史汪彗星的长尾

2020 May 8

Long Tailed Comet SWAN
Image Credit & Copyright: D. Peach, Chilescope team

Explanation: Blowing in the solar wind the spectacular ion tail of Comet SWAN (C/2020 F8) extends far across this 10 degree wide telephoto field of view. Captured on May 2 its greenish coma was about 6 light-minutes from Earth. The pretty background starfield lies near the border of the constellations Cetus and Aquarius. This comet SWAN was discovered at home by Australian amateur Michael Mattiazzo by checking images from the Sun-staring SOHO spacecraft’s SWAN (Solar Wind ANisotropies) camera. The comet has now become just visible to the naked-eye as it sweeps from southern to northern skies. Appearing in morning twilight near the eastern horizon, Comet SWAN will make its closest approach to planet Earth on May 12 and reach perihelion on May 27.

Tomorrow’s picture: light-weekend

史汪彗星的长尾
影像提供与版权: D. Peach, Chilescope team

说明: 在这幅宽达10度视野的长焦镜头影像里，史汪彗星（C/2020 F8）壮观的颀长离子尾，在太阳风的吹袭下伸展到视野之外。在5月2日拍摄之时，它的泛绿彗发离地球约6光分远。影像美丽的背景，则是位在鲸鱼座和宝瓶座交界处的星野。史汪彗星是由澳洲的业余天文爱好者Michael Mattiazzo，在家检视观日SOHO卫星的史汪（SWAN；太阳风异向性）相机影像时所发现。随着这颗彗星从南天往北天飞掠，它刚成一颗肉眼勉强可见的彗星。目前可在东方地平线附近的清晨曙光里，找到史汪彗星的身影。它将在5月12日运行到最靠近地球的位置，然后在5月27日抵达近日点。（Comet SWAN史汪彗星）

明日的图片: light-weekend