8 Jun 2012 amatus   » (Journeyer)

+Cory Schmitz eat your heart out

+ Cory Schmitz  eat your heart out

ISS Star Trails (26)
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.”





Syndicated 2012-06-08 20:58:13 from Plus Public Activity Feed for David Barksdale

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