To all the FG scenery authors :

I came across a DEM data source which was created by a Scottsman called 
Jonathan de Ferranti.   http://www.viewfinderpanoramas.org

What he does in a nutshell is fix all the SRTM voids in mountaneous areas so 
that the data for the peaks is valid.
His work ranges from the Andes to the Himalayas to the Alps to Scandanavia.
3 arc-second coverage : 
http://www.viewfinderpanoramas.org/coverage%20map%20viewfinderpanoramas_org3.htm

He does not use a crappy interpolation technique like so many other authors or 
void filling applications do but uses various line tracing algorithms and 
alternative topographic mapping sources.
http://www.viewfinderpanoramas.org/%5Cvoidfill.html

I'm using his 1 arc second (22 meter) DEMs for the Alps in the Silent Wings 
soaring simulator and I can tell you it makes a *huge* difference!
Mountain peaks like the Matterhorn that are missing in SRTM3 are now visible 
using his DEM data.

He has no problem letting people use his data for flight simulators as long as 
you let him know and preferably give him some credit.

Regards
Paul


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