行星节上的反反射线
(原标题: Anticrepuscular Rays at the Planet Festival)
2024-07-19
浏览次数: 16
对一些人来说，当7月11日太阳落山时，这些微妙的光影带横跨天空。这一波段被称为反气旋射线，是在日落时分，西方地平线附近的一大片云团在大气中投下长长的阴影时形成的。由于相机的视角，光线和阴影似乎在捷克共和国布尔诺一座14世纪山顶城堡上方的一点上向东方（对面）地平线汇聚。在前景中，地球上的居民正在布尔诺天文台和天文馆下面的公园里享受该地区一年一度的行星节。虽然黄昏和反黄昏光线是相对常见的大气现象，但这个节日的10米直径的充气球体代表太阳系的天体，在地球上不太常见。
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For some, these subtle bands of light and shadow stretched across the sky as the Sun set on July 11. Known as anticrepuscular rays, the bands are formed as a large cloud bank near the western horizon cast long shadows through the atmosphere at sunset. Due to the camera's perspective, the bands of light and shadow seem to converge toward the eastern (opposite) horizon at a point seen just above a 14th century hilltop castle in Brno, Czech Republic. In the foreground, denizens of planet Earth are enjoying the region's annual Planet Festival in the park below the Brno Observatory and Planetarium. And while crepuscular and anticrepuscular rays are a relatively common atmospheric phenomenon, this festival's 10 meter diameter inflatable spheres representing bodies of the Solar System are less often seen on planet Earth.
© Pavel Gabzdyl