彗星13P/奥伯斯

彗星13P/奥伯斯

Comet 13P/Olbers
Image Credit & Copyright: Dan Bartlett`

Explanation: Not a paradox, Comet 13P/Olbers is returning to the inner Solar System after 68 years. The periodic, Halley-type comet will reach its next perihelion or closest approach to the Sun on June 30 and has become a target for binocular viewing low in planet Earth’s northern hemisphere night skies. But this sharp telescopic image of 13P is composed of stacked exposures made on the night of June 25. It easily reveals shifting details in the bright comet’s torn and tattered ion tail buffeted by the wind from an active Sun, along with a broad, fanned-out dust tail and slightly greenish coma. The frame spans over two degrees across a background of faint stars toward the constellation Lynx.

Tomorrow’s picture: light-weekend

彗星13P/奥伯斯
影像提供与版权: Dan Bartlett`

说明: 经过68年后，彗星13P/奥伯斯（Olbers）会再次回访太阳系内围，而这不是会造成矛盾的悖论。这颗周期性的哈雷型彗星，将于6月30日运行到最靠近太阳的近日点。目前它是地球北半球夜空中，用双筒望远镜观测的低角度标的。不过，这幅彗星13P的清晰望远镜影像，则是叠合自摄于6月25日晚的多张照片。影像清楚的呈现了这颗明亮彗星的宽广扇形尘尾、淡绿彗发、和破裂零散离子尾，以及离子尾受到源自活跃太阳的太阳风之吹袭而摇摆不定。这片以天猫座方向昏暗恒星为背景的视野，跨幅超过2度。

明日的图片: light-weekend