I absolutely loooove these photographs. They where made by Flight Engineer at Expedition 31 from Nasa Don Pettit. Here's how he made them: “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." Don't you want to go to space right now, this minute? I know I do!
Love
Ines
