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2021年09月08日:仙女大星系方向的深空影像-(The Deep Sky Toward Andromeda)
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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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2017年08月06日:银河与炸裂的流星-(Milky Way and Exploding Meteor)
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2024年02月11日:直指月亮的火箭烟尘影子-(Rocket Plume Shadow Points to the Moon)
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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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2021-05-09
2021年05月09日:马头星云和与猎户座的其他星云-(Horsehead and Orion Nebulas)
2021年05月09日:马头星云和与猎户座的其他星云-(Horsehead and Orion Nebulas)--原图下载{mtitle title="马头星云和与猎户座的其他星云"/}Image Credit & Copyright: Roberto Colombari & Federico Pelliccia说明: 黝黑的马头星云和明亮的猎户大星云,是宇宙中对比很鲜明的景观。漂流在1,500光年之外,位在夜空最容易辨认星座里的这对星云,分别位在这幅精采组合影像的对角。熟稔的马头星云是暗星云,为嵌在左下角条状辉光云气上的小剪影。马头星云左方的最明亮的恒星,则是猎户腰带最东边的参宿一。参宿一下方的火焰星云,是由辉光云气和吸睛的尘埃带交织而成。宏伟的猎户大星云 (M42)位在影像的右上角,而紧靠在它左侧的醒目蓝色反射星云,有慢跑人星云的称号。此外,在此区域里,到处散布着细丝状的明亮氢气。{lamp/}原文:{mtitle title="Horsehead and Orion Nebulas"/}Image Credit & Copyright: Roberto Colombari & Federico PellicciaExplanation: The dark Horsehead Nebula and the glowingOrion Nebula are contrasting cosmic vistas.Adrift 1,500 light-years away in one ofthe night sky'smost recognizableconstellations,they appear in opposite corners of the abovestunning mosaic.The familiar Horseheadnebula appears as a dark cloud, a small silhouettenotched against the long red glow at the lower left.Alnitak is the easternmost star inOrion's belt and is seen as the brightest star to the left of theHorsehead.Below Alnitak is theFlame Nebula, with clouds ofbright emission anddramatic dark dust lanes.The magnificent emission region, theOrion Nebula (aka M42), lies at the upper right.Immediately to its left is a prominent reflection nebula sometimes called the Running Man.Pervasive tendrilsof glowing hydrogen gas are easilytracedthroughout the region.
2021年05月09日
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2021-01-21
2021年01月21日:M78的大视野影像-(M78 Wide Field)
2021年01月21日:M78的大视野影像-(M78 Wide Field)--原图下载{mtitle title="M78的大视野影像"/}Image Credit &Copyright: Wes Higgins说明: 在富饶的猎户座里,到处都是星际尘埃云与明亮星云。M78就是其中最明亮者之一,在这幅涵盖猎户腰带以北天区的彩色美丽广角影像里,它是位在视野中心的天体。泛蓝色反射星云M78离我们约1,500光年远,大小则在5光年左右。它的色泽,来自它内部的尘埃偏好反射附近炽热年轻亮星之蓝色星光。紧贴在M78左侧的反射星云,为NGC 2071。而在黝黑的尘埃带上,还可见到赫比格-哈罗天体形成的光斑,以及处在形成阶段的恒星发出之高能喷流。此外,这张影像,也呈现这区域暗淡但无所不在的泛红氢原子辉光。{lamp/}原文:{mtitle title="M78 Wide Field"/}Image Credit &Copyright: Wes HigginsExplanation: Interstellardust clouds andglowing nebulaeabound in the fertileconstellation of Orion.One of thebrightest, M78,is centered in this colorful,wide field view,covering an area north ofOrion's belt.At a distance of about 1,500 light-years, thebluish reflection nebula is around 5 light-years across.Its tint is due to dustpreferentiallyreflecting the blue lightof hot, young stars.Reflection nebula NGC 2071 isjustto the left of M78.Flecks of emission fromHerbig-Haro objects,energetic jets from stars in the process offormation, stand out against the dark dust lanes.The exposure also brings out the region's fainter, pervasivereddish glow of atomic hydrogen gas.
2021年01月21日
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2020-11-05
2020年11月05日:猎户腰带以北-(North of Orion's Belt)
2020年11月05日:猎户腰带以北-(North of Orion's Belt)--原图下载{mtitle title="猎户腰带以北"/}Image Credit &Copyright:Terry Hancock(Grand Mesa Observatory)说明: 在这幅呈现猎户腰带北侧的宇宙景观里,到处都是亮星、星际尘埃云及辉光星云。这片紧邻我们银河系盘面的宽广视野,涵盖约5度(10个满月)的天区。影像的右下角,有明亮泛蓝的反射星云M78。M78的色泽,来自尘埃反射大量源自附近炽热年轻恒星的泛蓝星光。在色泽与其形成鲜明对比的,是此区昏暗蜿蜒划过影像中心的广袤发射星云巴纳德环。左上角,则有以剪影之姿现身的黝黑尘埃云LDN 1622。M78与巴纳德环的距离约为1,500光年,不过LDN 1622很可能近得多,离地球大约只有500光年远。{lamp/}原文:{mtitle title="North of Orion's Belt"/}Image Credit &Copyright:Terry Hancock(Grand Mesa Observatory)Explanation: Bright stars, interstellar clouds of dust and glowing nebulae fillthis cosmic scene,a skyscape just north of Orion's belt.Close to the plane of ourMilky Way Galaxy,the wide field view spans just under 5 degrees or about 10 full moons onthe sky.Strikingbluish M78,a reflection nebula, is at the lower right.M78's tint is due to dust preferentially reflecting theblue light of hot, young stars.In colorful contrast, the red swath of glowing hydrogen gasstreaming through the center is part of the region's faint butextensive emission nebulaknown as Barnard's Loop.At upper left, a dark dust cloud forms a prominent silhouettecataloged as LDN 1622.While M78 and the complex Barnard's Loop are some 1,500 light-yearsaway, LDN 1622 is likely to be much closer, only about 500light-years distant from our fair planet Earth.
2020年11月05日
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2019-12-12
2019年12月12日:妆饰星空-(Decorating the Sky)
2019年12月12日:妆饰星空-(Decorating the Sky)--原图下载{mtitle title="妆饰星空"/}Image Credit &Copyright: Leonardo Julio (Astronomia Pampeana)说明: 在这幅5.5度视野的影像中,亮星、尘埃云、以及辉光云气,妆点着这片紧贴着猎人腰带北缘,靠近银河盘面的星野。在影像右侧,有迷人的蓝色反射星云是M78。M78的色泽,来自尘埃反射较大量炽热年轻恒星的蓝色星光所致。在颜色形成强烈对比的,是横贯过影像中央的泛红辉光云气,它是此区域广大黯淡的发射星云巴纳德圈之一部份。在影像左下角的黑色剪影,则是暗星云LDN 1622。星云M78和巴纳德圈离我们约1,500光年远,然而LDN 1622很可能较密近,离我们美丽的地球或许只有500光年远。{lamp/}原文:{mtitle title="Decorating the Sky"/}Image Credit &Copyright: Leonardo Julio (Astronomia Pampeana)Explanation: Bright stars, clouds of dust and glowing nebulaedecoratethis cosmic scene, a skyscape just north ofOrion's belt.Close to the plane of ourMilky Way galaxy,the wide field view spans about 5.5 degrees.Strikingbluish M78,a reflection nebula, is on the right.M78's tint is due to dust preferentially reflecting theblue lightof hot, young stars.In colorful contrast, the red sash of glowing hydrogen gassweeping through the center is part of the region's faint butextensive emission nebulaknown asBarnard's Loop.At lower left, a dark dust cloud forms a prominent silhouettecataloged as LDN 1622.While M78 and the complex Barnard's Loop are some 1,500 light-yearsaway, LDN 1622 is likely to be much closer, only about 500light-years distant from our fair planet Earth.
2019年12月12日
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2019-09-30
2019年09月30日:巴西上空的猎户座-(Orion Rising over Brazil)
2019年09月30日:巴西上空的猎户座-(Orion Rising over Brazil)--原图下载{mtitle title="巴西上空的猎户座"/}Image Credit &Copyright: Carlos Fairbairn说明: 你最近看过猎户座吗?在接下来这数个月的夜晚,猎户座将越来越早升起,所以将是观赏这个熟悉星座的最佳时机。不过在肉眼里,不要预期猎户座的群星和星云,色彩会如这幅精采相机影像这么缤纷。在这幅上个月用相机摄于巴西.中西区的猎户座全彩影像里,位在左侧最明亮的低温红巨星参宿四为亮橙色。而猎户座数量众多的炽热泛蓝恒星之中,超巨星参宿七在右上角,参宿五在左上角,参宿六在右下角。排成猎户腰带的三颗恒星之中,由下到上分别是参宿一、 参宿二及参宿三。它们诞生于猎户座广被探索的星际云之内,距离都在1,500光年左右。如果你发现位在右上角猎户配剑上的一颗"星",看起偏红而且弥漫,这并非你眼花。它正是有猎户座大星云令名的恒星形成区。{lamp/}原文:{mtitle title="Orion Rising over Brazil"/}Image Credit &Copyright: Carlos FairbairnExplanation: Have you seen Orion lately?The next few months will be the best for seeing this familiar constellation as it rises continually earlier in the night. However, Orion's stars andnebulas won't lookquite as colorful to the eye as they do in this fantastic camera image.In the featured image, Orion was captured by camera showing its full colors last month over a Brazilian copal tree from Brazil's Central-West Region.Here the cool red giantBetelgeusetakes on a strong orange hue as the brightest star on the far left.Otherwise, Orion's hot blue stars are numerous, withsupergiant Rigel balancing Betelgeuse at the upper right, Bellatrix at the upper left, andSaiph at the lower right.Lined up in Orion's belt (bottom to top) areAlnitak, Alnilam, and Mintaka all about 1,500 light-years away, born of the constellation's well studiedinterstellar clouds.And if a "star" toward the upper right Orion's sword looks reddish and fuzzy to you, it should.It's the stellar nursery known as the Great Nebula of Orion.
2019年09月30日
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