欧几里得的英仙座星系团
(原标题: Perseus Galaxy Cluster from Euclid)
2023-11-08
浏览次数: 20
在天空中有一个新的太空望远镜：欧几里得。欧几里得配备了两个大型全景摄像机，可以捕捉从可见光到近红外线的光线。欧几里得直径1.2米的主镜花了5个小时的观测时间，通过其锐利的光学系统，捕捉到了位于2.5亿光年之外的英仙座星系团中的1000多个星系。在背景中可以看到超过10万个星系，其中一些远在100亿光年之外。欧几里得的革命性在于它的宽视野（两倍于满月的面积）、高角度分辨率（多亏了它的6.2亿像素摄像头）和红外视觉（既能捕捉图像又能捕捉光谱）的结合。欧几里得的初步调查覆盖了三分之一的天空，记录了超过20亿个星系，将使人们能够研究暗物质和暗能量是如何塑造我们的宇宙的。
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There's a new space telescope in the sky: Euclid. Equipped with two large panoramic cameras, Euclid captures light from the visible to the near-infrared. It took five hours of observing for Euclid's 1.2-meter diameter primary mirror to capture, through its sharp optics, the 1000+ galaxies in the Perseus cluster, which lies 250 million light years away. More than 100,000 galaxies are visible in the background, some as far away as 10 billion light years. The revolutionary nature of Euclid lies in the combination of its wide field of view (twice the area of the full moon), its high angular resolution (thanks to its 620 Megapixel camera), and its infrared vision, which captures both images and spectra. Euclid's initial surveys, covering a third of the sky and recording over 2 billion galaxies, will enable a study of how dark matter and dark energy have shaped our universe.