月偏食

月偏食

ByNASA中文

2023年10月29日 A Partial Lunar Eclipse Image Credit & Copyright: Orazio Mezzio Explanation: What’s happened to the Moon? Within the last day, part of the Moon moved through the Earth’s shadow. This happens about once or twice a year, but not every month since the Moon’s orbit around the Earth is slightly tilted. Pictured here, the face of a full Hunter’s Moon is shown twice from Italy during this partial lunar eclipse. On the left, most of the Moon appears overexposed except for the eclipsed bottom right, which shows some familiar lunar surface details. In contrast, on the right, most of the (same) Moon appears normally exposed, with the exception of the bottom right, which now appears dark. All lunar eclipses are visible from the half…

大折射镜与月食

大折射镜与月食

ByNASA中文

2021年11月26日 Great Refractor and Lunar Eclipse Image Credit & Copyright: Laurie Hatch Explanation: Rain clouds passed and the dome of the Lick Observatory’s 36 inch Great Refractor opened on November 19. The historic telescope was pointed toward a partially eclipsed Moon. Illuminated by dim red lighting to preserve an astronomer’s night vision, telescope controls, coordinate dials, and the refractor’s 57 foot long barrel were captured in this high dynamic range image. Visible beyond the foreshortened barrel and dome slit, growing brighter after its almost total eclipse phase, the lunar disk created a colorful halo through lingering clouds. From the open dome, the view of the clearing sky above includes the Pleiades star cluster about 5 degrees from Moon and Earth’s shadow. Notable APOD Submissions: Lunar…

在地球影子的边缘

在地球影子的边缘

ByNASA中文

2021年11月25日 At the Shadow’s Edge Image Credit & Copyright: Jean-Francois Gout Explanation: Shaped like a cone tapering into space, the Earth’s dark central shadow or umbra has a circular cross-section. It’s wider than the Moon at the distance of the Moon’s orbit though. But during the lunar eclipse of November 18/19, part of the Moon remained just outside the umbral shadow. The successive pictures in this composite of 5 images from that almost total lunar eclipse were taken over a period of about 1.5 hours. The series is aligned to trace part of the cross-section’s circular arc, with the central image at maximum eclipse. It shows a bright, thin sliver of the lunar disk still beyond the shadow’s curved edge. Of course, even within the…

近乎月全食

近乎月全食

ByNASA中文

2021年11月20日 An Almost Total Lunar Eclipse Image Credit & Copyright: Robert Fedez Explanation: Predawn hours of November 19 found the Moon in partly cloudy skies over Cancun, Mexico. Captured in this telephoto snapshot, the lunar disk is not quite entirely immersed in Earth’s dark umbral shadow during a long partial lunar eclipse. The partial eclipse was deep though, deep enough to show the dimmed but reddened light in Earth’s shadow. That’s a sight often anticipated by fans of total lunar eclipses. Wandering through the constellation Taurus, the eclipsed Moon’s dimmer light also made it easier to spot the Pleiades star cluster. The stars of the Seven Sisters share this frame at the upper right, with the almost totally eclipsed Moon. Notable APOD Submissions (so far):…

满月

满月

ByNASA中文

2021年11月18日 Full Moonlight Image Credit & Copyright: Zhengjie Wu and Jeff Dai (TWAN) Explanation: A photographer in silhouette stands in bright moonlight as the Full Moon rises in this well-planned telephoto image. Of course, the Full Moon is normally the brightest lunar phase. But on November 18/19, the Full Moon’s light will be dimmed during a deep partial lunar eclipse seen across much of planet Earth. At maximum eclipse only a few percent of the lunar disk’s diameter should remain outside the Earth’s dark umbral shadow when the Moon slides close to the shadow’s southern edge. Near apogee, the farthest point in its orbit, the Moon’s motion will be slow. That should make this second lunar eclipse of 2021 an exceptionally long partial lunar eclipse….