2025年11月15日
仙女座与伙伴们
影像提供与版权: Piotr Czerski
说明: 这幅壮丽的河外星系影像展示了仙女座星系，这是距离银河系最近的大型螺旋星系。这幅影像同时完成了梅西耶星表的「三重奏」，包含了仙女座星系，编号为梅西耶31（M31），以及梅西耶32（M32）和梅西耶110（M110），都在同一望远镜的视野中。在这个画面中，M32位于仙女座星系明亮核心的左侧，而M110则在下方偏右的位置。M32和M110本身都是椭圆星系，是较大的螺旋星系仙女座星系的卫星星系。透过结合60小时的宽频和窄频影像数据，这幅深邃的望远镜影像也显示了仙女座螺旋臂上的尘埃带、年轻星团和恒星形成区域的迷人细节，以及前景中微弱的发光氢气云。目前，仙女座星系及其伴星系距离我们所在的银河系大约250万光年。
明日的图片: crossing the plane
Andromeda and Friends
Image Credit & Copyright: Piotr Czerski
Explanation: This magnificent extragalactic skyscape looks toward the Andromeda Galaxy, the closest large spiral galaxy to the Milky Way. It also accomplishes a Messier catalog trifecta by including Andromeda, cataloged as Messier 31 (M31), along with Messier 32 (M32), and Messier 110 (M110) in the same telescopic field of view. In this frame, M32 is just left of the Andromeda Galaxy’s bright core with M110 below and to the right. M32 and M110 are both elliptical galaxies themselves and satellites of the larger spiral Andromeda. By combining 60 hours of broadband and narrowband image data, the deep telescopic view also reveals tantalizing details of dust lanes, young star clusters, and star-forming regions along Andromeda’s spiral arms, and faint, foreground clouds of glowing hydrogen gas. For now, Andromeda and friends are some 2.5 million light-years from our own large spiral Milky Way.
Tomorrow’s picture: crossing the plane
