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2017年11月29日:M42:猎户座大星云-(M42: The Great Orion Nebula)
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2024-01-16
2024年01月16日:肉眼几乎可见的猎户座-(The Orion You Can Almost See)
[2024年01月16日:肉眼几乎可见的猎户座-(The Orion You Can Almost See)--原图下载](https://apod.nasa.gov/apod/image/2401/OrionMcc_Guzzini_1366.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2401/OrionMcc_Guzzini_960_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2401/OrionMcc_Guzzini_960.jpg';){mtitle title="肉眼几乎可见的猎户座"/}Image Credit & Copyright: Michele Guzzini说明: 你认得这个星座吗?儘管它是天空中最容易辨认的星群之一,但这种与肉眼所见比较更加完整的猎户座,只有透过长曝光数位相机成像及电脑后製处理才得以显现。在此影像里,带着深橙色调的低温红巨星参宿四,是位于左上角的最明亮恒星。猎户座的炽热泛蓝恒星数量众多,其中,右下角的超巨星参宿七,亮度足以和左上角的参宿四相抗衡,而右上角的亮星则是参宿五。距离我们全约为1,500光年远的猎户腰带三星,皆诞生于猎户座备受研究的星际云里。猎户腰带下方有一片明亮但模糊的光斑,它看来或许也有点眼熟,这是因为它是名为猎户大星云的恒星孕育室。最后是肉眼勉强可见但相当引人注目的巴纳德环,这团环拱在猎户腰带和猎户大星云周围的庞大发射星云,是由猎户座摄影先锋巴纳德发现于100多年前。(Betelgeuse 参宿四; Rigel 参宿七; Bellatrix 参宿五; Barnard's Loop 巴纳德环; Hatysa 伐三; Alnitak 参宿一; Alnilam 参宿二; Mintaka 参宿三; Saiph 参宿六; Cursa 玉井三-波江座){lamp/}原文:{mtitle title="The Orion You Can Almost See"/}Image Credit & Copyright: Michele GuzziniExplanation: 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.
2024年01月16日
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2021-03-22
2021年03月22日:从猎户座到御夫座-(From Auriga to Orion)
[2021年03月22日:从猎户座到御夫座-(From Auriga to Orion)--原图下载](https://apod.nasa.gov/apod/image/2103/AroundOrion_Symon_2000.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2103/AroundOrion_Symon_1080_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2103/AroundOrion_Symon_1080.jpg';){mtitle title="从猎户座到御夫座"/}Image Credit & Copyright: Alistair Symon说明: 从猎户座到御夫座的天区有什么天体?如这幅总曝光时间超过430小时、由34张照片拼接而成的主题影像所示,可见到许多着名的恒星和星云。从左上角的御夫座方向开始,有美丽的烽火恒星云(IC 405)。然后顺着银河系明亮的银河弧,从左到右穿过双子座及金牛座,可见到蝌蚪星云、超新星遗迹Simeis 147、猴头星云、水母星云、锥状星云和和玫瑰(蔷薇)星云。在影像右上4分之1的猎户座方向,可见到Sh2-264星云、巴纳德环的半圆区、马头星云和猎户大星云。在猎户座内及周围的区域里,着名的恒星从左到右为影像中心之右的橙红的参宿四、其上方的泛蓝参宿五、腰带三星(参宿三、参宿二与参宿一),以及出现在右上角的泛蓝参宿七。这片的天区悬在天空的时间不会太长,而且随着时光来到年中,西沈的时间也会越来越早。{lamp/}原文:{mtitle title="From Auriga to Orion"/}Image Credit & Copyright: Alistair SymonExplanation: What's up in the sky from Auriga to Orion?Many of the famous stars and nebulas in this region were captured on 34 separate images, taking over 430 hours of exposure, and digitally combined to reveal the featured image.Starting on the far upper left, toward the constellation of Auriga (the Chariot driver), is the picturesque Flaming Star Nebula (IC 405). Continuing down along the bright arc of our Milky Way Galaxy, from left to right crossing the constellations of the Twins and the Bull, notable appearing nebulas include the Tadpole, Simeis 147, Monkey Head, Jellyfish, Cone and Rosette nebulas. In the upper right quadrant of the image, toward the constellation of Orion (the hunter), you can see Sh2-264, the half-circle of Barnard's Loop, and the Horsehead and Orion nebulas.Famous stars in and around Orion include, from left to right, orange Betelgeuse (just right of the image center), blue Bellatrix (just above it), the Orion belt stars of Mintaka, Alnilam, and Alnitak, while bright Rigel appears on the far upper right.This stretch of sky won't be remaining up in the night very long -- it will be setting continually earlier in the evening as mid-year approaches.
2021年03月22日
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2019-08-21
2019年08月21日:肉眼几乎可见的猎户座-(The Orion You Can Almost See)
[2019年08月21日:肉眼几乎可见的猎户座-(The Orion You Can Almost See)--原图下载](https://apod.nasa.gov/apod/image/1908/OrionDeep_GleasonAndreo_2048.jpg"onMouseOver="if (document.images)document.imagename1.src='image/1908/OrionDeep_GleasonAndreo_1080_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/1908/OrionDeep_GleasonAndreo_1080.jpg';){mtitle title="肉眼几乎可见的猎户座"/}Image Credit & Copyright: John Gleason&RogelioBernal Andreo说明: 你认得这个星座吗?纵然它是地球天空中,最容易辨识的星群之一,但这幅使用数位相机进行长曝光成像及后续影像处理的影像,呈现的猎户座超出人类肉眼所能见。在影像中,低温的红巨星参宿四,是左下角带着鲜明橙色的最明亮恒星。猎户座里有难以数计的炽热泛蓝恒星,其中有位在右上角和参宿四斜角对峙的超巨星参宿七,以及左上角的参宿五。而构成猎户腰带的腰带三星,距离都在1,500光年上下,全都诞生于这个星座被研究得很透澈的星际云里。猎户腰带右方的泛红弥漫光斑,或许看来有些眼熟,因为它就是猎户大星云。最后,肉眼勉强可见,但在这幅影像里却是无比醒目的巴纳德圈,是个环拱猎户腰带和猎户大星云的庞大发射云弧,由首先为猎户座造像的摄影师巴纳德,发现于100多年前。{lamp/}原文:{mtitle title="The Orion You Can Almost See"/}Image Credit & Copyright: John Gleason&RogelioBernal AndreoExplanation: 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 at the lower left. Orion's hot blue stars are numerous, with supergiant Rigel balancing Betelgeuse on the upper right, and Bellatrix at the upper left.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.To the right of 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.
2019年08月21日
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2018-03-21
2018年03月21日:相机镜头里的猎户座-(Camera Orion)
[2018年03月21日:相机镜头里的猎户座-(Camera Orion)--原图下载](https://apod.nasa.gov/apod/image/1803/OrionMosaic_Lim_957.jpg"onMouseOver="if (document.images)document.imagename1.src='image/1803/OrionMosaic_Lim_960_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/1803/OrionMosaic_Lim_960.jpg';){mtitle title="相机镜头里的猎户座"/}Image Credit & Copyright: Derrick Lim说明: 你认得这个星座吗?纵然它是地球天空中最容易辨识的星群之一,但猎户座的标誌性天体,在人眼中远没有在相机镜头里来得色彩缤纷。在这幅由20张照片数位接合的拼接影像里,低温的红巨星参宿四,是左上角带着鲜明橙色的明亮恒星。猎户座里有难以数计的炽热泛蓝恒星,其中有位在右下角和参宿四斜角对峙的超巨星参宿七,右上角的参宿五,与及构成猎户腰带的腰带三星,而它们的距离都在1,500光年上下,也都诞生于这个星座被研究得很透澈的星际云里。猎户腰带下方的泛红弥曼光斑或许看来有些眼熟,这是因为它就是猎户座大星云。最后,肉眼勉强可见,但在相机镜头却是无比醒目的巴纳德圈,是个环拱猎户腰带和猎户座大星的庞大发射云弧,大约是在100多年前,由首先为猎户座造像的摄影师巴纳德所发现。{lamp/}原文:{mtitle title="Camera Orion"/}Image Credit & Copyright: Derrick LimExplanation: Do you recognize this constellation? Although it is one of the most recognizable star groupings on the sky, Orion's icons don't look quite as colorful to the eye as they do to a camera. In this 20-image digitally-composed mosaic, cool red giant Betelgeuse takes on a strong orange tint as the brightest star at the upper left. Orion's hot blue stars are numerous, with supergiant Rigel balancing Betelgeuse at the lower right, and Bellatrix at the upper rightLined up in Orion's belt are three stars all about 1,500 light-years away, born from the constellation's well-studied interstellar clouds.Below Orion's belt a reddish and 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 by camera 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.
2018年03月21日
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