根据数字化巡天光盘测定天体E或V星等  

A Determination of E or V Magnitudes of Celestial Bodies Based on Digitized Sky Survey

作　　者：曹莉[1] 魏建彦[1] 胡景耀[1] 

机构地区：[1]中国科学院北京天文台

出　　处：《天体物理学报》1997年第4期428-434,共7页

基　　金：国家自然科学基金;中国科学院光学联合实验室资助

摘　　要：用目视和底片密度扫描的办法从帕洛玛巡天底片得到天体星等资料已有许多作者讨论过，其结果得到广泛的应用．考虑到帕洛玛底片已经数字化并做出了数字化巡天光盘（ＤＳＳ），若从它直接得到测光资料将更为方便，为此，我们发展了直接从ＤＳＳ中得到北天天区天体（δ３°）Ｅ或Ｖ星等的软件，其测量Ｅ星等的精度为０．３７ｍ（１３．５ｍＥ１８．０ｍ），Ｖ星等的精度为０．４２ｍ（１４．４ｍＶ１８．９ｍ）．Many attempts have been made at getting magnitudes of celestial bodies by utilizing the Palomar Sky Survey plates. Visual and plate-density scanning methods are the two main ways which have already been discussed and applied widely. Since the plates have been digitized, and the Digitized Sky Survey (DSS) discs are available now, it will be more convenient to estimate the magnitude information from the DSS directly. We have developed a program for deriving celestial bodies' E or V magnitudes from the DSS. The rms for E and V magnitude determination are 0.37 m(13.5 mE18.0 m) and 0.42 m(14.4 mV18.9 m) respectively.

关 键 词：数字化 巡天 星等测量 测光 天体测量 光盘 

分 类 号：P123[天文地球—天体测量]