NASA詹姆斯·韦伯望远镜“睁眼”看到第一颗星 并发回了一张自拍

经过多年的拖延、漫长的太空旅行以及复杂的部署过程,詹姆斯·韦伯太空望远镜已经宣告取得了初步胜利:机载设备启动后拍摄到第一颗恒星的图像被发回了地球。詹姆斯·韦伯望远镜是美国国家航空航天局、欧洲航天局和加拿大航天局的一个联合项目,它的任务是窥视宇宙的最初时代。

在它能够实现这一宏伟目标之前需要确保所有的系统都正常。在周五的简报中,NASA宣布韦伯”即将完成使用近红外相机(NIRCam)仪器对准天文台主镜的第一阶段,这一过程长达数月之久”。

韦伯的主镜由18个镀金的六边形片段组成,需要一起工作,校准任务将确保NIRCam能够收集光线,然后让这些镜片中的每个镜片都能聚焦来自同一星源的星光,事实证明它成功了。

在美国宇航局发布的包含一些看上去就像是马赛克的图像中,该望远镜“睁眼”后看到的第一颗星出现了18次。它可能看起来有点乱,但这表明韦伯正在按照既定方式运行。这颗星看起来随机地散落在这些图像上,这是因为镜片还没有对准。在接下来的一个月左右,团队将逐步调整反射镜,直到18个图像聚焦成一个单一的恒星。

除了韦伯的第一颗星,NASA还分享了一张由NIRCam仪器内的特殊镜头拍摄的主镜自拍照,这对于团队而言精彩的奖励甜点,也是对一项没有专门配备自拍相机的任务的巧妙替代。

“向太空发射韦伯当然是一个令人兴奋的事件,但对于科学家和光学工程师来说,这无疑是一个巅峰时刻,当来自恒星的光线成功地通过系统下到探测器上时,”韦伯项目科学家Michael McElwain说。

对于地球上所有热爱天文学的人而言,这是韦伯在太空中早期的一个值得庆祝的时刻,但这只是一个较长过程的开始。韦伯的仪器仍在冷却,以保证进入它们的主要工作温度,镜片的调整也在持续进行着。

最好的消息是来自韦伯的信息:到目前为止,一切都很好。

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