PDS在天体测量中的应用技术──Ⅲ.星像粗略坐标的测量  

APPLIED TECHNIQUES OF PDS IN PHOTOGRAPHIC ASTROMETRY-Ⅲ.MEASUREMENT OF ROUGH COORDINATES FOR STAR IMAGES

作　　者：王家骥 

出　　处：《中国科学院上海天文台年刊》1994年第15期92-97,共6页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

基　　金：国家自然科学基金!<高精度天文参考系的研究>资助

摘　　要：本文介绍了作者为用PDS获得显像粗略坐标而编制的两个PDP－11FORTRAN程序及其所用处理方法，并且给出了一个应用实例。结果表明，这种处理方法适合于在国内目前的PDS系统上应用，对于星像比较密集的底片，收益十分明显。The high-precision measurement of astrometric plates can be performed in two steps. First, the rough coordinates of the star images to be measured can be obta-ined with a full-area scan in high speed. Next, the high-precision measurements of these images can be obtained with a image-by-image scan by means of the rough coordinates in lower speed. Two PDP-11 FORTRAN programs which will be applied to obtain rouhg coordinates are described and an example is given which shows that this technique is suitable to the unmodified PDS microdensi-tometer.

关 键 词：照相天体一PDS测量 程序处理 底片 扫描驱动程序 

分 类 号：P123[天文地球—天体测量]