in various ways, cross-correlation analysis, etc. The DECH software package is actively used by astronomers from different countries and continues to be improved. In particular, utilities for processing and analysis of data from the high-resolution fiber-feed echelle spectrograph installed at 6-m telescope of Special Astrophysical Observatory of Russian Academy of Sciences were added in the latest version. Software provides high-precision measurements of radial velocities, including those for detection of extraterrestrial planets.

摘要—本文简要介绍了用于处理和分析天文光谱的 DECH 软件包。DECH 支持光谱数据处理和分析的所有阶段，包括图像预处理、光谱提取（包括具有可变倾斜狭缝的光谱提取）、二维多项式波长校准、连续谱归一化（手动或自动）、等效宽度测量和各种方式的径向速度、互相关分析等。DECH 软件包被不同国家的天文学家积极使用，并不断得到改进。特别是，最新版本增加了用于处理和分析安装在俄罗斯科学院特殊天体物理天文台 6 米望远镜上的高分辨率光纤馈线阶梯光谱仪数据的实用程序。