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Bryan Murahashi | all galleries >> Galleries >> Photo a Day > Iridium Flare and Star Trails
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Iridium Flare and Star Trails

This picture was taken a couple of nights ago.

Was trying to photograph an Iridium flare near the North Star. Since it was near the North Star
I decided to make some star trails as well.

Iridium is a constellation of about 66 low earth satellites. They were to provide telephone
service all around the world. But the high cost of making a phone call and the enormous portable phones led to its doom.
The flare is the reflection of the suns rays off the antennaes on the satellite and is highly
predictable.
See the following website for these preditions http://www.heavens-above.com/

Can you find the flare?

Mounted the D7o w/kit lens on tripod and pointed it roughly at the
north star.

Just started taking 30sec, fully open aperture, with remote shutter
and took about 19 shots including the flare. ISO 800

Stacked all frames with Tawbaware's ImageStacker s/w.
Equivalent to a 15 minute exposure.

Nikon D70 ,Nikkor 18-70mm f/3.5-4.5G ED-IF AF-S DX Zoom
19 stacked shots. 30 sec, f/3.5, iso 800, tripod full exif

other sizes: small medium original auto
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Ann Cleeves23-May-2008 23:30
Brilliant!
Guest 21-Mar-2005 22:03
wow.
stunning execution Bryan.
bravo
Andrea
Anna Yu11-Mar-2005 18:44
Fascinating, your night sky shots Bryan.
Diane Wu11-Mar-2005 05:04
Terrific!!!! :)
Guest 10-Mar-2005 22:21
Fascinating. Nice to have the "straight" flare contrasting with the earth's rotation on the start trails. Nice to have the technical details too.
Guest 10-Mar-2005 21:05
Wow, these are great!!
Guest 10-Mar-2005 14:16
i love your night sky shots bryan!
Guest 10-Mar-2005 06:58
WOW that is soo good!