脚注4:斯隆数字巡天,又名SDSS,采用一台位于阿帕奇天文台(Apache Point Observatory)的2.5米望远镜做测光和光谱的观测。目前SDSS已经释放了9次科学数据。
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Astronomers captured the spectra of the two record breakers with a 3.5-metre (11.5 feet) telescope, located at the Apache Point Observatory in New Mexico, also the site of the SDSS telescope.
BBC: Most distant objects observed
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