The system error of infrared photometric measurement on the saturation temperature and supersaturation of crystal magma were qualitatively and quantitatively analyzed.

对于红外光度法测量晶浆饱和温度、过饱和度的系统误差作了定性和定量的分析。

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Integration time is important to error of photometrical results in CCD photometric and observation.

CCD测光观测中积分时间的选取，对测光结果的误差大小有很大影响。

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This paper introduces the basic principle to correct the photometric linearity with optical superposition method, and its measuring method; Error equation of linearity correction is given;

介绍了采用光叠加法校正分光光度计光度线性的基本原理及测量方法；

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