昆尼斯城堡上空的奥伯斯彗星
(原标题: Comet Olbers over Kunetice Castle)
2024-08-01
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6月30日，13P/奥尔伯斯彗星到达了最近的近日点，也就是最接近太阳的地方。这颗彗星每隔70年左右就会造访太阳系内部。现在，这颗哈雷彗星正在返回遥远的奥尔特云，这颗彗星在捷克共和国历史悠久的库内蒂斯城堡上空扫过北方的夏日夜空。7月28日拍摄的彗星和天空的跟踪曝光组合，显示了彗星宽阔的尘埃尾巴，更亮的彗发，以及受到太阳风暴和风冲击的长离子尾巴，以及前景景观的固定曝光。这颗彗星距离城堡约16光分，在北方大熊座下方暗淡的背景恒星下可见。这座山顶城堡可以追溯到15世纪，而海因里希·奥尔伯斯在1815年发现了这颗彗星。这张照片拍摄于日落后西北低空的奥尔伯斯彗星，目前为地球上的天文观测者提供了宝贵的望远镜和双筒望远镜视野。13P/奥尔伯斯彗星下一次经过近日点将在2094年。
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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. 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. The composite of tracked exposures for comet and sky, showing the comet's broad dust tail, brighter coma, and long ion tail buffeted by storms and winds from the Sun, and fixed exposures for foreground landscape was 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.
© Petr Horálek