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@@ -125,6 +125,14 @@ not shown by default, but you can enable the display of hidden objects using
the Option->Show Hidden menu entry. Hidden objects and hidden GPS way points
are displayed in blue.
+Refraction
+==========
+
+Refraction caused by temperature and density gardients in the atmosphere is
+taken into account according to the approximation described by Tom Chester in:
+http://tchester.org/sgm/analysis/peaks/refraction_calculation.html
+under the assumption of a temperature change of 6.5°C per 1000m and a
+temperature T0 at view point level of 10°C.
Stitching
=========