Comet C/2025 A6 (Lemmon 萊蒙彗星)

Comet C/2025 A6 (Lemmon 萊蒙彗星)

Comet C/2025 A6 (Lemmon 萊蒙彗星)



C/2025 A6（萊蒙彗星）— 2025年10月14日 晚上8時12分 亞伯達省 Canon R5 · EF 85mm f/1.2 · ISO 3200 · 1秒曝光 · 裁切構圖

這是一張單張曝光的照片，捕捉到萊蒙彗星在亞伯達夜空中閃耀的身影。彗星的翠綠色核部由雙原子碳（C₂）與氰基（CN）氣體所發出的輝光組成，散發柔亮的綠光，周圍的星辰如靜默的陪伴。其細長的尾部向上略偏東方延伸，呈現出微妙的彎曲與漸變，顯示出太陽風對離子尾的牽引。



Comet C/2025 A6 (Lemmon) — October 14, 2025, 8:12 PM, Alberta Canon R5 · EF 85mm f/1.2 · ISO 3200 · 1s exposure · cropped

This single exposure beautifully captures Comet Lemmon glowing in the dark Alberta sky. The comet’s emerald-green nucleus, rich in diatomic carbon (C₂) and cyanogen (CN), radiates a luminous aura against a field of faint background stars. Its delicate dust and ion tail, extending upward and slightly eastward, reveals subtle curvature and gradation—tracing the solar wind’s influence.



At the moment of capture, the comet was positioned between Ursa Major and Canes Venatici (大熊座與獵犬座之間) , approximately 20° above the horizon, gradually brightening as it approached its closest passage to Earth. Despite the short 1-second exposure, the Canon R5’s sensitivity and the large aperture of the Canon EF 85mm f/1.2 lens preserved fine tail details and a graceful color transition from vivid green to soft bluish tones.

This image conveys the quiet wonder of a transient traveler—an icy messenger from the outer solar system—momentarily sharing the autumn night above Alberta.