博文
The method of observation in O-C gateway
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对食双星周期分析的过程中，需要收集所有文献中的极小时刻，进行O-C分析，在O-C gateway网站上会给出绝大多数极小时刻，在网站中“Displayed data”里有一列是 METHOD 信息，这里对各种简写作出具体的解释：
vis: visual estimates;
vw: visual measures using wedge;
v* : visual measures using polarizing photometers;
pg: photographic estimates;
pgw: photographic plates measured with wedgy;
pg* : photographic plates measured with physical photometers;
pe : photoelectric measures;
-Ir : ?
ccd: charge coupled device;
ccdC:?
ccdR:?
C:?
V:?
2010-05-11 于京https://blog.sciencenet.cn/blog-287062-322894.html
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