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ISS Star Trails

Posted by Jonathan

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.”

View full set on Flickr

8 Comments Leave A Comment

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Workout Planner says:

December 16, 2012 at 4:50 pm

Well done…again. Jonathan, What motivated you to call this blog “ISS Star Trails”, not that the title does not go with the content, I am just wondering. Congratulations again on a good job Jonathan.