The dots forming a curved figure-8 pattern in the sky mark where the sun appeared every day at exactly 9 a.m. local time in the small town of Veszprem, Hungary.
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| More than 30 images were taken to make this composite photo of the sun's movement across the sky in 2011. The images shows what scientists call the analemma, the movement of the sun in the sky over the course of a year. The background image was also taken separately without a solar filter. CREDIT: Tamas Ladanyi / astrophoto.hu / twanight.org |
The photo was taken by skywatcher Tamas Ladanyi from a backyard in Veszprem. Ladanyi took 36 images of the sun throughout the year and then created a composite of the images to show the interesting pattern. This particular pattern is called an analemma.
The tilt of the Earth's axis and it's variation in speed when rotating around the sun causes the graceful figure-8 pattern.
In the analemma, the upper and lower extremes of the curve represent the summer and winter solstice dates. On the equinox dates, the sun is usually at the halfway point on this pattern between the solstices.
Editor's note: If you have an amazing skywatching photo you'd like to share for a possible story or image gallery, please contact managing editor Tariq Malik at tmalik@space.com.
Nina Sen, SPACE.com Contributor
Date: 18 January 2012
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