梅西耶24号：人马座星云
(原标题: Messier 24: Sagittarius Star Cloud)
2024-07-18
浏览次数: 21
与梅西耶著名的深空天体目录中的大多数条目不同，M24不是一个明亮的星系、星团或星云。它是附近的一个空隙，模糊了星际尘埃云，使我们能够看到银河系人马座螺旋臂中的遥远恒星。用双筒望远镜或小型望远镜将视线穿过这个缝隙，你就能透过300光年宽的窗户看到距离地球一万光年甚至更远的恒星。M24明亮的恒星有时被称为小人马座星云，在这张华丽的星空中位于中央左侧。这张望远镜视野覆盖了人马座6度或12个满月的宽度，包括M24中心附近的黑色标记B92和B93，以及朝向银河系中心的其他尘埃云和发光星云。
查看原文解释
Unlike most entries in Charles Messier's famous catalog of deep sky objects, M24 is not a bright galaxy, star cluster, or nebula. It's a gap in nearby, obscuring interstellar dust clouds that allows a view of the distant stars in the Sagittarius spiral arm of our Milky Way galaxy. Direct your gaze through this gap with binoculars or small telescope and you are looking through a window over 300 light-years wide at stars some 10,000 light-years or more from Earth. Sometimes called the Small Sagittarius Star Cloud, M24's luminous stars are left of center in this gorgeous starscape. Covering over 6 degrees or the width of 12 full moons in the constellation Sagittarius, the telescopic field of view includes dark markings B92 and B93 near the center of M24, along with other clouds of dust and glowing nebulae toward the center of the Milky Way.
© Christopher Freeburn