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Image ID: zodiacal.light.IMG_2021.b-900.jpg
TITLE=Zodiacal Light, Saguaro National Park, Arizona
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The Zodiacal Light, from Saguaro National Park, Arizona. Each spring in the northern hemisphere, the ecliptic rises almost perpendicular to the horizon in the west from mid-northern latitudes after the sun sets. Dust in our Solar System along the plane where the planets rotate around the sun (the ecliptic) scatters sunlight. After sunset we can see that scattered light, known as the Zodiacal light. In this image the Zodiacal light rises between the cacti in the west. At upper center is the Pleiades star cluster.
Technical. Canon 5D Mark II 21 megapixel camera with 20mm, f/2.8 lens at f/2.8, 30 second exposure at ISO 400. The cacti were illuminated by an LED flashlight. Taken at 7:46 pm on March 14.
Keywords to this image = arizona astrophoto-1 startrails night low-light desert cactus Saguaro_NP
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Last updated May 13, 2012