2024年的日行迹

2025年1月2日

Solar Analemma 2024
Image Credit & Copyright: Betul Turksoy

Explanation: Recorded during 2024, this year-spanning 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 only at 1pm local time on clear days from Kayseri, Turkiye. Of course the Sun’s position on the 2024 solstice dates was at the top and bottom of the curve. They correspond to the astronomical beginning of summer and winter in the north. The points along the curve half-way between the solstices, but not the figure-eight curve crossing point, mark the 2024 equinoxes and the start of spring and fall. Regional peaks and dormant volcano Mount Erciyes lie along the southern horizon in the 2024 timelapse skyscape.

Tomorrow’s picture: eclipse pair

2024年的日行迹
影像提供与版权: Betul Turksoy

说明: 这系列摄于2024年一整年期间的影像，呈现了太阳每天在地球天空中运动的季节性漂移图案。这种图案称为日行迹，而影像中这个8字形的日行迹，则是建构自每个睛天摄于土耳其开塞利市当地时间下午1时的太阳影像。想当然耳，2024年夏至和冬至的太阳，位于曲线的顶部和底部，而这二个点分别标志了天文学北半球夏季和冬季的起点。夏至与冬至之间的中点（春分与秋分），则是2024年春季和秋季的起点，然而，这2个中点并不在8字形曲线的交叉点上。 在这组缩时天空景象里，南方地平线上有当地的山峰以及休眠中的埃尔吉耶斯火山。

明日的图片: eclipse pair