Image Credit & Copyright: Stefan Lenz
Explanation: If Scorpius looked this good to the unaided eye, humans might remember it better. Scorpius more typically appears as a few bright stars in a well-known but rarely pointed out zodiacal constellation. To get a spectacular image like this, though, one needs a good camera, a dark sky, and some sophisticated image processing. The resulting digitally-enhanced image shows many breathtaking features. Diagonal across the image right is part of the plane of our Milky Way Galaxy. Visible there are vast clouds of bright stars and long filaments of dark and intricate dust. Rising vertically on the image left are dark dust bands known as the Dark River. Several of the bright stars on the left are part of Scorpius’ head and claws, and include the bright star Antares. Numerous red emission nebulas, blue reflection nebulas, and dark filaments became visible as the deep 17-hour expo image developed. Scorpius appears prominently in southern skies after sunset during the middle of the year.
Tomorrow’s picture: Crescent Nebula Collaboration
影像提供与版权: Stefan Lenz
说明: 如果肉眼所见的天蝎座如此精采，人们会对它印象更深刻。在著名但咸少讨论的黄道 星座天蝎座之内，通常只能见到寥寥数颗星。如想得到上面这么精采的影像，需要有一部好相机、清澈幽暗的天空和功能完备的影像处理软体。例如上面这幅数位强化影像，就呈现了许多令人屏息的景观。其中，斜贯过影像右侧的，是银河系的部分盘面，上头有成团的亮星和颀长的丝状黝黑尘埃。左侧向上伸展的结构，是名为暗河的黝黑尘埃带。它附近包括心宿二在内的亮星，则构成天蝎的头和爪。在这幅17小时的长曝光影像里，还可见到难以数计的泛红发射星云、泛蓝反射星云和丝状的黝黑尘埃云。在年中之时，天蝎座是南天日落后很醒目的星座。