computation of observer position in astro-navigation


Nautical ephemeris are included until 2030 with no relevant error for all navigational bodies, 56 stars, Sun, Moon and 4 major planets. The local meridian time can be computed directly from time UT: sextant altitude correction is computed automatically after inserting the value of height of eye with the correction tables of the Admiralty Nautical Almanac.

A plotting sheet reports the calculated position and bodies' position lines. An info window indicates the body's most important celestial parameters.

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