Re: [photo-3d] aurora warning

[Bob Wier <wier@xxxxxxxxxxxxxxxxx>]

>     What kind of stereo base would you need to actually shoot
>     an aurora in 3D?  Unless you are capturing foreground 
>     objects in the image, I'd think it would have to be *miles*
>     to see any depth in just the aurora itself.
>
>     Also, anybody have exposure recommendations?
>

This was discussed awhile ago with regard to the base required
to get a stereo image. I forget the outcome, but if you assume
the aurora occurs at an altitude of 30 - 50 miles then it would
require *miles* of stereo base. The major problem was how to
synchronize the cameras, and make sure they were pointing towards
the same area of sky (or at least the same area of aurora).

The first shøckwave reached earth about 9 hours ago (I'm typing
this at noon, Mountain), and showed a dramatic jump in proton 
energies. We shall see what happens tonight.

Note that the photo-3d archives prior to egroups are still
searchable at:

http://www.calcite.rocky.edu/photo-3d/

maybe with keyword(s) of aurora and exposure?

--BW

              Bob Wier
     mailto:wier@xxxxxxxxxxxxxxxxx
   19:12 Thursday, June 8, 2000
        Unix/Internet Administrator
   Rocky Mountain College, Billings MT.



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