大象的鼻子和大篷车
(原标题: Elephant's Trunk and Caravan)
2021-08-27
浏览次数: 34
就像银河系《Just So Story》中的插图一样，象鼻星云蜿蜒穿过发射星云和年轻星团复杂的IC 1396，位于遥远的仙王座。也被称为vdB 142，在左边看到的宇宙大象的鼻子超过20光年长。通过数字处理，在这张详细的望远镜特写照片中没有可见的恒星，突出了明亮的后掠脊，勾勒出凉爽的星际尘埃和气体的口袋。但这些黑暗的卷须状星云包含着恒星形成的原料，并将原恒星隐藏在其中。距离我们近3000光年，相对暗淡的IC 1396复合体覆盖了天空中一大片区域，跨度超过5度。这张无星图的视野宽度为1度，大约是两个满月的角度大小。当然，下面和右边那些朝着蜿蜒的象鼻子前进的黑影，被一些人称为“商队”。
查看原文解释
Like an illustration in a galactic Just So Story, the Elephant's Trunk Nebula winds through the emission nebula and young star cluster complex IC 1396, in the high and far off constellation of Cepheus. Also known as vdB 142, seen on the left the cosmic elephant's trunk is over 20 light-years long. Removed by digital processing, no visible stars are in this detailed telescopic close-up view highlighting the bright swept-back ridges that outline pockets of cool interstellar dust and gas. But the dark, tendril-shaped clouds contain the raw material for star formation and hide protostars within. Nearly 3,000 light-years distant, the relatively faint IC 1396 complex covers a large region on the sky, spanning over 5 degrees. This starless rendition spans a 1 degree wide field of view though, about the angular size of 2 full moons. Of course the dark shapes below and right, marching toward the winding Elephant's Trunk, are known to some as The Caravan.
© Robert Eder