Development of the Processing Technique for Schmidt Plate

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-iv, POSS-一七 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 f ilter 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-一七 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 systemat ic error related to the magnitude, especially for faint stars; (4)observational data of two sky regions (near galactic pole and galact ic latitude 30 degree) as standard areas selected from POSS-一七, 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.