库内第采城堡上空的奥伯斯彗星

2024年8月1日

Comet Olbers over Kunetice Castle
Image Credit & Copyright: Petr Horálek / Institute of Physics in Opava

Explanation: A visitor to the inner solar system every 70 years or so Comet 13P/Olbers reached its most recent perihelion, or closest approach to the Sun, on June 30 2024. Now on a return voyage to the distant Oort cloud the Halley-type comet is recorded here sweeping through northern summer night skies over historic Kunetice Castle, Czech Republic. Along with a broad dust tail, and brighter coma, this comet’s long ion tail buffeted by storms and winds from the Sun, is revealed in the composite of tracked exposures for comet and sky, and fixed exposures for foreground landscape recorded on July 28. The comet is about 16 light-minutes beyond the castle and seen against faint background stars below the northern constellation Ursa Major. The hilltop castle dates to the 15th century, while Heinrich Olbers discovered the comet in 1815. Captured here low in northwestern skies just after sunset Comet Olbers, for now, offers skywatchers on planet Earth rewarding telescopic and binocular views. Comet 13P/Olbers next perihelion passage will be in 2094.

Tomorrow’s picture: martian chronicles

库内第采城堡上空的奥伯斯彗星
影像提供与版权: Petr Horálek / Institute of Physics in Opava

说明: 大约每70年回访太阳系内围的彗星13P/奥伯斯，于2024年6月30日再次来到最靠近太阳的近日点。这幅摄于7月28日的影像，记绿了这颗目前已踏上遥远欧特云归途的哈雷型彗星，掠过捷克的库内第采城堡上方北半球夏季夜空时的景观。在这幅整合了分别以彗星与恒星为导星及记录前方地景的照片之组合影像里，可清楚见到这颗彗星宽广的尘埃尾、明亮的彗发，及受到太阳风暴和太阳风吹拂的颀长离子尾。这颗彗星位在城堡后方约16光分之处，悬在北天大熊座下方的昏暗背景恒星的前方。这座山顶城堡建于15世纪，而奥伯斯则是在1815年发现这颗彗星。影像里低悬在刚日落后的西北方天空中的奥伯斯彗星，目前是地球上的天文爱好者，用望远镜和双筒望远镜观赏的好标的。彗星13P/奥伯斯下次再通过近日点，得等到2094年。

明日的图片: martian chronicles