reply to post by Phage
Using the video from Tromso is problematic. It's possible that your bearing from Tromso is not quite accurate. From your Part 1 post you have
obtained only 1 data point for the bearing (the Arctic Cathedral). Unlike Skjervoy, we don't really know where the camera is located except that it
is generally to the west of the cathedral. Because the camera is relatively close to the cathedral a difference in camera location of only 100-200
meters would make enough of a difference in the bearing to place the spiral at the end of the track you have established rather than the middle.
This totally irrelevant.
Tauresticus estimated the direction of the spiral from Tromso, pretty accuratelly from GE, together with the established views from the other sites,
and the map with the crossing lines of sight he was able to ACCURATELY establish the bearing from Tromso for Spiral fase 1.
He used other pics to establish the bearings for other fases of the spiral, and only used the Tromso footage again for providing the amount of time
between certain fases.
The Tromso bearing's accuracy is irrelevant in this case, cause he used it only to pinpoint the Spiral fase 1, while his speed calculations were
derived from Spiral fase 2 onwards.
So the possible inacurracy of his Tromso bearing, has no effect on his speed calculation, since it was completely derived from the other locations'
pics.
At least that's my understanding, correct me if I'm wrong.
[edit on 9-2-2010 by Point of No Return]