标签: 至日

夏至的满月

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珊蒂与月晕

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十二月的仲夏夜

2023年12月23日 A December Summer Night Image Credit & Copyright: Ian Griffin (Otago Museum) Explanation: Colours of a serene evening sky are captured in this 8 minute exposure, made near this December’s solstice from New Zealand, southern hemisphere, planet Earth. Looking south, star trails form the short concentric arcs around the rotating planet&#8...

阳光下的183天

2023年12月22日 183 Days in the Sun Image Credit & Copyright: José Zarcos Palma Explanation: A single 183 day exposure with a pinhole camera and photographic paper resulted in this long-duration solargraph. Recorded from solstice to solstice, June 21 to December 21, in 2022, it follows the Sun’s daily arcing path through planet Earth’s skies fro...

托斯卡尼上空的获月

2023年9月30日 A Harvest Moon over Tuscany Image Credit & Copyright: Antonio Tartarini Explanation: For northern hemisphere dwellers, September’s Full Moon was the Harvest Moon. Reflecting warm hues at sunset, it rises behind cypress trees huddled on a hill top in Tuscany, Italy in this telephoto view from September 28. Famed in festival, story, and s...

南半球下午的日行迹

2023年9月23日 Afternoon Analemma Image Credit & Copyright: Ian Griffin (Otago Museum) Explanation: An analemma is that figure-8 curve you get when you mark the position of the Sun at the same time each day for one year. To make this one, a 4×5 pinhole camera was set up looking north in southern New Zealand skies. The shutter was briefly opened each cl...

三条日轨

2023年6月21日 Three Sun Paths Image Credit & Copyright: Marcella Giulia Pace & Giuseppe De Donà Explanation: Does the Sun follow the same path every day? No. The Sun’s path changes during the year, tracing a longer route during the summer than the winter. Pictured here, the Sun’s arc was captured from noon to sunset on three days, from hig...

春分的羽蛇神金字塔

2023年3月19日 Equinox at the Pyramid of the Feathered Serpent Image Credit & Copyright: Robert Fedez Explanation: To see the feathered serpent descend the Mayan pyramid requires exquisite timing. You must visit El Castillo — in Mexico’s Yucatán Peninsula — near an equinox. Then, during the late afternoon if the sky is clear, the pyramid&#...

北纬63度的日晕

2022年12月21日 Sun Halo at Sixty-three Degrees North Image Credit & Copyright: Goran Strand Explanation: Happy Solstice! Today is the December solstice, marking an astronomical beginning of summer in the southern hemisphere and winter in the north. On its yearly trek through planet Earth’s skies, at this solstice the Sun reaches its southern most dec...