ASTRONOMICAL-CELESTIAL NAVIGATION

[PedroLeiva]

Reference: HP67/97 NAV PAC I
A practical program for position location of a vessel in the sea will be to get LAT and LONG observing the sun or moon having the following data: sextant angle, date&hour, star constants, etc.
Does somebody has experience in this issue to explain me the steps to follow to get this information? In NAV PAC I there are many programs, but I do not know how to apply them. Or better jet, does somebody have (or know about) a program for HP67 to make this calculations.

It is important to remember that in 15th century navigators used this system with success, but today pocket calculators takes care of solving the formulas, a time consuming process.

Any information will be welcome. Pedro