今宵は十六夜の月

　昨晩は満月でしたが、今日は旧暦で１月１６日ですから今宵は十六夜の月です。ほんの少し右上が欠けてるので、今宵から下弦の月です。これが明朝西の空に沈むとき欠けた部分【弦】が下になるので下弦の月です。現在、月面から地球を見ると真っ暗で何も見えないでしょう。

Dear earthlings

　Last night it was a full moon, but today is January 16th on the lunar calendar, so tonight is the sixteenth night of the moon. As you notice, there is a small missing part in the upper right corner, so it is a waning moon from tonight. When it sets in the western sky tomorrow morning, the missing part (the crescent) will be at the bottom of the moon, so it is a waning moon. If you look at the Earth from the surface of the moon now, the earth where we live will be pitch black and you will not be able to see anything.

https://ttsreader.com/ja/...

出ました！・・・今年２回目の三日月

　西の空に出ました正に上弦の月。暫くぶりの三日月です。つまり、今宵は旧暦の１月3日ですから中国など東南アジア諸国では春節で、多くの人々は故郷で過ごしてます。

　よく見ると影の丸い部分が薄く見えますね。これはおそらくインド洋上に映ってる太陽が月面に反射し、地球照と言われるものです。それにしても細い月です。カレンダーがなかった大昔の日本でも、この月を見て今日は３日と知ったのでしょう。

Dear my Facebook friends who are interested in astronomy and great music

　This evening, a waxing moon has appeared in the western sky. It's been a while since we've seen a crescent moon. Tonight is the third day of January on the lunar calendar, which means the New Year in China and other Southeast Asian countries, so that many people may be spending at their parents' home, I guess.

　If you look closely, you can see that the round part of the shadow appears faint. This is probably the sun reflected over the Indian Ocean on the surface of the moon, this phenomenon is known as earthshine. Even so, it is quite a thin moon. Even in ancient Japan, when there was no calendar, people would have known that today was the 3rd day by looking at this moon.

https://ttsreader.com/ja/...

今宵は１５日で十五夜です。

　今宵は珍しく「１５日で十五夜」です。これは今月がたまたま、現行暦【太陽暦】と旧暦【太陰太陽暦】の日付が一致してるからです。今日は旧暦で１１月１５日です。昔の人は満月を見て今日が１５日と知ったのでしょう。

　ところで、写真を撮って拡大したら分かったのですが、偶然にも、月面の右上に飛行機の姿が映ってます。クリックし拡大してご覧ください。おそらく、大阪方面から仙台方面に飛んでいるのでしょう。一方、現在、月面から地球を眺めると、地球は夜の部分のみで何も見えないと考えられます。

　なお、月の右上の星は木星です。その右の星は牡牛座のアルデバランです。月の左にある橙色した星は火星です。  

   

Dear my overseas friends who like both of nature and great music

　Tonight is unusually the "fifteenth night" of full moon. This is because this month the dates of the current calendar (solar calendar) and the lunar calendar (lunisolar calendar) happen to coincide. Today is November 15th on the lunar calendar. People in the past before Edo period would have known that today was the 15th by looking at the full moon in Japan.

　By the way, I took a photo and as soon as I enlarged it, by coincidence, I could see an airplane in the upper right corner of the moon's surface. It is probably flying from the Osaka towards Sendai. Please click to enlarge it. Meanwhile, if you look at the Earth from the surface of the moon now, it is thought that only the night part of the Earth would be visible so that nothing would be visible.

　On the other hand, the star to the upper right of the moon is Jupiter. The star to the right of Jupiter is Aldebaran (in Taurus). The orange star to the left of the moon is Mars, when we see them in Japan situated in Northern hemisphere.

https://ttsreader.com/ja/... 　

一段と、明るい部分が広がって来た今宵の月

　今宵も月齢１０の「上弦の月」がよく見えます。暗黒の宇宙空間の中、太陽の光が当たっていることがよく分かります。ですから、怖いですが、宇宙は本当に真っ暗なのです。日中明るいのは、星の一つである太陽に地球の太陽側が照らされているだけなのです。

　ところで、昨日ははっきり見えませんでしたが、中央部に大きなクレーターが見えます。画像を拡大してご覧ください。中の一部に太陽光が当たっている部分と当たってない部分があることから、深さもかなり深いのでしょう。私の推定では、クレーターの直径は２００㎞ほどと想います。満月まであと５日です。

　ニュージーランドのセーラさん、日本で見る今宵の月は右側が光ってますが、そちらで見ると左側が光っているでしょうか。

Dear my overseas friends who are interested in astronomy and great music

　Tonight, the waxing moon which is 10 days phase, can be seen clearly in Japan. We can clearly see the sunlight shining on the surface in the dark outer space. So, although it may be scary, outer space is really pitch black. The only reason it is bright during the daytime is because the sun, one of the stars, is shining on the sun side of our earth.

　By the way, although it wasn't clear yesterday, we can see a large crater in the center of the moon surface. Please enlarge the image to see. There are parts inside that are shining on the sunlight and parts that are not, so it must be quite deep, I guess. I estimate that the diameter of the crater is about 200 km. There are 5 days left until the next full moon.

     

Ms. Sarah in New Zealand

　When we see from Japan, the right side of the moon is shining tonight, but do you see the left side shining when you look it from NZ?

https://ttsreader.com/ja/...

月の欠けた部分がうっすら見える

　今朝５時４０分頃、南東の空に、月齢２７．３の「下弦の月」が出てました。快晴のためはっきり見え、すぐにカメラに収めました。ご存じの通り、１１月は太陽暦【現行歴】と太陰太陽暦【旧暦】の日付が同じでしたが、実は１２月も太陽暦と太陰太陽暦の日付が一致してます。このため、１２月３日は西南の空に三日月が出て、１２月１５日は十五夜です。

　ところで、今朝の細く欠けた月をよく観察すると、写真の通り、欠けた部分がうっすらと見えてます。この部分に太陽の光が当たることはないのに、何故うっすら見えるのでしょう？

　これは、地球に当たった太陽光が反射して月面をうっすら照らしています。これは「地球照」と呼ばれる現象です。私の想像では、日本で見る場合は、太平洋に映る太陽光が月を照らしていると想われます。

　私たちが住む地球でも、満月の夜には、月は光を発してないのに月の光にかなり照らし出されます。同様に、月面も明るい地球に照らされることになります。特に、地球から見て三日月や新月に近く月の表面が大きく欠けている状態のとき、月から見る地球は満月のように明るいことから、その光に照らされることになります。月が大きく欠けている時ほど「地球照」は良く見えます。

Dear my overseas friends who like both of nature and great music

　The simultaneous interpretation for your understanding will be done after my radio gymnastics held in the nearby park and breakfast in Japan time.

.....................................................

　At around 5:40 this morning, a waning moon with the phase of 27.3 appeared in the southeastern sky. It was a clear dawn, so I could see it clearly so that I quickly captured it on camera. As you know, the solar calendar [current calendar] and the lunisolar calendar [old calendar] have the same dates in November, but in fact, the solar calendar and the lunisolar calendar also have the same dates in the next December. For this reason, the waxing moon of the phase of 3 appeared in the southwestern sky on December 3rd, and December 15th is the fifteenth night of full moon.

　By the way, if I looked closely at the waning moon this morning, I could see that the crescent part is faintly visible, as in the photo. Why is it faintly visible in this part of the surface of the moon even though the sunlight does not shine on this part?

　This is because the sunlight hitting the Earth is reflected and faintly illuminates the surface of the moon. This is a phenomenon called "earthshine." In my imagination, when viewed it from Japan, the sunlight reflected on the Pacific Ocean is illuminating the moon.

　Even on Earth where we live, on nights of a full moon, the moon is illuminated by moonlight, even though the moon does not emit any light. Similarly, the surface of the moon is also illuminated by the bright Earth. In particular, when the moon is close to a waning crescent or new moon, the Earth seen from the moon appears as bright as a full moon. The more the moon is missing, the better the "earthshine" is visible.

https://ttsreader.com/ja/...

今宵は十六夜の月

　今宵の月が「十六夜」(いざよい)の月です。昨晩のように、太陽光が正面から当たると満月ですが、今宵、よく見ると、右上がほんの少し欠けてます。そして、山の凸凹も見えますね。

　それにしても、月面の紋様は、今宵のように、日本で東の空に昇ったときは「ウサギが餅をついてる」ように見えます。その後、日に日、月面の約１５分の1ずつ右上が欠けて行きます。そして、ついに全て欠けると１０月３日で、この日は旧暦(太陰太陽暦)で９月１日となり、その後は、いよいよ晩秋になります。

　今日以降は、下弦の月となり、月の出る時刻が毎晩５０分前後ずつ遅くなり、そして、１０月４日からは、上弦の月となり、夕方西の空に細い月となって再度現れます。

Dear my friends who are interested in phase of the moon

　Tonight's moon is the Izayoi moon in Japanese that means 16th night of the moon phase. When the sunlight hits it head-on, like last night, it's a full moon, but if we look closely tonight's moon, we can see that a small part of the upper right corner is waning. You can also see the unevenness of the mountains on the moon surface.

　Even so, when the moon rises in the eastern sky in Japan, like tonight, the pattern on its surface looks like a rabbit pounding rice cake. After that, about one fifteenth of the moon's surface is missing from the upper right corner each day. When it is finally missing, it will be October 3rd, which is September 1st in the lunisolar calendar, and after that, late autumn will finally come in Japan.

　From today onwards, the time the moon rises will be around 50 minutes later each night, and from October 4th it will reappear as a thin moon in the western sky in the evenings.

https://ttsreader.com/ja/...

十五夜は満月でなく、今宵が満月

　昨晩【９月１７日】は「十五夜」でしたが、群馬県高崎市の空は生憎、曇っていたので月が見えませんでした。しかし、今朝４時に窓を開けたら、空はよく晴れ渡っており、ご覧の通り、西の空に黄色い満月が美しく輝いてました。この時間帯では見る人が少ないのでしょう。私には幾分か月が寂しそうに見えました。

　私たちは、東の空に昇った「十五夜」の月を満月と思いがちですが、調べてみると、昨晩は月齢１４．７であり、実際によく観察すると、例年、確かに、左上が微かに欠けてるので満月でありません。しかし、月が西の空に行ったころ、つまり、１０時間も経過すると、ご覧の通り、満月になってます。

　ところが、写真を見てお気づきでしょう。東に昇った時の【いわゆる、兎が月が餅をついてるような】月面の柄とは異なってます。向きが右回りに９０°ほど変化してます。これは地球が反時計回りに自転しているためで、時間の経過と共に、私たちの見る角度が変化したのです。

　東の空に昇るときでも、赤道近くや南半球で見ると日本で見る月とはかなり異なって見えることになります。これは地球の緯度の違いによるものです。日本で今夜１８日、東に昇る月は、月齢１５．３ですから満月です。兎が餅をついてるかの如くに見えでしょう。

Dear my friends who are interested in phase of the moon

　Last night [September 17th] was the "Harvest Moon", but unfortunately the sky in Takasaki City, Gumma Prefecture was cloudy so that we couldn't see the moon. However, when I opened the window at 4am this morning, the sky was clear and, as you can see in the photo, the yellow full moon was shining beautifully in the western sky. There probably aren't many people to see it at this time. To me, the moon looked a little lonely.

　In General, we tend to think that the Harvest Moon is full moon" that rises in the eastern sky, but when I looked it up, I found that last night's phase of the moon was 14.7, and when I looked closely, I found that it was not a full moon every year, because there is a slight eclipse in the upper left. However, when the moon went to the western sky, that is, after 10 hours had passed, it became a full moon, as you can see in the photo.

　However, if you look at the photo, you will notice that the pattern on the moon's surface is different from when it rises in the east [like a rabbit pounding rice cakes on the moon]. The direction has changed by about 90 degrees clockwise. This is because the Earth rotates anticlockwise, and the angle from which we view the moon changes over time.

　Therefore, even when it rises in the east, the patterns on the moon's surface will look different depending on the country. This depends on the latitude of the Earth from viewing it by humans. If you view it near the equator or in the southern hemisphere, it will look quite different from viewing in Japan. Tonight, the 18th, the moon rising in the east in Japan will be 15.3 in phase, making it a full moon. It will look like a rabbit pounding rice cakes as usual.

https://ttsreader.com/ja/...

日に日に大きくなってゆく上弦の月

　今宵６時１５分に撮影した西南の空に浮かぶ月です。今日は旧暦【太陰太陽暦】で８月5日ですから、月齢５の月です。まだ、周囲が少し明るいので輪郭や月面がはっきりしませんが、右側が光ってます。

　現在、この月を南半球で見ると左側が光っています。赤道直下で見ると下が光り、お椀の舟のようでしょう。いずれにしても、西に沈むとき弦が上になりますから上弦の月です。

　それはそうと、深夜零時に南の空高く「水瓶座」が見えるでしょうか。私はそれまで起きていられないかもしれません。それでも、今日は「白露」ですから、真南に「水瓶座」は必ずあります。

Dear my Facebook friends

　This photo was taken at 6:15 tonight in Japan, showing the moon floating in the southwestern sky. Today is the 5th day of August in the lunisolar calendar, so the phase of moon is 5 days old. It is still a little bright around the edges so the outline and surface of the moon are not clear, but the right side is glowing.

　Currently, if we look at this moon in the southern hemisphere, the left side is glowing. If we look at it directly on the equator, the bottom is glowing, so that it looks like a bowl-shaped boat. In any case, when it sets in the west the string is at the top, so it is a waxing crescent moon.

　By the way, will Aquarius be visible high in the due southern sky at midnight? I may not be able to stay awake until then. Still, since today is Hakuro that means White Dew, Aquarius will definitely be due south.

https://ttsreader.com/ja/...

地球も暗黒の宇宙に浮いている

　今朝早く撮った月齢２０の下弦の月です。やはり、右側の弦に当たる部分に凹凸が見え、月面にたくさんのクレーターがあることが分かります。同時に、暗黒の宇宙に浮かび、太陽光に照らされてる感じがよく分かります。私たちが住む地球も同様に、暗黒の宇宙にぽっかり浮いてます。

　若き日、インドのカルカッタ市に滞在してましたが、月を見るとき、度々、屋上で仰向けになって見たものです。それは月がほぼ真上を通過するからです。一方、不思議なことに、三日月が西の空に沈むとき、お椀の舟のような形になりました。

　また、北極星の角度も低くて驚きました。カルカッタ市の緯度は北回帰線より少し南であることから、このような現象が起こります。正午前後では、外に立っても周囲に自分の影がありません。影は私が踏んでました。太陽がほぼ真上から照っているからです。夏至の頃は自分の影が少し南にできました。このように地球上の場所により、天体の見える位置が変わります。

　ところで、現在の月は月齢２０ですが、あと１０日後には新月となり、この時、北米では、この月が太陽を隠し、皆既日食が起こると計算されてます。

Dear my overseas friends

　This is a waning moon at an age of 20 taken by me early this morning Japan time. Unevenness can be seen on the right side, indicating that there are many craters on the moon's surface. At the same time, we can clearly feel that the moon is floating in dark space and being illuminated by sunlight. The Earth we live on is also floating in the dark universe.

　When I was 20's, I lived in Calcutta, India, and when I looked at the moon, I would often lie on my back on the rooftop. That's because the moon passes almost overhead. On the other hand, strangely enough, as the crescent moon set in the western sky, it was the shape of a bowl boat.

　I was also surprised at how low the angle of Polaris was. This phenomenon occurs because the latitude of Calcutta-city is situated in slightly south of the Tropic of Cancer. Around noon, I couldn't see my shadow even if I stood outside. I stepped on my shadow. This is because the sun is shining almost directly overhead. Around the summer solstice, my shadow formed a little to the south. In this way, the visible position of celestial bodies changes depending on our location on Earth.

　By the way, the current phase of the moon is 20, therefore it will be a new moon in 10 days, and it is calculated that the moon will hide the sun. It will be caused a total solar eclipse in North America.

https://ttsreader.com/ja/...

今宵は下弦の月

　現在、東の空に出ている月齢１９の月です。この月が西の空に沈むとき、弦の部分が下になるので下弦の月です。

　直径２００Kほどあると推定されるクレーターが右上に見えます。私たちを載せた地球も、この月の姿と同様に暗黒の宇宙に浮かび、太陽光が当たっています。

Dear my friends as earthlings

　The moon is currently in the eastern sky and the moon phase is 19 tonight. When this moon sets in the western sky, the string of the moon is at the bottom, so it is a waning moon.

　A crater estimated to be about 200km in diameter can be seen in the upper right. The Earth on which we are placed, also floats in a dark space, just like the moon, and is illuminated by sunlight.

https://ttsreader.com/ja/...