Absolute flux distribution of BD +17 4708
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Secondary flux standards are established by measuring their brightness relative to primary standard stars. The Hubble Space Telescope (HST) primary standards are the three...
次级流量标准（secondary flux standards）的定标需通过将其亮度与初级标准星进行相对测量来完成。哈勃空间望远镜（Hubble Space Telescope, HST）的初级标准星为三颗……
