Re: Photographing Iridium Flares - Addendum

From: Jim Nix (nixj@bellsouth.net)
Date: Sat Mar 24 2001 - 14:08:53 PST

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    Hi,
    
        Anthony, I've had good success with 400 ASA although I think 800 ASA is better, and a 35 or 75 mm lens.  I
    note many have had good success with the 50mm lens.  I've observed only one daytime flare, and have
    photographed one twilight flare.  Make sure you've got a good timepiece
    and of course have control over the lens, my exposures have run from 15 secs to 45 secs.  F stops
    2 to 4.  If you check some of my pics at sat-tracks.com they have notes on lens, film speed and
    f stops.
    
    Good luck
    
    Jim Nix
    MAG
    
    Anthony Ayiomamitis wrote:
    
    > Greetings (again),
    >
    >       I trust this time around I will have a complete message (:-)) ....
    > the reference to the 300 mm lens should be that it is a telephoto and
    > not a wide angle.
    >
    >       Also, my daytime opportunity is due to Iridium 36 and at 19:23
    > local time  and an altitude of 60 degrees (I will be 2.2 km from the
    > flare center). If a telescope is required during photography (such as
    > tracking, if necessary), I would prefer not to drive to the flare center
    > due to logistical reasons (14" SCT with G11 Losmandy mount). Anyway, the
    > intensity at the flare center is marginally higher at -8.1.
    >
    >       My three night time opportunities will be with Iridium 60, 12 and
    > 16 and I will be 66.4, 9.1 and 28.8 km from the falre centers and
    > occuring at 05:26 (alt 11 deg) , 21:02 (alt 55 deg) and 20:56 (alt 55
    > deg), respectively.
    >
    > Anthony.
    >
    > 38.3000 N, 23.7500 E (GMT+2)
    >
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