Folks,
My apologies to the group for inadvertently including a complete mail digest
with my earlier message. Excitement got the better of me!
Anthony.
Anthony Ayiomamitis wrote:
> Greetings,
>
> I would appreciate input on photographing Iridium flares which are
> visible during the day and night. I have a daytime opportunity on Mar
> 26/01 (magnitude -8.0!) and would like to capture it on film. My camera
> is currently loaded with ASA 400 Fuji print film. I would like to know
> the focal length of the lens I should be using (I have Canon FD lenses
> ranging from 24 mm wide angle to 300 mm wide angle) as well as the
> length of exposure.
>
> In addition, will telescope tracking be required to offset field
> rotation or will the satellite be stationary? Of course, if tracking is
> necessary, this cannot be done prior to the flare (since it is during
> daylight hours) and will have to be looked after the previous night.
>
> I would also appreciate feedback on photographing flares during the
> night and, more specifically, the type of exposures I should be looking
> at. I have three such flares in my region during the next 48 hours
> ranging in magnitude from -1 to -5.
>
> As a final comment, can I assume that the length of exposure will
> be a function of magnitude? If so, I would love to see some feedback on
> exposure times (daylight and night time) as a function of magnitude.
>
> Many thanks in advance for any input and assistance. If things do
> pan out, I promise to inform everyone with links to photos.
>
> Anthony.
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