NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Beginner
From: Geoffrey Kolbe
Date: 2005 Sep 10, 22:08 +0100
From: Geoffrey Kolbe
Date: 2005 Sep 10, 22:08 +0100
At 18:13 10/09/2005, Willem Piccer wrote: >I was just re-reading the discussion on the problems Asbjorn had and I >wonder if the whole problem is not caused by the gps position used. >Especially because he states that the observation height is always less >than the calculated height. >I have the feeling that the chart datum chosen plays a role > >Willem Piccer The latitude and longitude which Asbjorn's GPS deduces for Trondheim (where Asbjorn says he took the sights) agree with that given in various atlas's and gazetteers that I have to less than a minute. A glance at the atlas shows that a position five miles North and East of Trondheim (where Asbjorn would have to be to get an observed altitude 5 minutes less than calculated) would put him in Trondheims Fjord....! Asbjorn would appear to be where he thinks he is. Geoffrey Kolbe
