photometric standard

A low-Light photometry test-table developed specially for calibrating low-light photometer has been introduced and the transfer errors of photometric standard have been analyzed.

探讨基于标准探测器建立弱光光度标准中的主要问题，介绍为标定弱光光度计专门研制的弱光度测试台，分析了光度标准的传递误

In the highly precise CCD measurement of a stellar image for its position and photometry,some researchers use CCD photometric calibration but the others do not.

近年来,在用CCD器件进行恒星星像的位置和光度的精确测量中,有些研究者考虑了器件的光度定标(或称平场)的改正,有些人却不加说明地忽略之。