Setup -> Horizon
This controls how a local horizon profile is defined. Whether it is drawn is
determined by the Horizon toolbar button. If a
profile is on it will be drawn as a red line on the sky and objects that
fall below the profile are not drawn. Note that the rise and set times
reported elsewhere do not take into account this horizon.
- Use flat horizon This method sets a constant angle at which the
horizon profile is set for all azimuth angles. The altitude of the
profile is set using the field at right.
- Use above custom map This method lets you draw your profile
in the map area at the top. Hold the stylus down and draw or edit
the desired portion of the profile. The scale goes from 0 to 90 in
altitude and 0 to 360 in azimuth; azimuth is in degrees eastward from