Moon Trail | 2023/3/4 – 2023/3/11 11pm | Yuen Long, Hong Kong © Matthew Chin
If you have an open view, you can take Moon photos in same time and same location from around lunar day 6 to 21, depend if any obstruction in your view. A Moon curve (but not the analemma shape 8 ) will be obtained, its position will vary in each month in a year. I took between day 13 to 20 as West side is obstructed.
The curve forms as Moon rises daily with a delay about 50 mins (1.035028 days) from previous day. In the photo, West is on the top, and East is in the bottom.
Equipment : Nikon D750 with 17-35mm, 300mm lens
Processing: the different exposure Moon is resized from 300mm image and pasted to the position it is on the 17mm photo.
For Lunar Analemma, please refer my 2021 image:
© Copyright by Matthew Chin
Chinese follows. 中文隨後
一個月內部分晚上同時(11pm)同地(元朗)的月流跡
因為月亮每天遲約50分鐘升起,如果同時同地拍攝,大致由農曆初六至廿一日,便會獲得如圖的月流跡。我由農曆十三至廿日子夜前(11pm)拍攝(東/西面如果没有遮擋,日子可以延長更多)。
這是一個弧線(但不是月行跡的 8字),月球位置每個月份也會不同。月球是東升西落,雖然拍出來的月亮像由西面(照片上面)移向東面(照片下面)。
元朗月行跡 可參看我2021年的影像(上link) 。
( 後製: 不同曝光的月亮從300毫米圖像調整大小並貼到它在17毫米照片上的位置。
相機: 尼康 D750 配備 17-35毫米 和 300毫米鏡頭,無引導,照片用不同的曝光拍攝。 )
© Matthew Chin 版權所有
註: 澄清一下有些人同時同地拍攝月亮又砌成8字/S字,
所以我只叫這月流跡,不是8字月行跡。
另外,文內寫了農曆日子,不會全月每天同時見月,同時間大約有16天可見月亮。
月升/月落在低位置時,因空氣污染和光的波長,常是黄/橙/紅色。