高分辨率光纤光谱数据自动化处理及光谱仪稳定性研究

科学研究对高分辨率光谱数据的精度要求越来越高，随着山东大学威海天文台光纤引导高分辨率阶梯光栅光谱仪的投入使用，观测获取的光谱数据越来越多。IRAF、MIDAS对光谱数据的自动化处理存在一些不足，国际上基本每台光谱仪都会研制一套自己的自动化数据处理程序，国内将会不断有新的光纤光谱仪投入使用，因此非常有必要对高分辨率光谱数据的自动化处理进行深入研究。本项目将研究高分辨率光谱数据处理中的级次追迹、背景改正、一维谱优化抽取、波长定标等数据处理算法，应用以前优秀的算法，加入一些新的方法和算法，提高数据处理的精度和自动化程度，并用IDL语言实现一套自动化数据处理程序。实现的自动化处理程序可以根据用户需要更改任何部分的算法，具有很强的可移植性。应用实现的自动化数据处理程序，我们将研究温度、压力对光谱仪观测稳定性的影响，研究光谱仪的视向速度观测精度，通过研究结果改善光谱仪的性能，提高观测精度。

Science research needs more and more accurate high resolution spectra data. With the using of the fiber-fed high resolution echelle spectrograph of Weihai observatory of Shandong university, more and more spectra data will be obtained. IRAF and MIDAS have several disadvantages for spectra data automatic reduction. Almost every international spectrograph has its own developed automatic data reduction program, at the same time more and more fiber-fed spectrograph will be in commission in our country, so it is necessary to make a intensive study on automatic data reduction for high resolution spectra. We will research the order tracing, background correction, optimal extraction, wavelength calibration and so on in this project. New methods and new algorithms will be added based on previous excellent algorithms. The accuracy and automation of the spectra reduction will be improved. Finally one IDL package will be developed for automatic high resolution spectra reduction. Every algorithm in this package could be modified by your own purpose, and this package could be adopted easily. The effects of temperature and pressure on the spectrograph stability and the radial velocity measurement accuracy will be researched by using this developed package. The research results could be used to improve the accuracy and performance of the spectrograph.