FITSIO软件包的简介及应用举例  

THE INTRODUCTION TO FITSIO AND ITS APPLIED EXAMPLE

作　　者：李化南[1] 肖泉宝[1] 邵正义[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《中国科学院上海天文台年刊》2005年第1期119-124,共6页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

基　　金：国家自然科学基金(No.10273016;No.10333060)项目资助课题。

摘　　要：简单介绍了用于读写FITS格式文件的FITSIO软件包的主要功能和特点。利用该软件包对 SDSS(Sloan Digital Sky Survey)数据中椭圆星系NGC4044和漩涡星系NGC5227的g,r,i三个波段的 FITS图像文件进行了重新读写,使这三个波段的FITS文件中天体的坐标完全对应。并以此合成了“真彩图”和“颜色分布图”,可以清楚地看出这些星系不同位置处颜色的变化。FITSIO package, mainly used to deal with FITS data, is introduced in this paper. By using subroutines in FITSIO, SDSS images of NGC4044 and NGC5227 in g, r, i bands are rebuilt after matching their pixels in a common celestial coordinate system. Then, RGB images of these 2 galaxies, as well as their color distributions are plotted, which clearly showed the color variation of stellar components depending on their locations.

关 键 词：数据格式 数据处理 星系 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]