Astro navigation Vagnon

Although today's electronic devices are highly reliable, it is still essential (and sometimes compulsory) to know the techniques of positioning using a sextant, a watch, a calculator and ephemerides. This handbook explains the principle of the height line, which bases navigation on observation of the Sun, planets and stars. The observations and calculations are recorded on materials specially designed by the author for use with the sextant during the teaching apprenticeship.