International Space Station Star Trails
Expedition 31 Flight Engineer Don Pettit relayed some information about photographic techniques used to achieve the images: “My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.”
Star trails andEarth light trails!
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Writer/Visual """artist""", former SCAD student, current University of Alabama student. Science enthusiast. This blog was supposed to be mostly sketches, but somehow turned into an aggregate of the best things I find on my dash. Trigger warning for space, nature, art, and various fandoms. (A science and art appreciation blog, mostly.)