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Wow! Thanks for sharing, +Don Petit!
 
Now thats a star trail photo I can only dream of taking! Awesome!
 
what are the blue-ish white blobs on lower portion of the screen?
Are they clouds, or scratches on the window, or storms or cities or what?
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Derik I assume they are lightning. 
 
+Kyle Sullivan The shutter speed was 30 seconds (in manual mode). +Derik Perry The bluish white bobs are lightenings, seen from space. You actually see the reflection of the individual stroke in the thunderstorm clouds, which makes them appear as blobs. City lights normally are less brilliant, of yellow, orange, slightly greenish, or white colour; rarely of that white bluish, which colour is an indication of the intensity of the source.
 
I suppose the greenish bright line of line is the edge of the atmosphere? What about the yellow/orange portion above it?
 
Stunning. Simply stunning. Thank you!
 
Time lapse photography in space... Now I've seen everything there is to see.
 
I don't understand how it is possible to take a time lapse in space with the craft on the move. The awesome lightning flashes would be blurred. Maybe a composite of two shots here? Hmm - or immediately after opening the shutter they blanked out the earth with a circular object? The last would explain why the start trails bleed into the earth disk...
It is still awesome, no matter how it was done!
 
+Steve Wilde try it some time with a flash. Take a 1 minute exposure have a subject move into the frame and hit them with a flash, then have them walk away. You will have the subject frozen and unblurred. Since the lightning lasts only a fraction of a second (stars are always on) you have no blur.
 
Great photo Don ! I have seen a lot of space photos but I believe that's the first one with star arcs that long. 25 degrees or so? Also neat how the lightning is frozen like strobe flashes. Amazing!
 
Our Atmospheric blanket looks so thread bare, can we really afford to have all these open flames burning on the Earth? Everyone has a fire, and some folks have a larger fire than others for sure. 7 billion fires burning and the Atmosphere so thin.
 
+Don Denesiuk It is a first. These new digital cameras, Nikon D3S, enable shots that had not been possible before, so they had not even been tried. Now, the results are amazing. +Don Pettit is using the camera to the full, even making shots in infrared from space.
 
Of course, +Ray Escamilla. I didn't see the effect there. The planet could be completely blurred from rotation (and se can't see it well enough to know), but the flashes would not be. Good call.
 
I read the article about these photos on the NASA website, and how the shots are taken at 30sec exposures and stacked in software.

I don't know if Nikons have this, but on my Canon 20D there is a setting to enable noise reduction. It takes a blank shot to capture the noise, then removes it from the shot. I've only tried it for shots around a few minutes so I don't know how well it'd work for 10 to 15 minute exposures. How ever since stacking the images works, might as well stick with that. :)

By the way, love the photo. I'm always impressed by the photos that come down from ISS!