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T O P I C R E V I E WRobert PearlmanThese are composites of a series of images photographed from a mounted camera on the International Space Station, from approximately 240 miles above Earth. Expedition 31 flight engineer Don Pettit shared the 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.A total of 18 images photographed by the astronaut-monitored stationary camera were combined to create this composite: A total of 46 images photographed by the astronaut-monitored stationary camera in the Cupola were combined to create this composite:A total of 47 images photographed by the astronaut-monitored stationary camera were combined to create this composite: Jurg BolliThese are fascinating. But I prefer regular images that show us what it looks like up there.mikepfIt looks like they've engaged the warp drive.RocketmanRobThis reminds me of some fantastic video footage that Ron Garan showed at a recent gathering at the Cradle of Aviation museum. It showed time lapsed video of the Earth from ISS to the theme of the most recent Star Trek movie. Worth a look if you can find it. Unfortunately, I haven't been able to find it.328KFHere's a link to that video.RocketmanRobThat's it. Thanks for the link!
Expedition 31 flight engineer Don Pettit shared the 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.A total of 18 images photographed by the astronaut-monitored stationary camera were combined to create this composite: A total of 46 images photographed by the astronaut-monitored stationary camera in the Cupola were combined to create this composite:A total of 47 images photographed by the astronaut-monitored stationary camera were combined to create this composite:
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.
A total of 18 images photographed by the astronaut-monitored stationary camera were combined to create this composite:
A total of 46 images photographed by the astronaut-monitored stationary camera in the Cupola were combined to create this composite:
A total of 47 images photographed by the astronaut-monitored stationary camera were combined to create this composite:
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