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 The others pictures of "Iridium Flashes"
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Double daylight Iridium flashes
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1024 x 768 pixels (62 ko)

 1024 x 768 pixels (62 kB)
One minute later, the second Iridium flash appear. Iridium 51 reach the magnitude -5.5, but I snap with a little delay, whence its smaller brightness, estimated between -2 and -4.
I have composited the two photos for this picture. As I have re-frame between the two photos, this is only an estimation of the relative position. I've composited them with the previsions given by Calsky. The composite allow to compare the brightness of the two flashes.
Seen 9952 times See the next picture of that series.
Instrument   26 mm focal length, composite of 2 pictures
Exposure & film   1/3 s with digital camera Canon 350D + Sigma 18-50 1:2.8
Date & place   March 8, 2007, Quimper

 The others pictures of "Iridium Flashes"
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |

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