你幾乎能看到的獵戶座
The Orion You Can Almost See

來源:Michele Guzzini|發表日期:2024-01-16
你認識這個星座嗎? 雖然它是天空中最容易辨認的星群之一,但這是一個比你所看到的更完整的獵戶座--只有透過長時間曝光的數碼相機成像和後期處理,獵戶座才能顯現出來。 在這裡,冷紅色巨星參宿四呈現出強烈的橙色,是左上方最亮的恆星。 獵戶座的炙熱藍星數量眾多,超巨星參宿四與右下方的參宿四相平衡,而貝拉特里克斯則位於右上方。在獵戶座腰帶上排列著三顆恆星,距離獵戶座都在 1500 光年左右,它們都誕生於獵戶座被研究得很透徹的星際雲中。在獵戶座腰帶的正下方,有一塊明亮但模糊的地方,看起來可能也很熟悉--那就是被稱為獵戶座星雲的恆星育兒室。 最後,這就是巴納德環狀星雲(Barnard's Loop),它在獵戶座腰帶和星雲周圍,是一個巨大的氣態發射星雲, 100 多年前由獵戶座攝影先驅 E. E. Barnard 發現。
原文:Do you recognize this constellation? Although it is one of the most recognizable star groupings on the sky, this is a more full Orion than you can see -- an Orion only revealed with long exposure digital camera imaging and post- processing. Here the cool red giant Betelgeuse takes on a strong orange tint as the brightest star on the upper left. Orion's hot blue stars are numerous, with supergiant Rigel balancing Betelgeuse on the lower right, and Bellatrix at the upper right. Lined up in Orion's belt are three stars all about 1,500 light-years away, born from the constellation's well-studied interstellar clouds. Just below Orion's belt is a bright but fuzzy patch that might also look familiar -- the stellar nursery known as Orion's Nebula. Finally, just barely visible to the unaided eye but quite striking here is Barnard's Loop -- a huge gaseous emission nebula surrounding Orion's Belt and Nebula discovered over 100 years ago by the pioneering Orion photographer E. E. Barnard.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
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