月球掩星金星
(原标题: Lunar Occultation of Venus)
2022-06-02
浏览次数: 15
5月27日，金星作为晨星冉冉升起，在黎明前已经布满行星的天空中，靠近渐弱的新月。它在天空中离月亮的新月很近，世界各地的天文观测者都能看到第二和第三亮的天体信标的会合。但从东南亚和印度洋的轨道上看，月球实际上是在月球掩星中经过金星前面的。在这个动画gif中，75%的金星被照亮的圆盘接近并刚刚开始消失在阳光照耀的月球西南边缘后面。用来制作这张图片的望远镜是在当地时间凌晨4点50分左右从印度洋留尼旺岛拍摄的，当时月球和金星非常接近东方地平线。当时金星距离留尼汪岛超过1.8亿公里，而月球距离只有40万公里左右。大约50分钟后，金星从月球后面出现。
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On May 27 Venus rose as the morning star, near the waning crescent Moon in a predawn sky already full of planets. It was close on the sky to the Moon's crescent and a conjunction of the second and third brightest celestial beacons was enjoyed by skygazers around the world. But seen from locations along a track through southeast Asia and the Indian Ocean the Moon actually passed in front of Venus in a lunar occultation. In this animated gif the 75 percent illuminated disk of Venus approaches and just begins to disappear behind the sunlit southwestern lunar limb. The telescopic frames used to construct it were captured from Reunion Island in the Indian Ocean around 4:50am local time, with the Moon and Venus very close to the eastern horizon. At the time Venus was over 180 million kilometers from Reunion Island, compared to a lunar distance of a mere 400 thousand kilometers or so. About 50 minutes later Venus emerged from behind the Moon.
© Quentin Gineys