2017年06月27日:共照耀星云后方的M81星系群-（The M81 Galaxy Group through the Integrated Flux Nebula） 2017年06月27日:共照耀星云后方的M81星系群-（The M81 Galaxy Group through the Integrated Flux Nebula）--原图下载{mtitle title="共照耀星云后方的M81星系群"/}Image Credit & Copyright : D. Lopez & A. Rosenberg, IAC说明: 这幅M81星系群的深空影像，同时突显了遥远的星系和邻近的星云。在这幅由80张照片併接而成的影像里，最醒目的是位在右下角最为庞大和宏伟的螺旋星系M81。M81和它上方拥有不寻常丝缕状辉光云气丝的M82，透过重力进行交互作用。此外在影像各处，还可见到M81星系群的其他星系与及隶属于银河系的前景恒星。影像中的这个星系大观园，位在共照耀星云(IFN)的辉光之后方，而这片广袤的弥漫气体和尘埃云则位在我们银河系之内。这些细部结构经过数位强化的红色和黄色IFN，是由西班牙．加那利群岛．泰德天文台最近安装的广视野相机所拍摄。{lamp/}原文：{mtitle title="The M81 Galaxy Group through the Integrated Flux Nebula"/}Image Credit & Copyright : D. Lopez & A. Rosenberg, IACExplanation: Distant galaxies and nearby nebulas highlight this deep image of theM81Group of galaxies. First and foremost in this 80-exposure mosaic is thegrand design spiral galaxyM81, the largest galaxy in the image, visible on the lower right.M81 isgravitationally interacting withM82 just above it,a large galaxy with an unusual halo of filamentary red-glowing gas. Around the image many other galaxies from theM81 Group of galaxies can be seen, as well as many foreground Milky Way stars. This whole galaxy menagerie is seen through the glow of anIntegratedFlux Nebula (IFN), a vast and complex screen of diffuse gas and dust also in ourMilky Way Galaxy.Details of the red and yellow IFN, digitally enhanced, were imaged by a new wide-field camera recently installed at the Teide Observatory in the Canary Islands of Spain.