乌拉圭灯塔上空的银河


   2019-11-19 丨 天文·每日一图 丨 nasachina  丨  No Comment 丨  105

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2019 November 19

Milky Way over Uruguayan Lighthouse
Image Credit & Copyright:
Mauricio Salazar

Explanation: Can a lighthouse illuminate a galaxy? No, but in the featured image, gaps in light emanating from the Jose Ignacio Lighthouse in Uruguay appear to match up nicely, although only momentarily and coincidently, with dark dust lanes of our Milky Way Galaxy. The bright dot on the right is the planet Jupiter. The central band of the Milky Way Galaxy is actually the central spiral disk seen from within the disk. The Milky Way band is not easily visible through city lights but can be quite spectacular to see in dark skies. The featured picture is actually the addition of ten consecutive images taken by the same camera from the same location. The images were well planned to exclude direct light from the famous lighthouse.

乌拉圭灯塔上空的银河
影像来源与版权:
Mauricio Salazar

说明:灯塔能照亮银河系吗?不能,但在这幅特征影像中,乌拉圭的何塞伊格纳西奥灯塔发出的光线间隙似乎与我们银河系的黑暗尘埃带恰好吻合,然而这只是瞬间的巧合。这幅影像右侧的亮点是木星。银河系的中心带实际上是从银盘中看到的中央漩涡盘面。我们透过城市的灯光很难看到银河系盘面,但在黑暗天空下可以看到相当壮观的景象。这幅特征影像实际上是由同一台相机从同一地点连续拍摄的十张照片叠加而成。这些照片经过精心设计,消除了著名灯塔的直射光。

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