Autumn Equinox 秋分 2016

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Iwaya-Iwakage Megalith Group   岩屋岩蔭遺跡巨石群

Autumn Equinox Observations   秋分の観測会

The first three days of autumn this year were rainy, and we could not make any spotlight observations. Finally, it dawned sunny on the 25th of September. The three photos were taken at Iwaya-Iwakage on that day.

秋分の観測会22, 23, 24日は雨天のためスポット光を見ることはできませんでした。ようやく25日に晴れ、添付写真はそのときのものです。

20160925_01

Photo 20160925_01.  This photo was taken from the outside, at the top of stone G, looking into the chamber of Iwaya-Iwakage. See the triangle of light at the lower left corner of the photo.  It is the spotlight beautifully striking the flat plane of stone F at around 40 degrees.

Photo 20160925_01 は、G石の上から撮影。F石の約40度のフラットな平面が美しい。内部へ射し込む三角形のスポット光が左下に見えます。

20160925_02

Photo 20160925_02.  Iwaya-Iwakage is flooded with light as visitors look on. The photo was taken around 12:00 noon.

Photo 20160925_02 は、見学者が光を浴びているところ。正午12:00頃。

20160925_03

Photo 20160925_03. Just before the light vanishes. Note that, after 30 days, the triangular spotlight will take on the same shape as the Sekimen flat stone (which can be seen on the left of the spotlight) 60 days before the winter solstice. This may be hard to believe, but it is true, as we will be reporting next month. Isn’t it amazing?

Photo 20160925_03 は、まもなく光が消えるとき。注目すべき点は、あと30日経過すると、三角形のスポット光は左の石面(Sekimen)の形と一体になる(冬至60日前)。

Spotlights and calendar accuracy

The spotlight observations increase the accuracy of the Kanayama Megaliths calendar. During the 30-day period(23 Sep. –  23 Oct.)the observed light moves a large amount every day. It is the fastest-moving time of the year. That is to say, just about now is the most important observation season!

金山巨石群はスポット光観測によって、暦の精度を上げています。ちょうど秋分から30日間のスポット光観測(23 Sep.—23 Oct.)が、光が1日に移動する距離が大きいときだから。つまりまさに今が観測シーズンです。

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