日食八字曲线计划
(原标题: The Solar Eclipse Analemma Project)
2025-03-20
浏览次数: 18
从2024年3月10日到2025年3月1日，这一系列合成的图像揭示了太阳在地球天空中每日运动的季节性漂移模式。这张8字曲线被一些人称为8字曲线，它是在UTC时间18:38从德克萨斯州斯蒂芬维尔以南的同一地点拍摄的。太阳在2024年至日（6月20日和12月21日）的位置将位于曲线的顶部和底部，对应于天文学上北方夏天和冬天的开始。曲线上位于两至点中间的点就是春分。2024年9月22日的春分和2025年3月20日（今天）的春分是北方秋天和春天的开始。由于其中一次曝光是在2024年4月8日UTC时间18:38:40从斯蒂芬维尔地点拍摄的，这个8字曲线项目也揭示了日全食期间地球天空中的日冕。
查看原文解释
Recorded from 2024 March 10, to 2025 March 1, this composited series of images reveals a pattern in the seasonal drift of the Sun's daily motion through planet Earth's sky. Known to some as an analemma, the figure-eight curve was captured in exposures taken on the indicated dates only at 18:38 UTC from the exact same location south of Stephenville, Texas. The Sun's position on the 2024 solstice dates of June 20 and December 21 would be at the top and bottom of the curve and correspond to the astronomical beginning of summer and winter in the north. Points that lie along the curve half-way between the solstices would mark the equinoxes. The 2024 equinox on September 22, and in 2025 the equinox on March 20 (today) are the start of northern fall and spring. And since one of the exposures was made on 2024 April 8 from the Stephenville location at 18:38:40 UTC, this analemma project also reveals the solar corona in planet Earth's sky during a total solar eclipse.
© Hunter Wells