Schmidt底片处理技术的发展  

Development of the Processing Technique for Schmidt Plate

作　　者：金文敬[1] 唐正宏[1] 王叔和[1] 

机构地区：[1]中国科学院上海天文台

出　　处：《云南天文台台刊》2003年第3期22-35,共14页Publications of the Yunnan Observatoty

基　　金：LAMOST工程(OOBJK003)资助课题;国家自然科学基金资助项目(19833010;19833030和10073015);中国科学院知识创新重要方向项目(KJCX2-SW-T1)和重要资助项目(91142);上海市科技发展基金资助项目(01JC14058).

摘　　要：描述了20世纪50年代以来,利用Schmidt望远镜实现的各种巡天计划及Schmidt底片的特点。介绍了Schmidt底片处理技术的发展,特别是分块底片处理法(Subplate),Mask法和滤波法处理底片的数学理论和结果。讨论了现代其他数学方法用于Schmidt底片处理的可能性。最后对编制LAMOST输入星表可能采用的底片处理方法提出若干建议。In this paper at first,the characteristics of Schmidt plates about radial and magnitude systematic errors and various sky surveys with Schmidt telescopes,such as AC,CdC,POSSⅠ,POSSⅡ etc. have been described.Second part,based on the development of processing technique for Schmidt plates,the mathematical principle and computational results for Subplate,Mask and filter methods are given.Third part,the possibility of using the other modern mathematical methods for processing Schmidt plates such as Bootsrap and Least square collocation methods is introduced.Finally,four suggestions of processing photographic plates for compiling LAMOST input catalogue are presented as follows:(1)Mask and IOC filtering methods will be used to process POSS plates,(2)TychoⅡ catalog is adopted as reference catalog to obtain the radial systematic error,(3)the catalog,which is compiled with CCD observations of FASTT,USNO or compiled by the results of SDSS,will be used to derive the systematic error related to the magnitude,especially for faint stars;(4)observational data of two sky regions (near galactic pole and galactic latitude 30 degree)as standard areas selected from POSSⅡ,will be processed by using two methods as mentioned above and the results will be compared with the observations of FASST or SDSS for obtaing the systematic error related to the magnitude.

关 键 词：底片处理技术 SCHMIDT 施密特底片 分区重叠法 虚格栅法 

分 类 号：P123[天文地球—天体测量]