Celestial Navigation Assistant

计算地平线，景观日志和拦截情节

Sight reduction functionality for the navigational stars; extendable to the sun, moon, and planets as an in-app upgrade.

Use the computed horizon view for true bearings and for identification of the stars and planets. Enter measured altitudes using the sight log feature. Lines of position (intercept method) are shown on a pan/zoom grid centred on Assumed Position.