From: "Major A" <[EMAIL PROTECTED]>
>
> > Sorry for the lame question, but how far are the sample points apart
from
> > each other in feet with the 3 arc second data?  How far is it for the 1?
>
> 24 arc hours = 44000km (roughly the perimeter of the earth)
> 1 arc hour = 1833km
> 1 arc minute = 30.55km
> 1 arc second = 0.51km

Hmmm, are you sure ?

from my understanding :

360 degres = 44000km
1 degre = 122.22km
1 minute = 2.037km
1 second = 0.033km

-Fred



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