AstroCalc

If you`re looking for a tutorial giving a painless introduction to the ancient art of navigating by the sun, Moon or stars, then look no further. If you`re an experienced navigator, wanting a program that offers long term Precision Ephemeris, sight reduction, the utmost Simplicity and one that`s intuitive to use, then AstroCalc is written with you in mind. Its mathematical routines have has been developed over 15 years and have been well proven by many circumnavigators and long distance cruising sailors. However, a main feature is its apparent lack of features, or rather, a lack of Complex options. AstroCalc will not tax your computer skills which need to be no greater than you`ve already used to display this pages.