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Star trail photography on salt lake in Lut desert in Iran. A star trail is a type of photograph that uses long exposure times to capture diurnal circles, the apparent motion of stars in the night sky due to Earth's rotation. A star-trail photograph shows individual stars as streaks across the image, with longer exposures yielding longer arcs.
A star-trail photograph shows individual stars as streaks across the image, with longer exposures yielding longer arcs. Star trails over the ESO 3.6 m Telescope [ 2 ] A star trail photograph showing the apparent motion of stars around the north celestial pole ; Polaris is the bright star near the pole, just above the jet trail.
The first photograph of a star other than the Sun was a daguerreotype of the star Vega by astronomer William Cranch Bond and daguerreotype photographer and experimenter John Adams Whipple, on July 16 and 17, 1850 with Harvard College Observatory's 15 inch Great refractor. [8]
Night photography (also called nighttime photography) is the capturing of images outdoors between dusk and dawn. Night photographers generally have a choice between using artificial lighting and using a long exposure , exposing the shot for seconds, minutes, or hours in order to capture enough light to record an image.
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Circumpolar star trails in a long-exposure photo of several hours. The stars near the celestial pole leave shorter trails with the long exposure. A circumpolar star is a star that, as viewed from a given latitude on Earth, never sets below the horizon due to its apparent proximity to one of the celestial poles.
Polaris (within 1° of the pole) is the nearly stationary bright star just to the right of center in this star trail photo. The north celestial pole currently is within one degree of the bright star Polaris (named from the Latin stella polaris, meaning "pole star").
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