Well,

   Since the apparent motion of the sun is constant, all the
photographer had to do was take a picture every X minuites.  He took 18
frames (counting the number of suns in the picture), and the eclipse in
San Fransiscio took T time.  All he had to do to find X is simple math: 
T/18 = X

   Calculating exposure must have been tough though . . . he had to
decide what the exposure should be, then divide it up so that all 18
exposures equalled the final exposure he needed.

IL Bill

smcforme wrote:
> 
>  I wonder what calculations the photographer used to get the nearly pefect spacing 
>of each exposure?
>   "Daniel J. Matyola" <[EMAIL PROTECTED]> wrote: There is a great photo of this 
>week's eclipse on today's Astonomy Picture of
> the Day:
> 
> http://antwrp.gsfc.nasa.gov/apod/astropix.html
> 
> --
> Daniel J. Matyola mailto:[EMAIL PROTECTED]
> Stanley, Powers & Matyola mailto:[EMAIL PROTECTED]
> Suite203, 1170 US Highway 22 East http://danmatyola.com
> Bridgewater, NJ 08807 (908)725-3322 fax: (908)707-0399
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