你几乎可以看到的猎户座
(原标题: The Orion You Can Almost See)
2024-01-16
浏览次数: 14
你认得这个星座吗？虽然它是天空中最容易辨认的星群之一，但这是一个比你能看到的更完整的猎户座——一个只有用长曝光数码相机成像和后期处理才能显示出来的猎户座。在这张图中，寒冷的红巨星参宿四呈现出强烈的橙色色调，是左上角最亮的恒星。猎户座的炽热蓝色恒星数不胜数，右下方是与参宿四平衡的超巨星参宿七，右上方是贝拉特里克斯。在猎户座的腰带上排列着三颗恒星，它们都距离我们1500光年远，诞生于猎户座被充分研究过的星际云。就在猎户座腰带的下方，是一片明亮但模糊的斑块，可能看起来也很熟悉——被称为猎户座星云的恒星托儿所。最后，肉眼几乎看不到，但非常引人注目的是巴纳德环——一个巨大的气体发射星云，围绕着猎户座的腰带和星云，100多年前由猎户座的先驱摄影师e.e.巴纳德发现。
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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.
© Michele Guzzini