Close Double Iridium Flare thru Clouds
Taken by Shiraishi on May 18, 2015 @
Kumagaya-shi, Saitama, Japan
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
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Details:
Double Iridium flare with -5.5 mag brightness with 14 sec interval.
Iridium 6 followed by Iridium 51 flared consequently.
Realtime movie was taken and converted to an animated GIF.
It was slightly cloudy, and it was hard to see stars. However, the bright flares were visibile through the clouds even by naked eyes.
CalSky prediction:
Iridium 6 flare: May 18, 2015 1:56:31 UTC+9 -5.5 mag
Iridium 51 flare: May 18, 2015 1:56:44 UTC+9 -5.5 mag, but uncertain because it is a spare satellite, actually slightly darker.
Predicted time was almost correct.
Sony ILCE-7S digital camera; ISO 25600, F1.8, 1/30s, 24fps AVCHD movie, f=52mm
(Trimmed around flares. Horizontal angle is about 11 degrees.)
Photographer's website:
No URL provided.
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