Copyright:
Rogelio
Bernal Andreo
原文:
Cradled in cosmic dust and glowing hydrogen, stellar nurseries in Orion the Hunter lie at the edge of giant molecular clouds some 1,500 light-years away. Spanning about 30 degrees, this breath-taking vista stretches across the well-known constellation from head to toe (left to right) and beyond. At 1,500 light years away, the Great Orion Nebula is the closest large star forming region, here visible just right and below center. To its left are the Horsehead Nebula, M78, and Orion’s belt stars. Sliding your cursor over the picture will also find red giant Betelgeuse at the hunter’s shoulder, bright blue Rigel at his foot, the Witch Head Nebula above — and illuminated by — Rigel, and the glowing Lambda Orionis (Meissa) nebula on the left, near Orion’s head. Of course, the Orion Nebula and bright stars are easy to see with the unaided eye, but dust clouds and emission from the extensive interstellar gas in this nebula-rich complex, are too faint and much harder to record. In this mosaic of broadband telescopic images, additional image data acquired with a narrow hydrogen alpha filter was used to bring out the pervasive tendrils of energized atomic hydrogen gas like in the arc of the giant Barnard’s Loop.
中文翻譯:
✨ 被宇宙塵和發光氫環抱的星際孕育區，位於獵戶（Orion the Hunter）星座的巨型分子雲邊緣，距離地球約1,500光年。這壯觀的景象橫跨約30度，從獵戶的頭到腳（左至右）延展開來。在1,500光年遠的地方，大獵戶星雲（Great Orion Nebula）是離我們最近的大型恆星形成區，位於圖像的中下部偏右方。它的左邊包含了馬頭星雲（Horsehead Nebula）、M78以及獵戶帶的恆星。
把光標滑過圖片，你會發現紅巨星貝塔朱斯（Betelgeuse）位於獵戶的肩膀上，亮藍星瑞傑（Rigel）在他的腳下，女巫頭星雲（Witch Head Nebula）恰好位於瑞傑之上並受到其照耀，而發光的λ獵戶星雲（Lambda Orionis，亦稱Meissa）則在左邊，靠近獵戶的頭部。當然，獵戶星雲和明亮的恆星用肉眼就能輕易看見，但這個富有星雲的複雜中，塵雲和來自廣泛星際氣體的發射卻太過微弱，難以捕捉。在這幅由多幅寬頻望遠鏡影像組成的馬賽克中，額外使用窄氫α濾光片獲得的影像數據，有助於捕捉到能量豐富的原子氫氣的普遍伸展，彷彿是始於巨型巴納德環（Barnard’s Loop）的弧線。
#獵戶星座 #大獵戶星雲 #星際孕育區 #巴納德環 #恆星形成 #宇宙之美 #觀星 #天文學 #天文攝影 #太空探索
來源:NASA每日圖片
