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The California Nebula

The California Nebula
Copyright:
Farmakopoulos Antonis

原文:
What’s California doing in space? Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast of the United States. Our own Sun also lies within the Milky Way’s Orion Arm, only about 1,500 light-years from the California Nebula. Also known as NGC 1499, the classic emission nebula is around 100 light-years long. On the featured image, the most prominent glow of the California Nebula is the red light characteristic of hydrogen atoms recombining with long lost electrons, stripped away (ionized) by energetic starlight. The star most likely providing the energetic starlight that ionizes much of the nebular gas is the bright, hot, bluish Xi Persei just to the right of the nebula. A regular target for astrophotographers, the California Nebula can be spotted with a wide-field telescope under a dark sky toward the constellation of Perseus, not far from the Pleiades.
中文翻譯:
在太空中,加州正以其獨特的形狀吸引著天文學家和天文愛好者的注意。這個名為加州星雲(California Nebula,NGC 1499)的經典發射星雲,隨著我們的太陽在銀河系的獵戶臂漂流,顯得格外壯觀。加州星雲大約長達100光年,距離我們約1,500光年,主要發出紅光,這是氫原子與其失去的電子重新結合所產生的光芒。提供如此多能光照的星星為藍色明亮的西佩爾系(Xi Persei),它位於星雲的右側。

這個令人驚嘆的天體不僅是天文攝影師的常規拍攝目標,若在黑暗的天空下,您可以用廣角望遠鏡在金牛座附近的獵戶臂找到它,距離著名的昴星團(Pleiades)也不遠。

#CaliforniaNebula #加州星雲 #NGC1499 #Astrophotography #太空探索 #銀河系 #星雲 #天文學 #流行天文 #天文愛好者 #西佩爾系 #XiPersei #深空影像 #探索宇宙

來源:NASA每日圖片

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