Sun Pictures: A Full Year in a Single Frame
source: http://news.nationalgeographic.com/news/2010/12/photogalleries/101228-sun-end-year-analemmas...
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Analemma photographs are made by taking a picture of the sun from the same place at the same time of day once or twice a week, generating 30 to 50 frames. This picture, made in Veszprem, Hungary, combines 36 photos of the sun taken at 10 a.m. local time between January and December. A separate picture of the neighborhood taken from the same location but at a different time of day was digitally composited into the foreground.
The sun makes this shape over a year because Earth rotates on a slightly different axis than the sun, and our planet also travels on an elliptical orbit. As one hemisphere of Earth tilts farther from the sun, the arc of the sun's daily path seen from that location lowers toward the horizon. The sun's arc then gets higher in the sky as the tilt reverses. The sun's highest point in the sky, seen in this analemma, occurs during the summer solstice, while its lowest point is during winter solstice. (Find out about a lunar eclipse that happened on the 2010 winter solstice.)
Because of the time and precision involved, photographs of analemmas can be very difficult to produce. So far, only about 20 people worldwide have released successful analemma photos, according to Babak Tafreshi, founder of the astrophotography website The World at Night (TWAN).
http://news.nationalgeographic.com/news/2010/12/photogalleries/101228-sun-end-ye.../year-in-picture-analemma-sun-path-eclipse_30692_600x450.jpg
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- Art and Style, Upstream, Science, Weird Science, 3 more
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CarlosIsDown
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The sun is that small (visually, from here) without all those rays?
- 1 year ago
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CarlosIsDown
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pjacobs51
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and an analemma of the Moon
- 1 year ago
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pjacobs51
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thetrimsmith
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A yo, cahpoinacus. (sniff) Tell me my Zodiac ova hia.
- 1 year ago
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thetrimsmith
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remanns
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thetrimsmith:
heh +^d
- 1 year ago
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remanns
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remanns
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This goes in the pjacobs51 "best of". Making file now. +^d
- 1 year ago
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remanns
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adamvelvetu
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that's sweet to see. is there some significance to the fact that it forms a bowling pin? what is the sun trying to tell us...
- 1 year ago
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adamvelvetu
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pjacobs51
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The first analemma photograph ever made—created over New England in the U.S. between 1978 and 1979—stands as one of the few analemma pictures in the world that does not use a composited foreground. The shot includes 44 exposures of the sun and a picture of a house, all taken from the same location and all on a single frame of film.
In addition, during summer solstice, winter solstice, and one of the equinoxes, photographer Dennis di Cicco made long exposures with a solar filter, beginning each day at sunrise and ending at 8:30 a.m. ET. The resulting image shows part of the sun's arc during those three days.
"Most people say you have to be nuts to attempt a year-long exposure of the sun," di Cicco wrote on the TWAN astrophotography website. "Those who have succeeded will probably agree!"
- 1 year ago
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pjacobs51
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pjacobs51
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Loop Over Crosses
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pjacobs51
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pjacobs51
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Year of the Eclipse
- 1 year ago
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pjacobs51
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pjacobs51
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A Year at Delphi
- 1 year ago
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pjacobs51
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remanns
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pjacobs51:
It would be fun to have a print of that one. Very +^d .
- 1 year ago
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remanns
