历史上14架最著名望远镜被评出:哈勃上榜(12)
12、斯隆2.5米望远镜
![历史上14架最著名望远镜被评出:哈勃上榜 历史上14架最著名望远镜被评出:哈勃上榜](http://images2.china.com/tech/zh_cn/science/universe/1030/20090615/2009061509240153848300.jpg)
斯隆2.5米望远镜
“斯隆数字天空勘测计划”的2.5米望远镜位于美国新墨西哥州阿柏角天文台。该望远镜拥有一个相当复杂的数字相机,望远镜内部是30个电荷耦合器件(CCD)探测器。斯隆望远镜使用口径为2.5米的宽视场望远镜,测光系统配以分别位于u、g、r、i、z波段的五个滤镜对天体进行拍摄。这些照片经过处理之后生成天体的列表,包含被观测天体的各种参数,比如它们是点状的还是延展的,如果是后者,则该天体有可能是一个星系,以及它们在CCD上的亮度,这与其在不同波段的星等有关。另外,天文学家们还选出一些目标来进行光谱观测。
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