ZTF彗星的三重视图
(原标题: A Triple View of Comet ZTF)
2023-01-31
浏览次数: 15
彗星ZTF有一个独特的形状。这颗正在造访内太阳系的明亮彗星不仅呈现出常见的尘埃彗尾、离子彗尾和绿色气体彗发，而且还呈现出与众不同的反彗尾。反彗尾实际上并没有引导彗星——只是彗头被叠加在部分呈扇形的尾迹上。巨大的脏雪球彗星C/2022 E3 （ZTF）现在已经经过了离太阳最近的地方，明天将经过离地球最近的地方。这张特色三重图像的主面板显示了上周在西班牙Cáceres上空黑暗晴朗的天空下，ZTF彗星的肉眼外观。上面的插图显示了通过双筒望远镜看到的彗星，而下面的插图显示了通过小型望远镜看到的彗星。现在在北纬地区可以整夜看到这颗彗星，但在接下来的几周内肯定会逐渐消失。彗星ZTF画廊：值得注意的提交给APOD
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Comet ZTF has a distinctive shape. The now bright comet visiting the inner Solar System has been showing not only a common dust tail, ion tail, and green gas coma, but also an uncommonly distinctive antitail. The antitail does not actually lead the comet -- it is just that the head of the comet is seen superposed on part of the fanned-out and trailing dust tail. The giant dirty snowball that is Comet C/2022 E3 (ZTF) has now passed its closest to the Sun and tomorrow will pass its closest to the Earth. The main panel of the featured triple image shows how Comet ZTF looked last week to the unaided eye under a dark and clear sky over Cáceres, Spain. The top inset image shows how the comet looked through binoculars, while the lower inset shows how the comet looked through a small telescope. The comet is now visible all night long from northern latitudes but will surely fade from easy observation during the next few weeks. Comet ZTF Gallery: Notable Submissions to APOD
© Javier Caldera & Miguel Gracia