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echo: bluewave
to: JAMES BRADLEY
from: JEAN PARROT
date: 2005-07-07 09:01:00
subject: Sphere !

Hello James, I wish you a nice day!

 JB> Now that *could* be handy. Today, I buy some astral nav CD from the
 JB> second hand store for two bucks. I didn't look for distance
 JB> conversion, but there is freeware to do that too.

        If you are interested, I could send you a CD from the
  London Observatory that is meant for astro navigation. In it is
  an app to get distance and heading from A to B. This is what the
  astro triangle does too but resolves it in degrees instead of
  miles. A conversion from one to the other is easy as a minute is
  one nautical mile. ( 60 to one degree ).

        A condensed triangle...if on the 21 June, you stand ot the
  north pole, at noon, the sun is on the horizon, it altitude is
  zero. This will increase as you move south to be 90ø when you
  get to the equator. Get it ?

 JB> The program you poured over, sounds like a NASA project, rather than a
 JB> newbie torture device. You were supplied enough to debug it as you
 JB> went? 

        I was luciky, I did not have to debug it at all. Ran good
   first try. All this in BASIC of course.

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