带注解的银心影像


   2019-09-27 丨 天文·每日一图 丨 nasachina  丨  No Comment 丨  117

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2019 September 27

The Annotated Galactic Center
Image Credit & Copyright:
Miguel Claro (TWAN, Dark Sky Alqueva)

Explanation: The center of our Milky Way galaxy can be found some 26,000 light-years away toward the constellation Sagittarius. Even on a dark night, you can't really see it though. Gaze in that direction, and your sight-line is quickly obscured by intervening interstellar dust. In fact, dark dust clouds, glowing nebulae, and crowded starfieds are packed along the fertile galactic plane and central regions of our galaxy. This annotated view, a mosaic of dark sky images, highlights some favorites, particularly for small telescope or binocular equipped skygazers. The cropped version puts the direction to the galactic center on the far right. It identifies well-known Messier objects like the Lagoon nebula (M8), the Trifid (M20), star cloud M24, and some of E.E. Barnard's dark markings on the sky. A full version extends the view to the right toward the constellation Scorpius, in all covering over 20 degrees across the center of the Milky Way.

带注解的银心影像
影像来源与版权:
Miguel Claro (TWAN, Dark Sky Alqueva)

说明:我们银河系的中心位于人马座方向、距离我们约26,000光年远。然而,即使在漆黑的夜晚,你也不可能真的看到它。因为往那个方向凝视,你的视线很快会被居间的星际尘埃所遮挡。实际上,黑暗尘埃云、炽热星云和拥挤的星场都聚集在富饶的银道面和银河系中心区域。这幅带注解的影像是由多张黑暗的天空照片拼接而成,呈现了使用小型望远镜或双筒望远镜的天文观测者最喜欢拍摄的一些天体。这幅经过裁剪的影像标出了位于最右侧的银心方向。它还呈现了著名的梅西耶天体,如礁湖星云(M8),三叶星云(M20),恒星云M24,以及天空中的一些巴纳德暗星云。这幅完整影像的视野朝着右侧天蝎座方向延伸,总共覆盖了银河系中心超过20度的天区。

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