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'Stacked' Space Station Photos Highlight Star Trails

oxide7 (1013325) writes | more than 2 years ago

Space 0

oxide7 (1013325) writes "A scientist aboard the International Space Station took extraordinary photos of the start scape from aboard the vessel, using a special technique that highlights their movement.

"Modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image," Pettit explained.

"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.”"

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