Frank Reed <f-reed@metabien.com> ... >choose three points along its path and calculate the center of the = spherical >circle through these three points. Align the polar axis of your = telescope to >the center of this circle, and the declination settings for the = satellite at >these three points will be equal for the three chosen points. The = declination >setting will vary somewhat at other points, but only a fraction of a = degree ... This is the technique used in the short version of the pole.bas program = I have. The long version does least square fit to (three or) more prediction = points.