第 13 P/奧伯斯彗星
Comet 13P/Olbers

來源:Dan Bartlett|發表日期:2024-06-28
13 P/奧伯斯彗星在 68 年後重返太陽系內部,這並不是一個悖論。這顆週期性的哈雷型彗星將於 6 月 30 日到達下一個近日點或最接近太陽的位置,併成為地球北半球夜空中雙筒望遠鏡的觀測目標。但這幅清晰的 13 P 望遠鏡影像是由 6 月 25 日晚的疊加曝光組成的。它很容易就能顯示出這顆明亮彗星被活躍太陽的風吹得破破爛爛的離子尾部的變化細節,以及寬闊、扇形的塵埃尾部和略帶綠色的彗尾。畫面跨越兩度多的微弱恆星背景,指向天鷹座。
原文: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.
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