月光下的冰晕

月光下的冰晕

ByNASA中文

2022年5月14日 Ice Halos by Moonlight Image Credit & Copyright: Alan Dyer, Amazingsky.com, TWAN Explanation: An almost full moon on April 15 brought these luminous apparitions to a northern spring night over Alberta Canada. On that night, bright moonlight refracted and reflected by hexagonal ice crystals in high clouds created a complex of halos and arcs more commonly seen by sunlight in daytime skies. While the colors of the arcs and moondogs or paraselenae were just visible to the unaided eye, a blend of exposures ranging from 30 seconds to 1/20 second was used to render this moonlit wide-angle skyscape. The Big Dipper at the top of the frame sits just above a smiling and rainbow-hued circumzenithal arc. With Arcturus left and Regulus toward the right…

直接投影：手边的月亮

直接投影：手边的月亮

ByNASA中文

2022年2月28日 Direct Projection: The Moon in My Hands Image Credit & Copyright: Jeff Graphy Explanation: You don’t have to look through a telescope to know where it’s pointing. Allowing the telescope to project its image onto a large surface can be useful because it dilutes the intense brightness of very bright sources. Such dilution is useful for looking at the Sun, for example during a solar eclipse. In the featured single-exposure image, though, it is a too-bright full moon that is projected. This February full moon occurred two weeks ago and is called the Snow Moon by some northern cultures. The projecting instrument is the main 62-centimeter telescope at the Saint-Véran Observatory high in the French Alps. Seeing a full moon directly is easier because…

满月与舞动的掠鸟群

满月与舞动的掠鸟群

ByNASA中文

2022年1月22日 The Full Moon and the Dancer Image Credit & Copyright: Elena Pinna Explanation: On Monday, January’s Full Moon rose as the Sun set. Spotted near the eastern horizon, its warm hues are seen in this photo taken near Cagliari, capital city of the Italian island of Sardinia. Of course the familiar patterns of light and dark across the Moon’s nearside are created by bright rugged highlands and dark smooth lunar maria. Traditionally the patterns are seen as pareidolia, giving the visual illusion of a human face like the Man in the Moon, or familiar animal like the Moon rabbit. But for a moment the swarming murmuration, also known as a flock of starlings, frozen in the snapshot’s field of view lends another pareidolic element…

2021年的满月

2021年的满月

ByNASA中文

2022年1月1日 The Full Moon of 2021 Image Credit & Copyright: Soumyadeep Mukherjee Explanation: Every Full Moon of 2021 shines in this year-spanning astrophoto project, a composite portrait of the familiar lunar nearside at each brightest lunar phase. Arranged by moonth, the year progresses in stripes beginning at the top. Taken with the same camera and lens the stripes are from Full Moon images all combined at the same pixel scale. The stripes still looked mismatched, but they show that the Full Moon’s angular size changes throughout the year depending on its distance from Kolkata, India, planet Earth. The calendar month, a full moon name, distance in kilometers, and angular size is indicated for each stripe. Angular size is given in minutes of arc corresponding to…

月光中的彩云

月光中的彩云

ByNASA中文

2021年12月04日 Iridescent by Moonlight Image Credit & Copyright: Marcella Giulia Pace Explanation: In this snapshot from November 18, the Full Moon was not far from Earth’s shadow. In skies over Sicily the brightest lunar phase was eclipsed by passing clouds though. The full moonlight was dimmed and momentarily diffracted by small but similar sized water droplets near the edges of the high thin clouds. The resulting iridescence shines with colors like a lunar corona. On that night, the Full Moon was also seen close to the Pleiades star cluster appearing at the lower left of the iridescent cloud bank. The stars of the Seven Sisters were soon to share the sky with a darker, reddened lunar disk. Tomorrow’s picture: eclipse plane 月光中的彩云 影像提供与版权: Marcella Giulia…

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….

满月与剪影

满月与剪影

ByNASA中文

2021年10月10日 Full Moon Silhouettes Video Credit & Copyright: Mark Gee; Music: Tenderness (Dan Phillipson) Explanation: Have you ever watched the Moon rise? The slow rise of a nearly full moon over a clear horizon can be an impressive sight. One impressive moonrise was imaged in early 2013 over Mount Victoria Lookout in Wellington, New Zealand. With detailed planning, an industrious astrophotographer placed a camera about two kilometers away and pointed it across the lookout to where the Moon would surely soon be making its nightly debut. The featured single shot sequence is unedited and shown in real time — it is not a time lapse. People on Mount Victoria Lookout can be seen in silhouette themselves admiring the dawn of Earth’s largest satellite. Seeing a…

获月的迹线

获月的迹线

ByNASA中文

2021年9月23日 Harvest Moon Trail Image Credit & Copyright: Mike Cohea Explanation: Famed in festival, story, and song the best known full moon is the Harvest Moon. For northern hemisphere dwellers that’s a traditional name of the full moon nearest the September equinox. Seen from Saunderstown, Rhode Island, planet Earth, this Harvest Moon left a broad streak of warm hues as it rose through a twilight sky over the Newport Bridge. On September 20 its trail was captured in a single 22 minute exposure using a dense filter and a digital camera. Only two days later the September equinox marked a change of season and the beginning of autumn in the north. In fact, recognizing a season as the time between solstice and equinox, this Harvest…

色泽经过夸大的蓝月

色泽经过夸大的蓝月

ByNASA中文

2021年8月31日 A Blue Moon in Exaggerated Colors Image Credit & Copyright: Robert Fedez Explanation: The Moon is normally seen in subtle shades of grey or gold. But small, measurable color differences have been greatly exaggerated to make this telescopic, multicolored, moonscape captured during the Moon’s full phase. The different colors are recognized to correspond to real differences in the chemical makeup of the lunar surface. Blue hues reveal titanium rich areas while orange and purple colors show regions relatively poor in titanium and iron. The familiar Sea of Tranquility, or Mare Tranquillitatis, is the blue area toward the upper right. White lines radiate across the orange-hued southern lunar highlands from 85-kilometer wide ray-crater Tycho at bottom right. The full moon that occurred earlier this month…

蓝色时段的满月

蓝色时段的满月

ByNASA中文

2021年8月26日 A Blue Hour Full Moon Image Credit & Copyright: Giorgia Hofer Explanation: Nature photographers and other fans of planet Earth always look forward to the blue hour. That’s the transition in twilight, just before sunrise or after sunset, when the Sun is below the horizon but land and sky are still suffused with a beautiful blue light. After sunset on August 21, this blue hour snapshot captured the nearly full Moon as it rose opposite the Sun, above the rugged Italian Alps from Cortina d’Ampezzo, Italy. Sharing bluish hues with the sky, the rocky pyramid of Monte Antelao, also known as the King of the Dolomites, is the region’s prominent alpine peak. The moonlight is yellow, but even so this full Moon was known…