2021年的满月
(原标题: The Full Moon of 2021)
2022-01-01
浏览次数: 13
2021年的满月在这个跨越一年的天文摄影项目中闪耀，这是一个熟悉的月球近侧在每个最亮的月相的合成肖像。按月排列，一年以从顶部开始的条纹进行。这些条纹是用同样的相机和镜头拍摄的，它们来自满月的图像，都是在相同的像素尺度下组合起来的。这些条纹看起来仍然不匹配，但它们表明，满月的角度大小在一年中的变化取决于它与印度加尔各答的距离。日历月，满月的名称，以公里为单位的距离，以及每个条纹的角度大小。角尺寸的单位是弧分，对应于1/60度。最大的满月发生在五月的近地点附近。最小的月亮在远地点附近，也就是12月最远的满月。当然，在2021年的两次月食期间，5月和11月的满月也会进入地球的阴影。
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very Full Moon of 2021 shines in this year-spanning astrophoto project, a composite portrait of the familiar lunar nearside at each brightest lunar phase. Arranged by moonth, the year progresses in stripes beginning at the top. Taken with the same camera and lens the stripes are from Full Moon images all combined at the same pixel scale. The stripes still look mismatched, but they show that the Full Moon's angular size changes throughout the year depending on its distance from Kolkata, India, planet Earth. The calendar month, a full moon name, distance in kilometers, and angular size is indicated for each stripe. Angular size is given in minutes of arc corresponding to 1/60th of a degree. The largest Full Moon is near a perigee or closest approach in May. The smallest is near an apogee, the most distant Full Moon in December. Of course the full moons of May and November also slid into Earth's shadow during 2021's two lunar eclipses.
© Soumyadeep Mukherjee