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Re: Cosmic Challenge


  • From: E R Swanson <ers@xxxxxxxxxxxxxxxxxxxx>
  • Subject: Re: Cosmic Challenge
  • Date: Mon, 19 Oct 1998 08:58:18 -0700 (PDT)

You know, this could actually work. If you set up one person in the field
with a camera (set your axies on the stars) use cell phone and kept a line
open, you could use an electronic trigger to fire the second camera (if
you have an electronic shutter). I have a kit I build years ago that is
designed to fire a strobe with IR, visible light, or sound, with any
amount of delay you want to set it for. With a little concentrated effort
and ingenuity, no reason why you couldn't take shots with the same
meteors in the pic streaking down. I doubt you'd have to bother correcting
for elevation... --Elliott

On Mon, 19 Oct 1998, Tom Deering wrote:

> >I'm sure you have all heard about this year's (Nov. 16-17) Leonid meteor
> >shower possibly being a really big show (where have I heard that?) with
> >up to 50,000 meteors per hour being visible under optimum conditions
> >between midnight and dawn. Now, the $64,000 dollar question (I'm dating
> >myself here), how much of a stereo base would it take to get separation
> >between the meteors at, say, 25 to 50 miles distance and the stars at,
> >well, infinity. Maybe Joel and I could coordinate some time exposures
> >for a little hyper.
> 
> Using a spreadsheet I call "MAOFD for Dummies", I made these assumptions:
> 
> Near Point: 25 miles (1584000 inches)
> Far Point: 1.5 * 10^196 miles (WAG)
> Focal Length: 80mm
> OFD: 2.7mm
> 
> That gives me a camera separation of 52,800 inches, or 8/10ths of a mile.
> That assumes my far distance WAG is anywhere near accurate.
> 
> Will you use a slide bar, or twin cameras?  :^)
> 
> I certainly may have made an error.  Maybe there's someone else on the list
> who is more familar with the Bercovitz forumula?  :^)
> 
>