Posted on 06/05/2025 2:02:50 PM PDT by MtnClimber
Explanation: Savudrija lighthouse shines along the coast near the northern end of the Istrian peninsula in this well-composed night skyscape. A navigational aid for sailors on the Adriatic Sea, the historic lighthouse was constructed in the early 19th century. But Polaris, an even older aid to navigation, shines in the sky above. Alpha star of the constellation Ursa Minor, Polaris is also known as the North Star. In this scene Polaris forms the shortest bright arc near the North Celestial Pole, the extension of Earth's axis of rotation into space. Of course, the North Celestial Pole lies exactly at the center of all the concentric star trails. The composite image is a digital stack of 400 exposures, each 30 seconds long, taken with camera and tripod fixed to a rotating planet.
For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.
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bttt
I always like star trail pics. They are so cool.
” The composite image is a digital stack of 400 exposures, “
Just me, but this drives me a bit crazy. All these mega-processed images.
I want to go out and see stuff.
It has been said that the peoples of the Northern Hemisphere developed more quickly than the peoples of the Southern Hemisphere merely due to the fact that they had such an easy navigational guide as Polaris. A guiding star by land or by sea.
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