Navigazione Astronomica
Navigazione Astronomica Summary
Navigazione Astronomica is a mobile Android app in Education by Sergio Guaita. Released in Jan 2023 (3 years ago). Store metadata: updated Sep 28, 2025.
Store info: Last updated on Google Play on Sep 28, 2025 .
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App Description
Video and interactive graph to determine Latitude, Longitude, Point of Ship.
This app demonstrates in a simple way how to determine Latitude, Longitude, Ship Point, simply using Sun, Sextant and Height Lines.
- Celestial sphere and terrestrial sphere, illustrated with all the components useful for understanding astronomical navigation, description and operating principle of the sextant.
- Variation of the declination of the Sun over the course of the year with interactive graph to identify the variation of the LHA (Local Hour Angle) as a function of the GHA (Greenwich Hour Angle).
- 3 concrete examples to determine Latitude, Longitude and Height lines explained through 3 animations on different nautical charts showing the various uses of the height lines.
- 2 downloadable neutral calculation grids, to be used for practical exercises.
Ephemeris and H.O. tables 249 used in all the examples given in the text.