> 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

So 1 arc second is about 510m, I'll leave the conversion to feet to
the Americans on this list...

  Andras

===========================================================================
Major Andras
    e-mail: [EMAIL PROTECTED]
    www:    http://andras.webhop.org/
===========================================================================

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