Featuring 20 of the principal bright stars and their constellations, this app revisits the mechanical planispheres traditionally used by navigators and astronomers for star identification and for tracing their diurnal and seasonal trajectories. * Find/recognize practise modes * Dial for adjusting the visibility of background stars, helps accommodate the level of light pollution in your area * (via in-app purchase) Extend to the 58 navigational stars listed in the Nautical Almanac, and 300