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Comets and Bright Star

Comets and Bright Star
Copyright:Fritz
Helmut Hemmerich

原文:
This timely, telescopic, two panel mosaic spans about 10 full moons across planet Earth’s predawn skies. Recorded as the year began from Tenerife, Canary Islands, near the top of the frame are the faint coma and tail of Comet Borrelly (P/19). A comet with a seven year orbital period, Borrelly’s nucleus was visited by the ion propelled spacecraft Deep Space 1 near the beginning of the 21st century. Anchoring the scene at the bottom is brilliant star Arcturus (Alpha Bootes) and Comet Catalina (C/2013 US10) a first time visitor from the Oort Cloud. Catalina’s yellowish dust tail extends below and right. Buffeted by winds and storms from the Sun, the comet’s complex ion tail sweeps up and toward the right, across most of the field of view. Remarkably, one of the composition’s 30 second exposure subframes also caught the trail of a bright meteor, slashing toward the left between comets and bright star.
中文翻譯:
這幅及時、望遠鏡式的雙面馬賽克影像,橫跨地球曙光天空約十個滿月。在畫面的頂部,可以看到彌漫的彗尾和coma,這是彗星Borrelly (P/19)。這顆七年軌道週期的彗星,於21世紀初被電離推進太空船Deep Space 1造訪。畫面底部的閃亮星星是大角星 (Arcturus, Alpha Bootes),而彗星Catalina (C/2013 US10)則是來自奧爾特雲的首次訪客。Catalina的黃色塵埃尾延伸至畫面下方和右側。受到太陽風和風暴的影響,彗星的複雜離子尾巴向右上方掃過整個視野。值得注意的是,這幅作品中有一張30秒曝光的子幀意外捕捉到一顆明亮流星的軌跡,劈啪而過,正好在兩顆彗星和亮星之間。

#天文 #彗星 #Borrelly #Catalina #大角星 #流星 #觀星 #天文攝影 #Tenerife #CanaryIslands #宇宙奇觀

來源:NASA每日圖片

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