志蓮淨苑明心燈日晷時計的藝術與科學

metropop

22°20' 21.9"N 114°12'16"E

Location: Nan Lian Garden, Chi Lin Nunnery, Hong Kong

這些日晷是由 gnomonist Simone Bartonlini 設計

左圖為垂直日晷 (下午時分), 右圖為"黃道與二十四節氣"(簡圖.實際上地球軌道是橢圓)
角度為黃經坐標

晷針插在7月22日(大暑) 15:15 上, 能讀出當時下午時間及二十四節氣

vertical sundial 的一變種

能讀出當日太陽的

赤緯(Declination)(赤道坐標),但沒有赤徑(Right Ascension) 或時

仰角(Elevation)(地平坐標), 但沒有方位角(Azimuth)

當中的日行跡 Analemma, 祗有顯示正午12時. 沒有其他時份的日行跡., 祗能說是1/2 個日晷

左圖角度為黃經(黃道經度 ecliptic longitude)

春分點已經因為地球繞日軌道的歲差從白羊座向雙魚座了祗能作為星相學上的符號,而非天文學上的星座坐標

能讀出當時上午時間及黃道十二宮

均時差的修正:

數字為秦朝小篆文

Al-biruni style of depiction of moon phase。是由地球軌道的天北軸（NCP)往南方觀望。月球以反時針方向環繞地球轉動。橙色箭咀指着陰曆十五（望）時的月相。上弦在~7點方向。其怪月晷不知在哪。

有些月相黑白/陰影有錯體，左下方黑白顚倒:

此日晷的當地平太陽時(local mean time) 要加上 23分11秒=北京時間(UTC+8)

references:

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