gribbly.org* is the online home of Cameron Brown. Creative director, designer, musician, mediocre programmer, caffeine addict. Seattle
This is where I accumulate interesting links... If you're looking for coherence or context, you're in the wrong place!
ISS Star Trails
ISS Star Trails - a set on Flickr: “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.”