BFOSC长缝光谱自动处理软件  

BFOSC Long-slit Spectrum Automatic Extraction Pipeline

作　　者：宋得阳 张君波[4,5] 王靓 Song Deyang;Zhang Junbo;Wang Liang(Nanjing Institute of Astronomical Optics&Technology,Chinese Academy of Sciences,Nanjing 210042,China;CAS Key Laboratory of Astronomical Optics&Technology,Nanjing Institute of Astronomical Optics&Technology,Nanjing 210042,China;University of Chinese Academy of Sciences,Beijing 100049,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]中国科学院南京天文光学技术研究所,江苏南京210042 [2]中国科学院天文光学技术重点实验室(南京天文光学技术研究所),江苏南京210042 [3]中国科学院大学,北京100049 [4]中国科学院国家天文台,北京100101 [5]中国科学院光学天文重点实验室(国家天文台),北京100101

出　　处：《天文研究与技术》2023年第6期591-599,共9页Astronomical Research & Technology

基　　金：国家自然科学基金(U2031144)资助.

摘　　要：在天文观测中,长缝光谱仪是一种常用的光谱观测设备。国家天文台兴隆观测基地2.16 m望远镜搭载的北京暗天体摄谱仪(Beijing Faint Object Spectrograph and Camera,BFOSC)的长缝光谱模式应用广泛,但没有配备专用的数据处理软件,通常用户观测后采用IRAF(Image Reduction and Analysis Facility)软件利用交互方式处理。介绍了一款针对BFOSC长缝光谱的自动化数据处理软件,数据处理过程包括本底(bias)和平场(flat)改正、背景改正、抽取光谱和波长定标等,展示了对实测数据进行处理的结果,并与IRAF软件处理的结果进行了对比。该软件在完成所有光谱处理必需步骤的基础上实现了自动化运行,并采用优化抽谱方法,能够自动扣除大部分宇宙线,保证了高精度的输出结果。In astronomical observation,the long-slit spectrometer is a kind of spectral observation equipment commonly used.The long-slit spectral mode of the Beijing Faint Object Spectrograph and Camera(BFOSC)mounted on the 2.16 m telescope of the Xinglong Observatory,National Astronomical Observatories,Chinese Academy of Sciences,is widely used,but it is not equipped with a specific data processing software.After observation,users usually run IRAF software interactively to obtain the final data product.This paper introduces an automatic data processing software for BFOSC long slit spectrum.It includes bias and flat-field correction,background subtraction,spectrum extraction and wavelength calibration.We describe the processing method and the flow of the program,and present the results of processing with the observed data,and compare them with the IRAF results.Our software realizes automatic operation on the basis of completing all the necessary steps of spectrum processing,and adopts the optimal extraction method,which automatically deducts most cosmic rays and ensures the high precision of output results.

关 键 词：长缝光谱 优化抽谱方法 自动处理程序 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] P114[自动化与计算机技术—计算机科学与技术]