4 ISS Passes in 1 Night
Taken by Alan Dyer on May 31, 2015 @
near Gleichen, Alberta
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Camera Used: Canon Canon EOS 6D
Exposure Time: 14/10
Aperture: Unavailable
ISO: 6400
Date Taken: 2015:06:01 22:43:21
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Details:
On the night of May 31/June 1 I was able to shoot the passage of the International Space Station on each of four successive orbits, at 90-minute intervals, from dusk to dawn. The first passage was low across the south at 11:06 am. Then at 12:46 and again at 2:21 a.m. the Space Station flew directly overhead. The final pass was at 3:55 am and again brought the ISS across the southern sky.
Seeing the Space Station on not one but two, three, or even four orbits in one night is possible at this time of year near northern summer solstice because the Station is now continuously lit by sunlight -- the Sun never sets from the altitude of the ISS. When the ISS should be entering night, sunlight streaming over the north pole still lights the Station at its altitude of 400 km.
To shoot the images I used 8mm and 15mm fish-eye lenses, and a 14mm ultra-wide lens. The bright moonlight made it possible to use short 2- to 4-second exposures, allowing me to record enough frames at each passage to make little movies of the ISS flying across the sky.
The movies can be viewed at https://vimeo.com/theamazingsky/spacestation
I used the Advanced Stacker Actions from StarCircleAcademy.com to create the trail effect and the composite still images, showing the flight path of the ISS across the sky.
Photographer's website:
http://www.amazingsky.net
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